tile_raster_images(X,
img_shape,
tile_shape,
tile_spacing=(0, 0),
scale_rows_to_unit_interval=True,
output_pixel_vals=True)
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Transform an array with one flattened image per row, into an array in
which images are reshaped and layed out like tiles on a floor.
This function is useful for visualizing datasets whose rows are
images, and also columns of matrices for transforming those rows (such as
the first layer of a neural net).
:type X: a 2-D ndarray or a tuple of 4 channels, elements of which can
be 2-D ndarrays or None; :param X: a 2-D array in which every row is a
flattened image.
:type img_shape: tuple; (height, width) :param img_shape: the original
shape of each image
:type tile_shape: tuple; (rows, cols) :param tile_shape: the number of
images to tile (rows, cols)
:param output_pixel_vals: if output should be pixel values (i.e. int8
values) or floats
:param scale_rows_to_unit_interval: if the values need to be scaled
before being plotted to [0,1] or not
:returns: array suitable for viewing as an image.
(See:`PIL.Image.fromarray`.) :rtype: a 2-d array with same dtype as
X.
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