plotpy.histogram

The histogram module provides histogram related objects:

• plotpy.histogram.HistogramItem: an histogram plot item
• plotpy.histogram.ContrastAdjustment: the contrast adjustment panel
• plotpy.histogram.LevelsHistogram: a curve plotting widget used by the contrast adjustment panel to compute, manipulate and display the image levels histogram

HistogramItem objects are plot items (derived from QwtPlotItem) that may be displayed on a 2D plotting widget like plotpy.curve.CurvePlot or plotpy.image.ImagePlot.

Example

Simple histogram plotting example:

# -*- coding: utf-8 -*-
#
# Copyright © 2009-2010 CEA
# Pierre Raybaut
# Licensed under the terms of the CECILL License
# (see plotpy/__init__.py for details)

"""Histogram test"""

SHOW = True # Show test in GUI-based test launcher

from plotpy.plot import CurveDialog
from plotpy.builder import make

def test():
    """Test"""
    from numpy.random import normal
    data = normal(0, 1, (2000, ))
    win = CurveDialog(edit=False, toolbar=True, wintitle="Histogram test")
    plot = win.get_plot()
    plot.add_item(make.histogram(data))
    win.show()
    win.exec_()

if __name__ == "__main__":
    # Create QApplication
    import guidata
    _app = guidata.qapplication()
    
    test()

Reference

class plotpy.histogram.HistogramItem(curveparam=None, histparam=None)

A Qwt item representing histogram data

set_hist_source(src)

Set histogram source

source:

Object with method get_histogram, e.g. objects derived from plotpy.image.ImageItem

get_hist_source()

Return histogram source

source:

Object with method get_histogram, e.g. objects derived from plotpy.image.ImageItem

set_hist_data(data)

Set histogram data

set_logscale(state)

Sets whether we use a logarithm or linear scale for the histogram counts

get_logscale()

Returns the status of the scale

attach(plot)

Attach the item to a plot.

This method will attach a QwtPlotItem to the QwtPlot argument. It will first detach the QwtPlotItem from any plot from a previous call to attach (if necessary). If a None argument is passed, it will detach from any QwtPlot it was attached to.

Parameters:plot (qwt.plot.QwtPlot) – Plot widget

See also

detach()

baseline()

Returns:Value of the baseline

See also

setBaseline()

boundingRect()

Return the bounding rectangle of the data

brush()

Returns:Brush used to fill the area between lines and the baseline

See also

setBrush(), setBaseline(), baseline()

closePolyline(painter, xMap, yMap, polygon)

Complete a polygon to be a closed polygon including the area between the original polygon and the baseline.

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• polygon (QPolygonF) – Polygon to be completed

closestPoint(pos)

Find the closest curve point for a specific position

Parameters:pos (QPoint) – Position, where to look for the closest curve point Returns:tuple (index, dist)

dist is the distance between the position and the closest curve point. index is the index of the closest curve point, or -1 if none can be found ( f.e when the curve has no points ).

Note

closestPoint() implements a dumb algorithm, that iterates over all points

data()

Returns:the series data

dataRect()

Returns:Bounding rectangle of the series or an invalid rectangle, when no series is stored

See also

qwt.plot_series.QwtSeriesData.boundingRect()

dataSize()

Returns:Number of samples of the series

See also

setData(), qwt.plot_series.QwtSeriesData.size()

defaultIcon(brush, size)

Return a default icon from a brush

The default icon is a filled rectangle used in several derived classes as legendIcon().

Parameters:

• brush (QBrush) – Fill brush
• size (QSizeF) – Icon size

Returns:

A filled rectangle

deserialize(reader)

Deserialize object from HDF5 reader

detach()

Detach the item from a plot.

This method detaches a QwtPlotItem from any QwtPlot it has been associated with.

See also

attach()

directPaint(from_, to)

When observing a measurement while it is running, new points have to be added to an existing seriesItem. This method can be used to display them avoiding a complete redraw of the canvas.

Setting plot().canvas().setAttribute(Qt.WA_PaintOutsidePaintEvent, True) will result in faster painting, if the paint engine of the canvas widget supports this feature.

Parameters:

• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted

See also

drawSeries()

draw(painter, xMap, yMap, canvasRect)

Draw the complete series

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas

drawCurve(painter, style, xMap, yMap, canvasRect, from_, to)

Draw the line part (without symbols) of a curve interval.

Parameters:

• painter (QPainter) – Painter
• style (int) – curve style, see QwtPlotCurve.CurveStyle
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted. If to < 0 the curve will be painted to its last point.

See also

draw(), drawDots(), drawLines(), drawSteps(), drawSticks()

drawDots(painter, xMap, yMap, canvasRect, from_, to)

Draw dots

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted. If to < 0 the curve will be painted to its last point.

See also

draw(), drawSticks(), drawSteps(), drawLines()

drawLines(painter, xMap, yMap, canvasRect, from_, to)

Draw lines

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted. If to < 0 the curve will be painted to its last point.

See also

draw(), drawDots(), drawSteps(), drawSticks()

drawSeries(painter, xMap, yMap, canvasRect, from_, to)

Draw an interval of the curve

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted. If to < 0 the curve will be painted to its last point.

See also

drawCurve(), drawSymbols()

drawSteps(painter, xMap, yMap, canvasRect, from_, to)

Draw steps

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted. If to < 0 the curve will be painted to its last point.

See also

draw(), drawSticks(), drawDots(), drawLines()

drawSticks(painter, xMap, yMap, canvasRect, from_, to)

Draw sticks

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted. If to < 0 the curve will be painted to its last point.

See also

draw(), drawDots(), drawSteps(), drawLines()

drawSymbols(painter, symbol, xMap, yMap, canvasRect, from_, to)

Draw symbols

Parameters:

• painter (QPainter) – Painter
• symbol (qwt.symbol.QwtSymbol) – Curve symbol
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• from (int) – Index of the first point to be painted
• to (int) – Index of the last point to be painted. If to < 0 the curve will be painted to its last point.

See also

setSymbol(), drawSeries(), drawCurve()

fillCurve(painter, xMap, yMap, canvasRect, polygon)

Fill the area between the curve and the baseline with the curve brush

Parameters:

• painter (QPainter) – Painter
• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas
• polygon (QPolygonF) – Polygon - will be modified !

See also

setBrush(), setBaseline(), setStyle()

getCanvasMarginHint(xMap, yMap, canvasRect)

Calculate a hint for the canvas margin

When the QwtPlotItem::Margins flag is enabled the plot item indicates, that it needs some margins at the borders of the canvas. This is f.e. used by bar charts to reserve space for displaying the bars.

The margins are in target device coordinates ( pixels on screen )

Parameters:

• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.
• canvasRect (QRectF) – Contents rectangle of the canvas in painter coordinates

See also

QwtPlot.getCanvasMarginsHint(), QwtPlot.updateCanvasMargins(),

get_closest_coordinates(x, y)

Renvoie les coordonnées (x’,y’) du point le plus proche de (x,y) Méthode surchargée pour ErrorBarSignalCurve pour renvoyer les coordonnées des pointes des barres d’erreur

get_data()

Return curve data x, y (NumPy arrays)

hide()

Hide the item

hit_test(pos)

Calcul de la distance d’un point à une courbe renvoie (dist, handle, inside)

init()

Initialize internal members

isVisible()

Returns:True if visible

See also

setVisible(), show(), hide()

is_empty()

Return True if item data is empty

is_private()

Return True if object is private

is_readonly()

Return object readonly state

itemChanged()

Update the legend and call QwtPlot.autoRefresh() for the parent plot.

See also

QwtPlot.legendChanged(), QwtPlot.autoRefresh()

legendChanged()

Update the legend of the parent plot.

See also

QwtPlot.updateLegend(), itemChanged()

legendData()

Return all information, that is needed to represent the item on the legend

QwtLegendData is basically a list of QVariants that makes it possible to overload and reimplement legendData() to return almost any type of information, that is understood by the receiver that acts as the legend.

The default implementation returns one entry with the title() of the item and the legendIcon().

Returns:Data, that is needed to represent the item on the legend

See also

title(), legendIcon(), qwt.legend.QwtLegend

legendIcon(index, size)

Parameters:

• index (int) – Index of the legend entry (ignored as there is only one)
• size (QSizeF) – Icon size

Returns:

Icon representing the curve on the legend

See also

qwt.plot.QwtPlotItem.setLegendIconSize(), qwt.plot.QwtPlotItem.legendData()

legendIconSize()

Returns:Legend icon size

See also

setLegendIconSize(), legendIcon()

move_local_shape(old_pos, new_pos)

Translate the shape such that old_pos becomes new_pos in canvas coordinates

move_with_selection(delta_x, delta_y)

Translate the shape together with other selected items delta_x, delta_y: translation in plot coordinates

orientation()

Returns:Orientation of the plot item

See also

:py:meth`setOrientation()`

paintRect(xMap, yMap)

Calculate the bounding paint rectangle of 2 maps

Parameters:

• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.

Returns:

Bounding paint rectangle of the scale maps, not normalized

pen()

Returns:Pen used to draw the lines

See also

setPen(), brush()

plot()

Returns:attached plot

rtti()

Returns:QwtPlotItem.Rtti_PlotCurve

sample(index)

Parameters:index (int) – Index Returns:Sample at position index

scaleRect(xMap, yMap)

Calculate the bounding scale rectangle of 2 maps

Parameters:

• xMap (qwt.scale_map.QwtScaleMap) – Maps x-values into pixel coordinates.
• yMap (qwt.scale_map.QwtScaleMap) – Maps y-values into pixel coordinates.

Returns:

Bounding scale rect of the scale maps, not normalized

select()

Select item

serialize(writer)

Serialize object to HDF5 writer

setAxes(xAxis, yAxis)

Set X and Y axis

The item will painted according to the coordinates of its Axes.

Parameters:

• xAxis (int) – X Axis (QwtPlot.xBottom or QwtPlot.xTop)
• yAxis (int) – Y Axis (QwtPlot.yLeft or QwtPlot.yRight)

See also

setXAxis(), setYAxis(), xAxis(), yAxis()

setAxis(xAxis, yAxis)

Set X and Y axis

Warning

setAxis has been removed in Qwt6: please use setAxes() instead

setBaseline(value)

Set the value of the baseline

The baseline is needed for filling the curve with a brush or the Sticks drawing style.

The interpretation of the baseline depends on the orientation(). With Qt.Horizontal, the baseline is interpreted as a horizontal line at y = baseline(), with Qt.Vertical, it is interpreted as a vertical line at x = baseline().

The default value is 0.0.

Parameters:value (float) – Value of the baseline

See also

baseline(), setBrush(), setStyle()

setBrush(brush)

Assign a brush.

In case of brush.style() != QBrush.NoBrush and style() != QwtPlotCurve.Sticks the area between the curve and the baseline will be filled.

In case not brush.color().isValid() the area will be filled by pen.color(). The fill algorithm simply connects the first and the last curve point to the baseline. So the curve data has to be sorted (ascending or descending).

Parameters:brush (QBrush or QColor) – New brush

See also

brush(), setBaseline(), baseline()

setCurveAttribute(attribute, on=True)

Specify an attribute for drawing the curve

Supported curve attributes:

• QwtPlotCurve.Inverted

Parameters:

• attribute (int) – Curve attribute
• on (bool) – On/Off

See also

testCurveAttribute()

setData(*args, **kwargs)

Initialize data with a series data object or an array of points.

setData(data):

Parameters:data (qwt.plot_series.QwtSeriesData) – Series data (e.g. QwtPointArrayData instance)

setData(xData, yData, [size=None], [finite=True]):

Initialize data with x and y arrays.

This signature was removed in Qwt6 and is temporarily maintained here to ensure compatibility with Qwt5.

Same as setSamples(x, y, [size=None], [finite=True])

Parameters:

• x – List/array of x values
• y – List/array of y values
• size (int or None) – size of xData and yData
• finite (bool) – if True, keep only finite array elements (remove all infinity and not a number values), otherwise do not filter array elements

See also

setSamples()

setItemAttribute(attribute, on=True)

Toggle an item attribute

Parameters:

• attribute (int) – Attribute type
• on (bool) – True/False

See also

testItemAttribute()

setItemInterest(interest, on=True)

Toggle an item interest

Parameters:

• attribute (int) – Interest type
• on (bool) – True/False

See also

testItemInterest()

setLegendAttribute(attribute, on=True)

Specify an attribute how to draw the legend icon

Legend attributes:

• QwtPlotCurve.LegendNoAttribute
• QwtPlotCurve.LegendShowLine
• QwtPlotCurve.LegendShowSymbol
• QwtPlotCurve.LegendShowBrush

Parameters:

• attribute (int) – Legend attribute
• on (bool) – On/Off

See also

testLegendAttribute(), legendIcon()

setLegendIconSize(size)

Set the size of the legend icon

The default setting is 8x8 pixels

Parameters:size (QSize) – Size

See also

legendIconSize(), legendIcon()

setOrientation(orientation)

Set the orientation of the item. Default is Qt.Horizontal.

The orientation() might be used in specific way by a plot item. F.e. a QwtPlotCurve uses it to identify how to display the curve int QwtPlotCurve.Steps or QwtPlotCurve.Sticks style.

See also

:py:meth`orientation()`

setPen(*args)

Build and/or assign a pen, depending on the arguments.

setPen(color, width, style)

Build and assign a pen

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic (see QPen.isCosmetic()). This method signature has been introduced to hide this incompatibility.

Parameters:

• color (QColor) – Pen color
• width (float) – Pen width
• style (Qt.PenStyle) – Pen style

setPen(pen)

Assign a pen

Parameters:pen (QPen) – New pen

See also

pen(), brush()

setRectOfInterest(rect)

Set a the “rect of interest” for the series

Parameters:rect (QRectF) – Rectangle of interest

See also

qwt.plot_series.QwtSeriesData.setRectOfInterest()

setRenderHint(hint, on=True)

Toggle a render hint

Parameters:

• hint (int) – Render hint
• on (bool) – True/False

See also

testRenderHint()

setSamples(*args, **kwargs)

Initialize data with an array of points.

setSamples(data):

Parameters:data (qwt.plot_series.QwtSeriesData) – Series data (e.g. QwtPointArrayData instance)

setSamples(samples):

Same as setData(QwtPointArrayData(samples))

Parameters:samples – List/array of points

setSamples(xData, yData, [size=None], [finite=True]):

Same as setData(QwtPointArrayData(xData, yData, [size=None]))

Parameters:

• xData – List/array of x values
• yData – List/array of y values
• size (int or None) – size of xData and yData
• finite (bool) – if True, keep only finite array elements (remove all infinity and not a number values), otherwise do not filter array elements

See also

qwt.plot_series.QwtPointArrayData

setStyle(style)

Set the curve’s drawing style

Valid curve styles:

• QwtPlotCurve.NoCurve
• QwtPlotCurve.Lines
• QwtPlotCurve.Sticks
• QwtPlotCurve.Steps
• QwtPlotCurve.Dots
• QwtPlotCurve.UserCurve

Parameters:style (int) – Curve style

See also

style()

setSymbol(symbol)

Assign a symbol

The curve will take the ownership of the symbol, hence the previously set symbol will be delete by setting a new one. If symbol is None no symbol will be drawn.

Parameters:symbol (qwt.symbol.QwtSymbol) – Symbol

See also

symbol()

setTitle(title)

Set a new title

Parameters:title (qwt.text.QwtText or str) – Title

See also

title()

setVisible(on)

Show/Hide the item

Parameters:on (bool) – Show if True, otherwise hide

See also

isVisible(), show(), hide()

setXAxis(axis)

Set the X axis

The item will painted according to the coordinates its Axes.

Parameters:axis (int) – X Axis (QwtPlot.xBottom or QwtPlot.xTop)

See also

setAxes(), setYAxis(), xAxis(), yAxis()

setYAxis(axis)

Set the Y axis

The item will painted according to the coordinates its Axes.

Parameters:axis (int) – Y Axis (QwtPlot.yLeft or QwtPlot.yRight)

See also

setAxes(), setXAxis(), xAxis(), yAxis()

setZ(z)

Set the z value

Plot items are painted in increasing z-order.

Parameters:z (float) – Z-value

See also

z(), QwtPlotDict.itemList()

set_data(x, y)

Set curve data:

• x: NumPy array
• y: NumPy array

set_movable(state)

Set item movable state

set_private(state)

Set object as private

set_readonly(state)

Set object readonly state

set_resizable(state)

Set item resizable state (or any action triggered when moving an handle, e.g. rotation)

set_rotatable(state)

Set item rotatable state

set_selectable(state)

Set item selectable state

show()

Show the item

style()

Returns:Style of the curve

See also

setStyle()

swapData(series)

Replace a series without deleting the previous one

Parameters:series (qwt.plot_series.QwtSeriesData) – New series Returns:Previously assigned series

symbol()

Returns:Current symbol or None, when no symbol has been assigned

See also

setSymbol()

testCurveAttribute(attribute)

Returns:True, if attribute is enabled

See also

setCurveAttribute()

testItemAttribute(attribute)

Test an item attribute

Parameters:attribute (int) – Attribute type Returns:True/False

See also

setItemAttribute()

testItemInterest(interest)

Test an item interest

Parameters:attribute (int) – Interest type Returns:True/False

See also

setItemInterest()

testLegendAttribute(attribute)

Parameters:attribute (int) – Legend attribute Returns:True, when attribute is enabled

See also

setLegendAttribute()

testRenderHint(hint)

Test a render hint

Parameters:attribute (int) – Render hint Returns:True/False

See also

setRenderHint()

title()

Returns:Title of the item

See also

setTitle()

unselect()

Unselect item

updateLegend(item, data)

Update the item to changes of the legend info

Plot items that want to display a legend ( not those, that want to be displayed on a legend ! ) will have to implement updateLegend().

updateLegend() is only called when the LegendInterest interest is enabled. The default implementation does nothing.

Parameters:

• item (qwt.plot.QwtPlotItem) – Plot item to be displayed on a legend
• data (list) – Attributes how to display item on the legend

Note

Plot items, that want to be displayed on a legend need to enable the QwtPlotItem.Legend flag and to implement legendData() and legendIcon()

xAxis()

Returns:xAxis

yAxis()

Returns:yAxis

z()

Plot items are painted in increasing z-order.

Returns:item z order

See also

setZ(), QwtPlotDict.itemList()

class plotpy.histogram.ContrastAdjustment(parent=None)

Contrast adjustment tool

style() → QStyle

register_panel(manager)

Register panel to plot manager

configure_panel()

Configure panel

class RenderFlags(QWidget.RenderFlags)

QWidget.RenderFlags(int) QWidget.RenderFlags()

ContrastAdjustment.acceptDrops() → bool

ContrastAdjustment.accessibleDescription() → str

ContrastAdjustment.accessibleName() → str

ContrastAdjustment.actionEvent(QActionEvent)

ContrastAdjustment.actions() → list-of-QAction

ContrastAdjustment.activateWindow()

ContrastAdjustment.addAction(QAction)

ContrastAdjustment.addActions(list-of-QAction)

ContrastAdjustment.adjustSize()

ContrastAdjustment.autoFillBackground() → bool

ContrastAdjustment.backgroundRole() → QPalette.ColorRole

ContrastAdjustment.baseSize() → QSize

ContrastAdjustment.blockSignals(bool) → bool

ContrastAdjustment.changeEvent(QEvent)

ContrastAdjustment.childAt(QPoint) → QWidget

QWidget.childAt(int, int) -> QWidget

ContrastAdjustment.children() → list-of-QObject

ContrastAdjustment.childrenRect() → QRect

ContrastAdjustment.childrenRegion() → QRegion

ContrastAdjustment.clearFocus()

ContrastAdjustment.clearMask()

ContrastAdjustment.close() → bool

ContrastAdjustment.colorCount() → int

ContrastAdjustment.connect(QObject, SIGNAL(), QObject, SLOT(), Qt.ConnectionType=Qt.AutoConnection) → bool

QObject.connect(QObject, SIGNAL(), callable, Qt.ConnectionType=Qt.AutoConnection) -> bool QObject.connect(QObject, SIGNAL(), SLOT(), Qt.ConnectionType=Qt.AutoConnection) -> bool

ContrastAdjustment.contentsMargins() → QMargins

ContrastAdjustment.contentsRect() → QRect

ContrastAdjustment.contextMenuEvent(QContextMenuEvent)

ContrastAdjustment.contextMenuPolicy() → Qt.ContextMenuPolicy

ContrastAdjustment.create(sip.voidptr window=None, bool initializeWindow=True, bool destroyOldWindow=True)

ContrastAdjustment.create_dockwidget(title)

Add to parent QMainWindow as a dock widget

ContrastAdjustment.cursor() → QCursor

ContrastAdjustment.customContextMenuRequested

QWidget.customContextMenuRequested[QPoint] [signal]

ContrastAdjustment.deleteLater()

ContrastAdjustment.depth() → int

ContrastAdjustment.destroy(bool destroyWindow=True, bool destroySubWindows=True)

ContrastAdjustment.destroyed

QObject.destroyed[QObject] [signal] QObject.destroyed [signal]

ContrastAdjustment.devType() → int

ContrastAdjustment.disconnect(QObject, SIGNAL(), QObject, SLOT()) → bool

QObject.disconnect(QObject, SIGNAL(), callable) -> bool

ContrastAdjustment.dragEnterEvent(QDragEnterEvent)

ContrastAdjustment.dragLeaveEvent(QDragLeaveEvent)

ContrastAdjustment.dragMoveEvent(QDragMoveEvent)

ContrastAdjustment.dropEvent(QDropEvent)

ContrastAdjustment.dumpObjectInfo()

ContrastAdjustment.dumpObjectTree()

ContrastAdjustment.dynamicPropertyNames() → list-of-QByteArray

ContrastAdjustment.effectiveWinId() → sip.voidptr

ContrastAdjustment.emit(SIGNAL(), ...)

ContrastAdjustment.enabledChange(bool)

ContrastAdjustment.ensurePolished()

ContrastAdjustment.enterEvent(QEvent)

ContrastAdjustment.event(QEvent) → bool

ContrastAdjustment.eventFilter(QObject, QEvent) → bool

ContrastAdjustment.find(sip.voidptr) → QWidget

ContrastAdjustment.findChild(type, str name='') → QObject

QObject.findChild(tuple, str name=’‘) -> QObject

ContrastAdjustment.findChildren(type, str name='') → list-of-QObject

QObject.findChildren(tuple, str name=’‘) -> list-of-QObject QObject.findChildren(type, QRegExp) -> list-of-QObject QObject.findChildren(tuple, QRegExp) -> list-of-QObject

ContrastAdjustment.focusInEvent(QFocusEvent)

ContrastAdjustment.focusNextChild() → bool

ContrastAdjustment.focusNextPrevChild(bool) → bool

ContrastAdjustment.focusOutEvent(QFocusEvent)

ContrastAdjustment.focusPolicy() → Qt.FocusPolicy

ContrastAdjustment.focusPreviousChild() → bool

ContrastAdjustment.focusProxy() → QWidget

ContrastAdjustment.focusWidget() → QWidget

ContrastAdjustment.font() → QFont

ContrastAdjustment.fontChange(QFont)

ContrastAdjustment.fontInfo() → QFontInfo

ContrastAdjustment.fontMetrics() → QFontMetrics

ContrastAdjustment.foregroundRole() → QPalette.ColorRole

ContrastAdjustment.frameGeometry() → QRect

ContrastAdjustment.frameSize() → QSize

ContrastAdjustment.geometry() → QRect

ContrastAdjustment.getContentsMargins() -> (int, int, int, int)

ContrastAdjustment.grabGesture(Qt.GestureType, Qt.GestureFlags flags=Qt.GestureFlags(0))

ContrastAdjustment.grabKeyboard()

ContrastAdjustment.grabMouse()

QWidget.grabMouse(QCursor)

ContrastAdjustment.grabShortcut(QKeySequence, Qt.ShortcutContext context=Qt.WindowShortcut) → int

ContrastAdjustment.graphicsEffect() → QGraphicsEffect

ContrastAdjustment.graphicsProxyWidget() → QGraphicsProxyWidget

ContrastAdjustment.hasFocus() → bool

ContrastAdjustment.hasMouseTracking() → bool

ContrastAdjustment.height() → int

ContrastAdjustment.heightForWidth(int) → int

ContrastAdjustment.heightMM() → int

ContrastAdjustment.hide()

ContrastAdjustment.inherits(str) → bool

ContrastAdjustment.inputContext() → QInputContext

ContrastAdjustment.inputMethodEvent(QInputMethodEvent)

ContrastAdjustment.inputMethodHints() → Qt.InputMethodHints

ContrastAdjustment.inputMethodQuery(Qt.InputMethodQuery) → object

ContrastAdjustment.insertAction(QAction, QAction)

ContrastAdjustment.insertActions(QAction, list-of-QAction)

ContrastAdjustment.installEventFilter(QObject)

ContrastAdjustment.isActiveWindow() → bool

ContrastAdjustment.isAncestorOf(QWidget) → bool

ContrastAdjustment.isEnabled() → bool

ContrastAdjustment.isEnabledTo(QWidget) → bool

ContrastAdjustment.isEnabledToTLW() → bool

ContrastAdjustment.isFullScreen() → bool

ContrastAdjustment.isHidden() → bool

ContrastAdjustment.isLeftToRight() → bool

ContrastAdjustment.isMaximized() → bool

ContrastAdjustment.isMinimized() → bool

ContrastAdjustment.isModal() → bool

ContrastAdjustment.isRightToLeft() → bool

ContrastAdjustment.isTopLevel() → bool

ContrastAdjustment.isVisible() → bool

ContrastAdjustment.isVisibleTo(QWidget) → bool

ContrastAdjustment.isWidgetType() → bool

ContrastAdjustment.isWindow() → bool

ContrastAdjustment.isWindowModified() → bool

ContrastAdjustment.keyPressEvent(QKeyEvent)

ContrastAdjustment.keyReleaseEvent(QKeyEvent)

ContrastAdjustment.keyboardGrabber() → QWidget

ContrastAdjustment.killTimer(int)

ContrastAdjustment.languageChange()

ContrastAdjustment.layout() → QLayout

ContrastAdjustment.layoutDirection() → Qt.LayoutDirection

ContrastAdjustment.leaveEvent(QEvent)

ContrastAdjustment.locale() → QLocale

ContrastAdjustment.logicalDpiX() → int

ContrastAdjustment.logicalDpiY() → int

ContrastAdjustment.lower()

ContrastAdjustment.mapFrom(QWidget, QPoint) → QPoint

ContrastAdjustment.mapFromGlobal(QPoint) → QPoint

ContrastAdjustment.mapFromParent(QPoint) → QPoint

ContrastAdjustment.mapTo(QWidget, QPoint) → QPoint

ContrastAdjustment.mapToGlobal(QPoint) → QPoint

ContrastAdjustment.mapToParent(QPoint) → QPoint

ContrastAdjustment.mask() → QRegion

ContrastAdjustment.maximumHeight() → int

ContrastAdjustment.maximumSize() → QSize

ContrastAdjustment.maximumWidth() → int

ContrastAdjustment.metaObject() → QMetaObject

ContrastAdjustment.metric(QPaintDevice.PaintDeviceMetric) → int

ContrastAdjustment.minimumHeight() → int

ContrastAdjustment.minimumSize() → QSize

ContrastAdjustment.minimumSizeHint() → QSize

ContrastAdjustment.minimumWidth() → int

ContrastAdjustment.mouseDoubleClickEvent(QMouseEvent)

ContrastAdjustment.mouseGrabber() → QWidget

ContrastAdjustment.mouseMoveEvent(QMouseEvent)

ContrastAdjustment.mousePressEvent(QMouseEvent)

ContrastAdjustment.mouseReleaseEvent(QMouseEvent)

ContrastAdjustment.move(QPoint)

QWidget.move(int, int)

ContrastAdjustment.moveEvent(QMoveEvent)

ContrastAdjustment.moveToThread(QThread)

ContrastAdjustment.nativeParentWidget() → QWidget

ContrastAdjustment.nextInFocusChain() → QWidget

ContrastAdjustment.normalGeometry() → QRect

ContrastAdjustment.numColors() → int

ContrastAdjustment.objectName() → str

ContrastAdjustment.overrideWindowFlags(Qt.WindowFlags)

ContrastAdjustment.overrideWindowState(Qt.WindowStates)

ContrastAdjustment.paintEngine() → QPaintEngine

ContrastAdjustment.paintEvent(QPaintEvent)

ContrastAdjustment.paintingActive() → bool

ContrastAdjustment.palette() → QPalette

ContrastAdjustment.paletteChange(QPalette)

ContrastAdjustment.parent() → QObject

ContrastAdjustment.parentWidget() → QWidget

ContrastAdjustment.physicalDpiX() → int

ContrastAdjustment.physicalDpiY() → int

ContrastAdjustment.pos() → QPoint

ContrastAdjustment.previousInFocusChain() → QWidget

ContrastAdjustment.property(str) → object

ContrastAdjustment.pyqtConfigure(...)

Each keyword argument is either the name of a Qt property or a Qt signal. For properties the property is set to the given value which should be of an appropriate type. For signals the signal is connected to the given value which should be a callable.

ContrastAdjustment.raise_()

ContrastAdjustment.rect() → QRect

ContrastAdjustment.releaseKeyboard()

ContrastAdjustment.releaseMouse()

ContrastAdjustment.releaseShortcut(int)

ContrastAdjustment.removeAction(QAction)

ContrastAdjustment.removeEventFilter(QObject)

ContrastAdjustment.render(QPaintDevice, QPoint targetOffset=QPoint(), QRegion sourceRegion=QRegion(), QWidget.RenderFlags flags=QWidget.DrawWindowBackground|QWidget.DrawChildren)

QWidget.render(QPainter, QPoint targetOffset=QPoint(), QRegion sourceRegion=QRegion(), QWidget.RenderFlags flags=QWidget.DrawWindowBackground|QWidget.DrawChildren)

ContrastAdjustment.repaint()

QWidget.repaint(int, int, int, int) QWidget.repaint(QRect) QWidget.repaint(QRegion)

ContrastAdjustment.resetInputContext()

ContrastAdjustment.resize(QSize)

QWidget.resize(int, int)

ContrastAdjustment.resizeEvent(QResizeEvent)

ContrastAdjustment.restoreGeometry(QByteArray) → bool

ContrastAdjustment.saveGeometry() → QByteArray

ContrastAdjustment.scroll(int, int)

QWidget.scroll(int, int, QRect)

ContrastAdjustment.setAcceptDrops(bool)

ContrastAdjustment.setAccessibleDescription(str)

ContrastAdjustment.setAccessibleName(str)

ContrastAdjustment.setAttribute(Qt.WidgetAttribute, bool on=True)

ContrastAdjustment.setAutoFillBackground(bool)

ContrastAdjustment.setBackgroundRole(QPalette.ColorRole)

ContrastAdjustment.setBaseSize(int, int)

QWidget.setBaseSize(QSize)

ContrastAdjustment.setContentsMargins(int, int, int, int)

QWidget.setContentsMargins(QMargins)

ContrastAdjustment.setContextMenuPolicy(Qt.ContextMenuPolicy)

ContrastAdjustment.setCursor(QCursor)

ContrastAdjustment.setDisabled(bool)

ContrastAdjustment.setEnabled(bool)

ContrastAdjustment.setFixedHeight(int)

ContrastAdjustment.setFixedSize(QSize)

QWidget.setFixedSize(int, int)

ContrastAdjustment.setFixedWidth(int)

ContrastAdjustment.setFocus()

QWidget.setFocus(Qt.FocusReason)

ContrastAdjustment.setFocusPolicy(Qt.FocusPolicy)

ContrastAdjustment.setFocusProxy(QWidget)

ContrastAdjustment.setFont(QFont)

ContrastAdjustment.setForegroundRole(QPalette.ColorRole)

ContrastAdjustment.setGeometry(QRect)

QWidget.setGeometry(int, int, int, int)

ContrastAdjustment.setGraphicsEffect(QGraphicsEffect)

ContrastAdjustment.setHidden(bool)

ContrastAdjustment.setInputContext(QInputContext)

ContrastAdjustment.setInputMethodHints(Qt.InputMethodHints)

ContrastAdjustment.setLayout(QLayout)

ContrastAdjustment.setLayoutDirection(Qt.LayoutDirection)

ContrastAdjustment.setLocale(QLocale)

ContrastAdjustment.setMask(QBitmap)

QWidget.setMask(QRegion)

ContrastAdjustment.setMaximumHeight(int)

ContrastAdjustment.setMaximumSize(int, int)

QWidget.setMaximumSize(QSize)

ContrastAdjustment.setMaximumWidth(int)

ContrastAdjustment.setMinimumHeight(int)

ContrastAdjustment.setMinimumSize(int, int)

QWidget.setMinimumSize(QSize)

ContrastAdjustment.setMinimumWidth(int)

ContrastAdjustment.setMouseTracking(bool)

ContrastAdjustment.setObjectName(str)

ContrastAdjustment.setPalette(QPalette)

ContrastAdjustment.setParent(QWidget)

QWidget.setParent(QWidget, Qt.WindowFlags)

ContrastAdjustment.setProperty(str, object) → bool

ContrastAdjustment.setShortcutAutoRepeat(int, bool enabled=True)

ContrastAdjustment.setShortcutEnabled(int, bool enabled=True)

ContrastAdjustment.setShown(bool)

ContrastAdjustment.setSizeIncrement(int, int)

QWidget.setSizeIncrement(QSize)

ContrastAdjustment.setSizePolicy(QSizePolicy)

QWidget.setSizePolicy(QSizePolicy.Policy, QSizePolicy.Policy)

ContrastAdjustment.setStatusTip(str)

ContrastAdjustment.setStyle(QStyle)

ContrastAdjustment.setStyleSheet(str)

ContrastAdjustment.setTabOrder(QWidget, QWidget)

ContrastAdjustment.setToolTip(str)

ContrastAdjustment.setUpdatesEnabled(bool)

ContrastAdjustment.setVisible(bool)

ContrastAdjustment.setWhatsThis(str)

ContrastAdjustment.setWindowFilePath(str)

ContrastAdjustment.setWindowFlags(Qt.WindowFlags)

ContrastAdjustment.setWindowIcon(QIcon)

ContrastAdjustment.setWindowIconText(str)

ContrastAdjustment.setWindowModality(Qt.WindowModality)

ContrastAdjustment.setWindowModified(bool)

ContrastAdjustment.setWindowOpacity(float)

ContrastAdjustment.setWindowRole(str)

ContrastAdjustment.setWindowState(Qt.WindowStates)

ContrastAdjustment.setWindowTitle(str)

ContrastAdjustment.show()

ContrastAdjustment.showFullScreen()

ContrastAdjustment.showMaximized()

ContrastAdjustment.showMinimized()

ContrastAdjustment.showNormal()

ContrastAdjustment.signalsBlocked() → bool

ContrastAdjustment.size() → QSize

ContrastAdjustment.sizeHint() → QSize

ContrastAdjustment.sizeIncrement() → QSize

ContrastAdjustment.sizePolicy() → QSizePolicy

ContrastAdjustment.stackUnder(QWidget)

ContrastAdjustment.startTimer(int) → int

ContrastAdjustment.statusTip() → str

ContrastAdjustment.styleSheet() → str

ContrastAdjustment.tabletEvent(QTabletEvent)

ContrastAdjustment.testAttribute(Qt.WidgetAttribute) → bool

ContrastAdjustment.thread() → QThread

ContrastAdjustment.toolTip() → str

ContrastAdjustment.topLevelWidget() → QWidget

ContrastAdjustment.tr(str, str disambiguation=None, int n=-1) → str

ContrastAdjustment.trUtf8(str, str disambiguation=None, int n=-1) → str

ContrastAdjustment.underMouse() → bool

ContrastAdjustment.ungrabGesture(Qt.GestureType)

ContrastAdjustment.unsetCursor()

ContrastAdjustment.unsetLayoutDirection()

ContrastAdjustment.unsetLocale()

ContrastAdjustment.update()

QWidget.update(QRect) QWidget.update(QRegion) QWidget.update(int, int, int, int)

ContrastAdjustment.updateGeometry()

ContrastAdjustment.updateMicroFocus()

ContrastAdjustment.updatesEnabled() → bool

ContrastAdjustment.visibility_changed(enable)

DockWidget visibility has changed

ContrastAdjustment.visibleRegion() → QRegion

ContrastAdjustment.whatsThis() → str

ContrastAdjustment.wheelEvent(QWheelEvent)

ContrastAdjustment.width() → int

ContrastAdjustment.widthMM() → int

ContrastAdjustment.winEvent(MSG) -> (bool, int)

ContrastAdjustment.winId() → sip.voidptr

ContrastAdjustment.window() → QWidget

ContrastAdjustment.windowActivationChange(bool)

ContrastAdjustment.windowFilePath() → str

ContrastAdjustment.windowFlags() → Qt.WindowFlags

ContrastAdjustment.windowIcon() → QIcon

ContrastAdjustment.windowIconText() → str

ContrastAdjustment.windowModality() → Qt.WindowModality

ContrastAdjustment.windowOpacity() → float

ContrastAdjustment.windowRole() → str

ContrastAdjustment.windowState() → Qt.WindowStates

ContrastAdjustment.windowTitle() → str

ContrastAdjustment.windowType() → Qt.WindowType

ContrastAdjustment.x() → int

ContrastAdjustment.y() → int

ContrastAdjustment.set_range(_min, _max)

Set contrast panel’s histogram range

class plotpy.histogram.LevelsHistogram(parent=None)

Image levels histogram widget

SIG_VOI_CHANGED

Signal emitted by LevelsHistogram when LUT range was changed

set_full_range()

Set range bounds to image min/max levels

eliminate_outliers(percent)

Eliminate outliers: eliminate percent/2*N counts on each side of the histogram (where N is the total count number)

DEFAULT_ITEM_TYPE

alias of ICurveItemType

class RenderFlags(QWidget.RenderFlags)

QWidget.RenderFlags(int) QWidget.RenderFlags()

LevelsHistogram.acceptDrops() → bool

LevelsHistogram.accessibleDescription() → str

LevelsHistogram.accessibleName() → str

LevelsHistogram.actions() → list-of-QAction

LevelsHistogram.activateWindow()

LevelsHistogram.addAction(QAction)

LevelsHistogram.addActions(list-of-QAction)

LevelsHistogram.add_item(item, z=None)

Add a plot item instance to this plot widget

• item: qwt.QwtPlotItem object implementing the plotpy.interfaces.IBasePlotItem interface
• z: item’s z order (None -> z = max(self.get_items())+1)

LevelsHistogram.add_item_with_z_offset(item, zoffset)

Add a plot item instance within a specified z range, over zmin

LevelsHistogram.adjustSize()

LevelsHistogram.attachItem(plotItem, on)

Attach/Detach a plot item

Parameters:

• plotItem (qwt.plot.QwtPlotItem) – Plot item
• on (bool) – When true attach the item, otherwise detach it

LevelsHistogram.autoDelete()

Returns:true if auto deletion is enabled

See also

setAutoDelete(), insertItem()

LevelsHistogram.autoFillBackground() → bool

LevelsHistogram.autoRefresh()

Replots the plot if autoReplot() is True.

LevelsHistogram.autoReplot()

Returns:True if the autoReplot option is set.

See also

setAutoReplot()

LevelsHistogram.axisAutoScale(axisId)

Parameters:axisId (int) – Axis index Returns:True, if autoscaling is enabled

LevelsHistogram.axisEnabled(axisId)

Parameters:axisId (int) – Axis index Returns:True, if a specified axis is enabled

LevelsHistogram.axisFont(axisId)

Parameters:axisId (int) – Axis index Returns:The font of the scale labels for a specified axis

LevelsHistogram.axisInterval(axisId)

Parameters:axisId (int) – Axis index Returns:The current interval of the specified axis

This is only a convenience function for axisScaleDiv(axisId).interval()

See also

qwt.scale_div.QwtScaleDiv, axisScaleDiv()

LevelsHistogram.axisMaxMajor(axisId)

Parameters:axisId (int) – Axis index Returns:The maximum number of major ticks for a specified axis

See also

setAxisMaxMajor(), qwt.scale_engine.QwtScaleEngine.divideScale()

LevelsHistogram.axisMaxMinor(axisId)

Parameters:axisId (int) – Axis index Returns:The maximum number of minor ticks for a specified axis

See also

setAxisMaxMinor(), qwt.scale_engine.QwtScaleEngine.divideScale()

LevelsHistogram.axisScaleDiv(axisId)

Parameters:axisId (int) – Axis index Returns:The scale division of a specified axis

axisScaleDiv(axisId).lowerBound(), axisScaleDiv(axisId).upperBound() are the current limits of the axis scale.

See also

qwt.scale_div.QwtScaleDiv, setAxisScaleDiv(), qwt.scale_engine.QwtScaleEngine.divideScale()

LevelsHistogram.axisScaleDraw(axisId)

Parameters:axisId (int) – Axis index Returns:Specified scaleDraw for axis, or NULL if axis is invalid.

LevelsHistogram.axisScaleEngine(axisId)

Parameters:axisId (int) – Axis index Returns:Scale engine for a specific axis

See also

setAxisScaleEngine()

LevelsHistogram.axisStepSize(axisId)

Parameters:axisId (int) – Axis index Returns:step size parameter value

This doesn’t need to be the step size of the current scale.

See also

setAxisScale(), qwt.scale_engine.QwtScaleEngine.divideScale()

LevelsHistogram.axisTitle(axisId)

Parameters:axisId (int) – Axis index Returns:Title of a specified axis

LevelsHistogram.axisValid(axisId)

Parameters:axisId (int) – Axis Returns:True if the specified axis exists, otherwise False

LevelsHistogram.axisWidget(axisId)

Parameters:axisId (int) – Axis index Returns:Scale widget of the specified axis, or None if axisId is invalid.

LevelsHistogram.backgroundRole() → QPalette.ColorRole

LevelsHistogram.baseSize() → QSize

LevelsHistogram.blockSignals(bool) → bool

LevelsHistogram.canvas()

Returns:the plot’s canvas

LevelsHistogram.canvasBackground()

Returns:Background brush of the plotting area.

See also

setCanvasBackground()

LevelsHistogram.canvasMap(axisId)

Parameters:axisId (int) – Axis Returns:Map for the axis on the canvas. With this map pixel coordinates can translated to plot coordinates and vice versa.

See also

qwt.scale_map.QwtScaleMap, transform(), invTransform()

LevelsHistogram.changeEvent(QEvent)

LevelsHistogram.childAt(QPoint) → QWidget

QWidget.childAt(int, int) -> QWidget

LevelsHistogram.children() → list-of-QObject

LevelsHistogram.childrenRect() → QRect

LevelsHistogram.childrenRegion() → QRegion

LevelsHistogram.clearFocus()

LevelsHistogram.clearMask()

LevelsHistogram.close() → bool

LevelsHistogram.colorCount() → int

LevelsHistogram.connect(QObject, SIGNAL(), QObject, SLOT(), Qt.ConnectionType=Qt.AutoConnection) → bool

QObject.connect(QObject, SIGNAL(), callable, Qt.ConnectionType=Qt.AutoConnection) -> bool QObject.connect(QObject, SIGNAL(), SLOT(), Qt.ConnectionType=Qt.AutoConnection) -> bool

LevelsHistogram.contentsMargins() → QMargins

LevelsHistogram.contentsRect() → QRect

LevelsHistogram.contextMenuPolicy() → Qt.ContextMenuPolicy

LevelsHistogram.copy_to_clipboard()

Copy widget’s window to clipboard

LevelsHistogram.cursor() → QCursor

LevelsHistogram.customContextMenuRequested

QWidget.customContextMenuRequested[QPoint] [signal]

LevelsHistogram.del_all_items(except_grid=True)

Del all items, eventually (default) except grid

LevelsHistogram.del_item(item)

Remove item from widget Convenience function (see ‘del_items’)

LevelsHistogram.del_items(items)

Remove item from widget

LevelsHistogram.deleteLater()

LevelsHistogram.depth() → int

LevelsHistogram.deserialize(reader)

Restore items from HDF5 file:

• reader: guidata.hdf5io.HDF5Reader object

See also plotpy.baseplot.BasePlot.save_items_to_hdf5()

LevelsHistogram.destroyed

QObject.destroyed[QObject] [signal] QObject.destroyed [signal]

LevelsHistogram.detachItems(rtti, autoDelete)

Detach items from the dictionary

Parameters:

• rtti (int) – In case of QwtPlotItem.Rtti_PlotItem detach all items otherwise only those items of the type rtti.
• autoDelete (bool) – If true, delete all detached items

LevelsHistogram.devType() → int

LevelsHistogram.disable_autoscale()

Re-apply the axis scales so as to disable autoscaling without changing the view

LevelsHistogram.disable_unused_axes()

Disable unused axes

LevelsHistogram.disconnect(QObject, SIGNAL(), QObject, SLOT()) → bool

QObject.disconnect(QObject, SIGNAL(), callable) -> bool

LevelsHistogram.do_autoscale(replot=True, axis_id=None)

Do autoscale on all axes

LevelsHistogram.do_pan_view(dx, dy)

Translate the active axes by dx, dy dx, dy are tuples composed of (initial pos, dest pos)

LevelsHistogram.do_zoom_view(dx, dy, lock_aspect_ratio=False)

Change the scale of the active axes (zoom/dezoom) according to dx, dy dx, dy are tuples composed of (initial pos, dest pos) We try to keep initial pos fixed on the canvas as the scale changes

LevelsHistogram.drawCanvas(painter)

Redraw the canvas.

Parameters:painter (QPainter) – Painter used for drawing

Warning

drawCanvas calls drawItems what is also used for printing. Applications that like to add individual plot items better overload drawItems()

See also

getCanvasMarginsHint(), QwtPlotItem.getCanvasMarginHint()

LevelsHistogram.drawFrame(QPainter)

LevelsHistogram.drawItems(painter, canvasRect, maps)

Redraw the canvas.

Parameters:

• painter (QPainter) – Painter used for drawing
• canvasRect (QRectF) – Bounding rectangle where to paint
• maps (list) – QwtPlot.axisCnt maps, mapping between plot and paint device coordinates

Note

Usually canvasRect is contentsRect() of the plot canvas. Due to a bug in Qt this rectangle might be wrong for certain frame styles ( f.e QFrame.Box ) and it might be necessary to fix the margins manually using QWidget.setContentsMargins()

LevelsHistogram.dumpObjectInfo()

LevelsHistogram.dumpObjectTree()

LevelsHistogram.dynamicPropertyNames() → list-of-QByteArray

LevelsHistogram.edit_axis_parameters(axis_id)

Edit axis parameters

LevelsHistogram.edit_plot_parameters(key)

Edit plot parameters

LevelsHistogram.effectiveWinId() → sip.voidptr

LevelsHistogram.emit(SIGNAL(), ...)

LevelsHistogram.enableAxis(axisId, tf=True)

Enable or disable a specified axis

When an axis is disabled, this only means that it is not visible on the screen. Curves, markers and can be attached to disabled axes, and transformation of screen coordinates into values works as normal.

Only xBottom and yLeft are enabled by default.

Parameters:

• axisId (int) – Axis index
• tf (bool) – True (enabled) or False (disabled)

LevelsHistogram.enable_used_axes()

Enable only used axes For now, this is needed only by the pyplot interface

LevelsHistogram.ensurePolished()

LevelsHistogram.exportTo(filename, size=(800, 600), size_mm=None, resolution=72.0, format_=None)

Export plot to PDF or image file (SVG, PNG, ...)

Parameters:

• filename (str) – Filename
• size (tuple) – (width, height) size in pixels
• size_mm (tuple) – (width, height) size in millimeters
• resolution (float) – Image resolution
• format (str) – File format (PDF, SVG, PNG, ...)

LevelsHistogram.find(sip.voidptr) → QWidget

LevelsHistogram.findChild(type, str name='') → QObject

QObject.findChild(tuple, str name=’‘) -> QObject

LevelsHistogram.findChildren(type, str name='') → list-of-QObject

QObject.findChildren(tuple, str name=’‘) -> list-of-QObject QObject.findChildren(type, QRegExp) -> list-of-QObject QObject.findChildren(tuple, QRegExp) -> list-of-QObject

LevelsHistogram.focusPolicy() → Qt.FocusPolicy

LevelsHistogram.focusProxy() → QWidget

LevelsHistogram.focusWidget() → QWidget

LevelsHistogram.font() → QFont

LevelsHistogram.fontInfo() → QFontInfo

LevelsHistogram.fontMetrics() → QFontMetrics

LevelsHistogram.footer()

Returns:Text of the footer

See also

setFooter()

LevelsHistogram.footerLabel()

Returns:Footer label widget.

LevelsHistogram.foregroundRole() → QPalette.ColorRole

LevelsHistogram.frameGeometry() → QRect

LevelsHistogram.frameRect() → QRect

LevelsHistogram.frameShadow() → QFrame.Shadow

LevelsHistogram.frameShape() → QFrame.Shape

LevelsHistogram.frameSize() → QSize

LevelsHistogram.frameStyle() → int

LevelsHistogram.frameWidth() → int

LevelsHistogram.geometry() → QRect

LevelsHistogram.getCanvasMarginsHint(maps, canvasRect)

Calculate the canvas margins

Parameters:

• maps (list) – QwtPlot.axisCnt maps, mapping between plot and paint device coordinates
• canvasRect (QRectF) – Bounding rectangle where to paint

Plot items might indicate, that they need some extra space at the borders of the canvas by the QwtPlotItem.Margins flag.

See also

updateCanvasMargins(), getCanvasMarginHint()

LevelsHistogram.getContentsMargins() -> (int, int, int, int)

LevelsHistogram.get_active_axes()

Return active axes

LevelsHistogram.get_active_item(force=False)

Return active item Force item activation if there is no active item

LevelsHistogram.get_axesparam_class(item)

Return AxesParam dataset class associated to item’s type

LevelsHistogram.get_axis_color(axis_id)

Get axis color (color name, i.e. string)

LevelsHistogram.get_axis_direction(axis_id)

Return axis direction of increasing values

• axis_id: axis id (BasePlot.Y_LEFT, BasePlot.X_BOTTOM, ...) or string: ‘bottom’, ‘left’, ‘top’ or ‘right’

LevelsHistogram.get_axis_font(axis_id)

Get axis font

LevelsHistogram.get_axis_id(axis_name)

Return axis ID from axis name If axis ID is passed directly, check the ID

LevelsHistogram.get_axis_limits(axis_id)

Return axis limits (minimum and maximum values)

LevelsHistogram.get_axis_scale(axis_id)

Return the name (‘lin’ or ‘log’) of the scale used by axis

LevelsHistogram.get_axis_title(axis_id)

Get axis title

LevelsHistogram.get_axis_unit(axis_id)

Get axis unit

LevelsHistogram.get_context_menu()

Return widget context menu

LevelsHistogram.get_default_item()

Return default item, depending on plot’s default item type (e.g. for a curve plot, this is a curve item type).

Return nothing if there is more than one item matching the default item type.

LevelsHistogram.get_items(z_sorted=False, item_type=None)

Return widget’s item list (items are based on IBasePlotItem’s interface)

LevelsHistogram.get_last_active_item(item_type)

Return last active item corresponding to passed item_type

LevelsHistogram.get_max_z()

Return maximum z-order for all items registered in plot If there is no item, return 0

LevelsHistogram.get_nearest_object(pos, close_dist=0)

Return nearest item from position ‘pos’

If close_dist > 0:

Return the first found item (higher z) which distance to ‘pos’ is less than close_dist

else:

Return the closest item

LevelsHistogram.get_nearest_object_in_z(pos)

Return nearest item for which position ‘pos’ is inside of it (iterate over items with respect to their ‘z’ coordinate)

LevelsHistogram.get_plot_limits(xaxis='bottom', yaxis='left')

Return plot scale limits

LevelsHistogram.get_private_items(z_sorted=False, item_type=None)

Return widget’s private item list (items are based on IBasePlotItem’s interface)

LevelsHistogram.get_public_items(z_sorted=False, item_type=None)

Return widget’s public item list (items are based on IBasePlotItem’s interface)

LevelsHistogram.get_scales()

Return active curve scales

LevelsHistogram.get_selected_items(z_sorted=False, item_type=None)

Return selected items

LevelsHistogram.get_title()

Get plot title

LevelsHistogram.grabGesture(Qt.GestureType, Qt.GestureFlags flags=Qt.GestureFlags(0))

LevelsHistogram.grabKeyboard()

LevelsHistogram.grabMouse()

QWidget.grabMouse(QCursor)

LevelsHistogram.grabShortcut(QKeySequence, Qt.ShortcutContext context=Qt.WindowShortcut) → int

LevelsHistogram.graphicsEffect() → QGraphicsEffect

LevelsHistogram.graphicsProxyWidget() → QGraphicsProxyWidget

LevelsHistogram.hasFocus() → bool

LevelsHistogram.hasMouseTracking() → bool

LevelsHistogram.height() → int

LevelsHistogram.heightForWidth(int) → int

LevelsHistogram.heightMM() → int

LevelsHistogram.hide()

LevelsHistogram.hide_items(items=None, item_type=None)

Hide items (if items is None, hide all items)

LevelsHistogram.inherits(str) → bool

LevelsHistogram.initAxesData()

Initialize axes

LevelsHistogram.inputContext() → QInputContext

LevelsHistogram.inputMethodHints() → Qt.InputMethodHints

LevelsHistogram.inputMethodQuery(Qt.InputMethodQuery) → object

LevelsHistogram.insertAction(QAction, QAction)

LevelsHistogram.insertActions(QAction, list-of-QAction)

LevelsHistogram.insertItem(item)

Insert a plot item

Parameters:item (qwt.plot.QwtPlotItem) – PlotItem

See also

removeItem()

LevelsHistogram.insertLegend(legend, pos=None, ratio=-1)

Insert a legend

If the position legend is QwtPlot.LeftLegend or QwtPlot.RightLegend the legend will be organized in one column from top to down. Otherwise the legend items will be placed in a table with a best fit number of columns from left to right.

insertLegend() will set the plot widget as parent for the legend. The legend will be deleted in the destructor of the plot or when another legend is inserted.

Legends, that are not inserted into the layout of the plot widget need to connect to the legendDataChanged() signal. Calling updateLegend() initiates this signal for an initial update. When the application code wants to implement its own layout this also needs to be done for rendering plots to a document ( see QwtPlotRenderer ).

Parameters:

• legend (qwt.legend.QwtAbstractLegend) – Legend
• pos (QwtPlot.LegendPosition) – The legend’s position.
• ratio (float) – Ratio between legend and the bounding rectangle of title, canvas and axes

Note

For top/left position the number of columns will be limited to 1, otherwise it will be set to unlimited.

Note

The legend will be shrunk if it would need more space than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0 it will be reset to the default ratio. The default vertical/horizontal ratio is 0.33/0.5.

See also

legend(), qwt.plot_layout.QwtPlotLayout.legendPosition(), qwt.plot_layout.QwtPlotLayout.setLegendPosition()

LevelsHistogram.installEventFilter(QObject)

LevelsHistogram.invTransform(axisId, pos)

Transform the x or y coordinate of a position in the drawing region into a value.

Parameters:

• axisId (int) – Axis index
• pos (int) – position

Warning

The position can be an x or a y coordinate, depending on the specified axis.

LevelsHistogram.invalidate()

Invalidate paint cache and schedule redraw use instead of replot when only the content of the canvas needs redrawing (axes, shouldn’t change)

LevelsHistogram.isActiveWindow() → bool

LevelsHistogram.isAncestorOf(QWidget) → bool

LevelsHistogram.isEnabled() → bool

LevelsHistogram.isEnabledTo(QWidget) → bool

LevelsHistogram.isEnabledToTLW() → bool

LevelsHistogram.isFullScreen() → bool

LevelsHistogram.isHidden() → bool

LevelsHistogram.isLeftToRight() → bool

LevelsHistogram.isMaximized() → bool

LevelsHistogram.isMinimized() → bool

LevelsHistogram.isModal() → bool

LevelsHistogram.isRightToLeft() → bool

LevelsHistogram.isTopLevel() → bool

LevelsHistogram.isVisible() → bool

LevelsHistogram.isVisibleTo(QWidget) → bool

LevelsHistogram.isWidgetType() → bool

LevelsHistogram.isWindow() → bool

LevelsHistogram.isWindowModified() → bool

LevelsHistogram.itemList(rtti=None)

A list of attached plot items.

Use caution when iterating these lists, as removing/detaching an item will invalidate the iterator. Instead you can place pointers to objects to be removed in a removal list, and traverse that list later.

Parameters:rtti (int) – In case of QwtPlotItem.Rtti_PlotItem detach all items otherwise only those items of the type rtti. Returns:List of all attached plot items of a specific type. If rtti is None, return a list of all attached plot items.

LevelsHistogram.keyboardGrabber() → QWidget

LevelsHistogram.killTimer(int)

LevelsHistogram.layout() → QLayout

LevelsHistogram.layoutDirection() → Qt.LayoutDirection

LevelsHistogram.legend()

Returns:the plot’s legend

See also

insertLegend()

LevelsHistogram.lineWidth() → int

LevelsHistogram.locale() → QLocale

LevelsHistogram.logicalDpiX() → int

LevelsHistogram.logicalDpiY() → int

LevelsHistogram.lower()

LevelsHistogram.mapFrom(QWidget, QPoint) → QPoint

LevelsHistogram.mapFromGlobal(QPoint) → QPoint

LevelsHistogram.mapFromParent(QPoint) → QPoint

LevelsHistogram.mapTo(QWidget, QPoint) → QPoint

LevelsHistogram.mapToGlobal(QPoint) → QPoint

LevelsHistogram.mapToParent(QPoint) → QPoint

LevelsHistogram.mask() → QRegion

LevelsHistogram.maximumHeight() → int

LevelsHistogram.maximumSize() → QSize

LevelsHistogram.maximumWidth() → int

LevelsHistogram.metaObject() → QMetaObject

LevelsHistogram.midLineWidth() → int

LevelsHistogram.minimumHeight() → int

LevelsHistogram.minimumSize() → QSize

LevelsHistogram.minimumSizeHint()

Returns:Return a minimum size hint

LevelsHistogram.minimumWidth() → int

LevelsHistogram.mouseDoubleClickEvent(event)

Reimplement QWidget method

LevelsHistogram.mouseGrabber() → QWidget

LevelsHistogram.move(QPoint)

QWidget.move(int, int)

LevelsHistogram.moveToThread(QThread)

LevelsHistogram.move_down(item_list)

Move item(s) down, i.e. to the background (swap item with the previous item in z-order)

item: plot item or list of plot items

Return True if items have been moved effectively

LevelsHistogram.move_up(item_list)

Move item(s) up, i.e. to the foreground (swap item with the next item in z-order)

item: plot item or list of plot items

Return True if items have been moved effectively

LevelsHistogram.nativeParentWidget() → QWidget

LevelsHistogram.nextInFocusChain() → QWidget

LevelsHistogram.normalGeometry() → QRect

LevelsHistogram.numColors() → int

LevelsHistogram.objectName() → str

LevelsHistogram.overrideWindowFlags(Qt.WindowFlags)

LevelsHistogram.overrideWindowState(Qt.WindowStates)

LevelsHistogram.paintEngine() → QPaintEngine

LevelsHistogram.paintEvent(QPaintEvent)

LevelsHistogram.paintingActive() → bool

LevelsHistogram.palette() → QPalette

LevelsHistogram.parent() → QObject

LevelsHistogram.parentWidget() → QWidget

LevelsHistogram.physicalDpiX() → int

LevelsHistogram.physicalDpiY() → int

LevelsHistogram.plotLayout()

Returns:the plot’s layout

See also

setPlotLayout()

LevelsHistogram.pos() → QPoint

LevelsHistogram.previousInFocusChain() → QWidget

LevelsHistogram.print_(printer)

Print plot to printer

Parameters:printer (QPaintDevice or QPrinter or QSvgGenerator) – Printer

LevelsHistogram.property(str) → object

LevelsHistogram.pyqtConfigure(...)

Each keyword argument is either the name of a Qt property or a Qt signal. For properties the property is set to the given value which should be of an appropriate type. For signals the signal is connected to the given value which should be a callable.

LevelsHistogram.raise_()

LevelsHistogram.read_axes_styles(section, options)

Read axes styles from section and options (one option for each axis in the order left, right, bottom, top)

Skip axis if option is None

LevelsHistogram.rect() → QRect

LevelsHistogram.releaseKeyboard()

LevelsHistogram.releaseMouse()

LevelsHistogram.releaseShortcut(int)

LevelsHistogram.removeAction(QAction)

LevelsHistogram.removeEventFilter(QObject)

LevelsHistogram.removeItem(item)

Remove a plot item

Parameters:item (qwt.plot.QwtPlotItem) – PlotItem

See also

insertItem()

LevelsHistogram.render(QPaintDevice, QPoint targetOffset=QPoint(), QRegion sourceRegion=QRegion(), QWidget.RenderFlags flags=QWidget.DrawWindowBackground|QWidget.DrawChildren)

QWidget.render(QPainter, QPoint targetOffset=QPoint(), QRegion sourceRegion=QRegion(), QWidget.RenderFlags flags=QWidget.DrawWindowBackground|QWidget.DrawChildren)

LevelsHistogram.repaint()

QWidget.repaint(int, int, int, int) QWidget.repaint(QRect) QWidget.repaint(QRegion)

LevelsHistogram.replot()

Redraw the plot

If the autoReplot option is not set (which is the default) or if any curves are attached to raw data, the plot has to be refreshed explicitly in order to make changes visible.

See also

updateAxes(), setAutoReplot()

LevelsHistogram.resize(QSize)

QWidget.resize(int, int)

LevelsHistogram.restoreGeometry(QByteArray) → bool

LevelsHistogram.restore_items(iofile)

Restore items from file using the pickle protocol

• iofile: file object or filename

See also plotpy.baseplot.BasePlot.save_items()

LevelsHistogram.saveGeometry() → QByteArray

LevelsHistogram.save_items(iofile, selected=False)

Save (serializable) items to file using the pickle protocol

• iofile: file object or filename
• selected=False: if True, will save only selected items

See also plotpy.baseplot.BasePlot.restore_items()

LevelsHistogram.save_widget(fname)

Grab widget’s window and save it to filename (*.png, *.pdf)

LevelsHistogram.scroll(int, int)

QWidget.scroll(int, int, QRect)

LevelsHistogram.select_all()

Select all selectable items

LevelsHistogram.select_item(item)

Select item

LevelsHistogram.select_some_items(items)

Select items

LevelsHistogram.serialize(writer, selected=False)

Save (serializable) items to HDF5 file:

• writer: guidata.hdf5io.HDF5Writer object
• selected=False: if True, will save only selected items

See also plotpy.baseplot.BasePlot.restore_items_from_hdf5()

LevelsHistogram.setAcceptDrops(bool)

LevelsHistogram.setAccessibleDescription(str)

LevelsHistogram.setAccessibleName(str)

LevelsHistogram.setAttribute(Qt.WidgetAttribute, bool on=True)

LevelsHistogram.setAutoDelete(autoDelete)

En/Disable Auto deletion

If Auto deletion is on all attached plot items will be deleted in the destructor of QwtPlotDict. The default value is on.

Parameters:autoDelete (bool) – enable/disable

See also

autoDelete(), insertItem()

LevelsHistogram.setAutoFillBackground(bool)

LevelsHistogram.setAutoReplot(tf=True)

Set or reset the autoReplot option

If the autoReplot option is set, the plot will be updated implicitly by manipulating member functions. Since this may be time-consuming, it is recommended to leave this option switched off and call replot() explicitly if necessary.

The autoReplot option is set to false by default, which means that the user has to call replot() in order to make changes visible.

Parameters:tf (bool) – True or False. Defaults to True.

See also

canvas()

LevelsHistogram.setAxisAutoScale(axisId, on=True)

Enable autoscaling for a specified axis

This member function is used to switch back to autoscaling mode after a fixed scale has been set. Autoscaling is enabled by default.

Parameters:

• axisId (int) – Axis index
• on (bool) – On/Off

See also

setAxisScale(), setAxisScaleDiv(), updateAxes()

Note

The autoscaling flag has no effect until updateAxes() is executed ( called by replot() ).

LevelsHistogram.setAxisFont(axisId, font)

Change the font of an axis

Parameters:

• axisId (int) – Axis index
• font (QFont) – Font

Warning

This function changes the font of the tick labels, not of the axis title.

LevelsHistogram.setAxisLabelAlignment(axisId, alignment)

Change the alignment of the tick labels

Parameters:

• axisId (int) – Axis index
• alignment (Qt.Alignment) – Or’d Qt.AlignmentFlags

See also

qwt.scale_draw.QwtScaleDraw.setLabelAlignment()

LevelsHistogram.setAxisLabelAutoSize(axisId, state)

Set tick labels automatic size option (default: on)

Parameters:

• axisId (int) – Axis index
• state (bool) – On/off

See also

qwt.scale_draw.QwtScaleDraw.setLabelAutoSize()

LevelsHistogram.setAxisLabelRotation(axisId, rotation)

Rotate all tick labels

Parameters:

• axisId (int) – Axis index
• rotation (float) – Angle in degrees. When changing the label rotation, the label alignment might be adjusted too.

See also

setLabelRotation(), setAxisLabelAlignment()

LevelsHistogram.setAxisMaxMajor(axisId, maxMajor)

Set the maximum number of major scale intervals for a specified axis

Parameters:

• axisId (int) – Axis index
• maxMajor (int) – Maximum number of major steps

See also

axisMaxMajor()

LevelsHistogram.setAxisMaxMinor(axisId, maxMinor)

Set the maximum number of minor scale intervals for a specified axis

Parameters:

• axisId (int) – Axis index
• maxMinor (int) – Maximum number of minor steps

See also

axisMaxMinor()

LevelsHistogram.setAxisScale(axisId, min_, max_, stepSize=0)

Disable autoscaling and specify a fixed scale for a selected axis.

In updateAxes() the scale engine calculates a scale division from the specified parameters, that will be assigned to the scale widget. So updates of the scale widget usually happen delayed with the next replot.

Parameters:

• axisId (int) – Axis index
• min (float) – Minimum of the scale
• max (float) – Maximum of the scale
• stepSize (float) – Major step size. If <code>step == 0</code>, the step size is calculated automatically using the maxMajor setting.

See also

setAxisMaxMajor(), setAxisAutoScale(), axisStepSize(), qwt.scale_engine.QwtScaleEngine.divideScale()

LevelsHistogram.setAxisScaleDiv(axisId, scaleDiv)

Disable autoscaling and specify a fixed scale for a selected axis.

The scale division will be stored locally only until the next call of updateAxes(). So updates of the scale widget usually happen delayed with the next replot.

Parameters:

• axisId (int) – Axis index
• scaleDiv (qwt.scale_div.QwtScaleDiv) – Scale division

See also

setAxisScale(), setAxisAutoScale()

LevelsHistogram.setAxisScaleDraw(axisId, scaleDraw)

Set a scale draw

Parameters:

• axisId (int) – Axis index
• scaleDraw (qwt.scale_draw.QwtScaleDraw) – Object responsible for drawing scales.

By passing scaleDraw it is possible to extend QwtScaleDraw functionality and let it take place in QwtPlot. Please note that scaleDraw has to be created with new and will be deleted by the corresponding QwtScale member ( like a child object ).

See also

qwt.scale_draw.QwtScaleDraw, qwt.scale_widget.QwtScaleWigdet

Warning

The attributes of scaleDraw will be overwritten by those of the previous QwtScaleDraw.

LevelsHistogram.setAxisScaleEngine(axisId, scaleEngine)

Change the scale engine for an axis

Parameters:

• axisId (int) – Axis index
• scaleEngine (qwt.scale_engine.QwtScaleEngine) – Scale engine

See also

axisScaleEngine()

LevelsHistogram.setAxisTitle(axisId, title)

Change the title of a specified axis

Parameters:

• axisId (int) – Axis index
• title (qwt.text.QwtText or str) – axis title

LevelsHistogram.setBackgroundRole(QPalette.ColorRole)

LevelsHistogram.setBaseSize(int, int)

QWidget.setBaseSize(QSize)

LevelsHistogram.setCanvas(canvas)

Set the drawing canvas of the plot widget.

The default canvas is a QwtPlotCanvas.

Parameters:canvas (QWidget) – Canvas Widget

See also

canvas()

LevelsHistogram.setCanvasBackground(brush)

Change the background of the plotting area

Sets brush to QPalette.Window of all color groups of the palette of the canvas. Using canvas().setPalette() is a more powerful way to set these colors.

Parameters:brush (QBrush) – New background brush

See also

canvasBackground()

LevelsHistogram.setContentsMargins(int, int, int, int)

QWidget.setContentsMargins(QMargins)

LevelsHistogram.setContextMenuPolicy(Qt.ContextMenuPolicy)

LevelsHistogram.setCursor(QCursor)

LevelsHistogram.setDisabled(bool)

LevelsHistogram.setEnabled(bool)

LevelsHistogram.setFixedHeight(int)

LevelsHistogram.setFixedSize(QSize)

QWidget.setFixedSize(int, int)

LevelsHistogram.setFixedWidth(int)

LevelsHistogram.setFocus()

QWidget.setFocus(Qt.FocusReason)

LevelsHistogram.setFocusPolicy(Qt.FocusPolicy)

LevelsHistogram.setFocusProxy(QWidget)

LevelsHistogram.setFont(QFont)

LevelsHistogram.setFooter(text)

Change the text the footer

Parameters:text (str or qwt.text.QwtText) – New text of the footer

See also

footer()

LevelsHistogram.setForegroundRole(QPalette.ColorRole)

LevelsHistogram.setFrameRect(QRect)

LevelsHistogram.setFrameShadow(QFrame.Shadow)

LevelsHistogram.setFrameShape(QFrame.Shape)

LevelsHistogram.setFrameStyle(int)

LevelsHistogram.setGeometry(QRect)

QWidget.setGeometry(int, int, int, int)

LevelsHistogram.setGraphicsEffect(QGraphicsEffect)

LevelsHistogram.setHidden(bool)

LevelsHistogram.setInputContext(QInputContext)

LevelsHistogram.setInputMethodHints(Qt.InputMethodHints)

LevelsHistogram.setLayout(QLayout)

LevelsHistogram.setLayoutDirection(Qt.LayoutDirection)

LevelsHistogram.setLineWidth(int)

LevelsHistogram.setLocale(QLocale)

LevelsHistogram.setMask(QBitmap)

QWidget.setMask(QRegion)

LevelsHistogram.setMaximumHeight(int)

LevelsHistogram.setMaximumSize(int, int)

QWidget.setMaximumSize(QSize)

LevelsHistogram.setMaximumWidth(int)

LevelsHistogram.setMidLineWidth(int)

LevelsHistogram.setMinimumHeight(int)

LevelsHistogram.setMinimumSize(int, int)

QWidget.setMinimumSize(QSize)

LevelsHistogram.setMinimumWidth(int)

LevelsHistogram.setMouseTracking(bool)

LevelsHistogram.setObjectName(str)

LevelsHistogram.setPalette(QPalette)

LevelsHistogram.setParent(QWidget)

QWidget.setParent(QWidget, Qt.WindowFlags)

LevelsHistogram.setPlotLayout(layout)

Assign a new plot layout

Parameters:layout (qwt.plot_layout.QwtPlotLayout) – Layout

See also

plotLayout()

LevelsHistogram.setProperty(str, object) → bool

LevelsHistogram.setShortcutAutoRepeat(int, bool enabled=True)

LevelsHistogram.setShortcutEnabled(int, bool enabled=True)

LevelsHistogram.setShown(bool)

LevelsHistogram.setSizeIncrement(int, int)

QWidget.setSizeIncrement(QSize)

LevelsHistogram.setSizePolicy(QSizePolicy)

QWidget.setSizePolicy(QSizePolicy.Policy, QSizePolicy.Policy)

LevelsHistogram.setStatusTip(str)

LevelsHistogram.setStyle(QStyle)

LevelsHistogram.setStyleSheet(str)

LevelsHistogram.setTabOrder(QWidget, QWidget)

LevelsHistogram.setTitle(title)

Change the plot’s title

Parameters:title (str or qwt.text.QwtText) – New title

See also

title()

LevelsHistogram.setToolTip(str)

LevelsHistogram.setUpdatesEnabled(bool)

LevelsHistogram.setVisible(bool)

LevelsHistogram.setWhatsThis(str)

LevelsHistogram.setWindowFilePath(str)

LevelsHistogram.setWindowFlags(Qt.WindowFlags)

LevelsHistogram.setWindowIcon(QIcon)

LevelsHistogram.setWindowIconText(str)

LevelsHistogram.setWindowModality(Qt.WindowModality)

LevelsHistogram.setWindowModified(bool)

LevelsHistogram.setWindowOpacity(float)

LevelsHistogram.setWindowRole(str)

LevelsHistogram.setWindowState(Qt.WindowStates)

LevelsHistogram.setWindowTitle(str)

LevelsHistogram.set_active_item(item)

Override base set_active_item to change the grid’s axes according to the selected item

LevelsHistogram.set_antialiasing(checked)

Toggle curve antialiasing

LevelsHistogram.set_axis_color(axis_id, color)

Set axis color color: color name (string) or QColor instance

LevelsHistogram.set_axis_direction(axis_id, reverse=False)

Set axis direction of increasing values

• axis_id: axis id (BasePlot.Y_LEFT, BasePlot.X_BOTTOM, ...) or string: ‘bottom’, ‘left’, ‘top’ or ‘right’

• reverse: False (default)

  • x-axis values increase from left to right
  • y-axis values increase from bottom to top

• reverse: True

  • x-axis values increase from right to left
  • y-axis values increase from top to bottom

LevelsHistogram.set_axis_font(axis_id, font)

Set axis font

LevelsHistogram.set_axis_limits(axis_id, vmin, vmax, stepsize=0)

Set axis limits (minimum and maximum values)

LevelsHistogram.set_axis_scale(axis_id, scale, autoscale=True)

Set axis scale Example: self.set_axis_scale(curve.yAxis(), ‘lin’)

LevelsHistogram.set_axis_ticks(axis_id, nmajor=None, nminor=None)

Set axis maximum number of major ticks and maximum of minor ticks

LevelsHistogram.set_axis_title(axis_id, text)

Set axis title

LevelsHistogram.set_axis_unit(axis_id, text)

Set axis unit

LevelsHistogram.set_item_visible(item, state, notify=True, replot=True)

Show/hide item and emit a SIG_ITEMS_CHANGED signal

LevelsHistogram.set_items(*args)

Utility function used to quickly setup a plot with a set of items

LevelsHistogram.set_items_readonly(state)

Set all items readonly state to state Default item’s readonly state: False (items may be deleted)

LevelsHistogram.set_manager(manager, plot_id)

Set the associated plotpy.plot.PlotManager instance

LevelsHistogram.set_plot_limits(x0, x1, y0, y1, xaxis='bottom', yaxis='left')

Set plot scale limits

LevelsHistogram.set_pointer(pointer_type)

Set pointer.

Valid values of pointer_type:

• None: disable pointer
• “canvas”: enable canvas pointer
• “curve”: enable on-curve pointer

LevelsHistogram.set_scales(xscale, yscale)

Set active curve scales Example: self.set_scales(‘lin’, ‘lin’)

LevelsHistogram.set_title(title)

Set plot title

LevelsHistogram.set_titles(title=None, xlabel=None, ylabel=None, xunit=None, yunit=None)

Set plot and axes titles at once

• title: plot title
• xlabel: (bottom axis title, top axis title) or bottom axis title only
• ylabel: (left axis title, right axis title) or left axis title only
• xunit: (bottom axis unit, top axis unit) or bottom axis unit only
• yunit: (left axis unit, right axis unit) or left axis unit only

LevelsHistogram.show()

LevelsHistogram.showEvent(event)

Reimplement Qwt method

LevelsHistogram.showFullScreen()

LevelsHistogram.showMaximized()

LevelsHistogram.showMinimized()

LevelsHistogram.showNormal()

LevelsHistogram.show_items(items=None, item_type=None)

Show items (if items is None, show all items)

LevelsHistogram.signalsBlocked() → bool

LevelsHistogram.size() → QSize

LevelsHistogram.sizeHint()

Preferred size

LevelsHistogram.sizeIncrement() → QSize

LevelsHistogram.sizePolicy() → QSizePolicy

LevelsHistogram.stackUnder(QWidget)

LevelsHistogram.startTimer(int) → int

LevelsHistogram.statusTip() → str

LevelsHistogram.style() → QStyle

LevelsHistogram.styleSheet() → str

LevelsHistogram.testAttribute(Qt.WidgetAttribute) → bool

LevelsHistogram.thread() → QThread

LevelsHistogram.title()

Returns:Title of the plot

See also

setTitle()

LevelsHistogram.titleLabel()

Returns:Title label widget.

LevelsHistogram.toolTip() → str

LevelsHistogram.topLevelWidget() → QWidget

LevelsHistogram.tr(str, str disambiguation=None, int n=-1) → str

LevelsHistogram.trUtf8(str, str disambiguation=None, int n=-1) → str

LevelsHistogram.transform(axisId, value)

Transform a value into a coordinate in the plotting region

Parameters:

• axisId (int) – Axis index
• value (fload) – Value

Returns:

X or Y coordinate in the plotting region corresponding to the value.

LevelsHistogram.underMouse() → bool

LevelsHistogram.ungrabGesture(Qt.GestureType)

LevelsHistogram.unselect_all()

Unselect all selected items

LevelsHistogram.unselect_item(item)

Unselect item

LevelsHistogram.unsetCursor()

LevelsHistogram.unsetLayoutDirection()

LevelsHistogram.unsetLocale()

LevelsHistogram.update()

QWidget.update(QRect) QWidget.update(QRegion) QWidget.update(int, int, int, int)

LevelsHistogram.updateAxes()

Rebuild the axes scales

In case of autoscaling the boundaries of a scale are calculated from the bounding rectangles of all plot items, having the QwtPlotItem.AutoScale flag enabled (QwtScaleEngine.autoScale()). Then a scale division is calculated (QwtScaleEngine.didvideScale()) and assigned to scale widget.

When the scale boundaries have been assigned with setAxisScale() a scale division is calculated (QwtScaleEngine.didvideScale()) for this interval and assigned to the scale widget.

When the scale has been set explicitly by setAxisScaleDiv() the locally stored scale division gets assigned to the scale widget.

The scale widget indicates modifications by emitting a QwtScaleWidget.scaleDivChanged() signal.

updateAxes() is usually called by replot().

See also

setAxisAutoScale(), setAxisScale(), setAxisScaleDiv(), replot(), QwtPlotItem.boundingRect()

LevelsHistogram.updateCanvasMargins()

Update the canvas margins

Plot items might indicate, that they need some extra space at the borders of the canvas by the QwtPlotItem.Margins flag.

See also

getCanvasMarginsHint(), QwtPlotItem.getCanvasMarginHint()

LevelsHistogram.updateGeometry()

LevelsHistogram.updateLayout()

Adjust plot content to its current size.

See also

resizeEvent()

LevelsHistogram.updateLegend(plotItem=None)

If plotItem is None, emit QwtPlot.legendDataChanged for all plot item. Otherwise, emit the signal for passed plot item.

Parameters:plotItem (qwt.plot.QwtPlotItem) – Plot item

See also

QwtPlotItem.legendData(), QwtPlot.legendDataChanged

LevelsHistogram.updateLegendItems(plotItem, legendData)

Update all plot items interested in legend attributes

Call QwtPlotItem.updateLegend(), when the QwtPlotItem.LegendInterest flag is set.

Parameters:

• plotItem (qwt.plot.QwtPlotItem) – Plot item
• legendData (list) – Entries to be displayed for the plot item ( usually 1 )

See also

QwtPlotItem.LegendInterest(), QwtPlotItem.updateLegend()

LevelsHistogram.update_all_axes_styles()

Update all axes styles

LevelsHistogram.update_axis_style(axis_id)

Update axis style

LevelsHistogram.updatesEnabled() → bool

LevelsHistogram.visibleRegion() → QRegion

LevelsHistogram.whatsThis() → str

LevelsHistogram.width() → int

LevelsHistogram.widthMM() → int

LevelsHistogram.winId() → sip.voidptr

LevelsHistogram.window() → QWidget

LevelsHistogram.windowFilePath() → str

LevelsHistogram.windowFlags() → Qt.WindowFlags

LevelsHistogram.windowIcon() → QIcon

LevelsHistogram.windowIconText() → str

LevelsHistogram.windowModality() → Qt.WindowModality

LevelsHistogram.windowOpacity() → float

LevelsHistogram.windowRole() → str

LevelsHistogram.windowState() → Qt.WindowStates

LevelsHistogram.windowTitle() → str

LevelsHistogram.windowType() → Qt.WindowType

LevelsHistogram.x() → int

LevelsHistogram.y() → int