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morph_stats: morphometric statistics extraction
***********************************************

The ``morph_stats`` application extracts morphometrics from a set of neuron morphology
files and produces a summary in JSON or CSV format. It may obtain any of the morphometrics available
in the :py:func:`neurom.get` function, and is highly configurable, allowing the user to get
raw or summary statistics from a large set of neurite and neuron features.

The functionality can be best explained by looking at a sample configuration file:

.. code-block:: yaml
    
    neurite:
        section_lengths:
            - max
            - total
        section_volumes:
            - total
        section_branch_orders:
            - max
    
    neurite_type:
        - AXON
        - APICAL_DENDRITE
        - BASAL_DENDRITE
        - ALL
    
    neuron:
        soma_radii:
            - mean


Here, there are two feature categories,

1. ``neurite``: these are morphometrics obtained from neurites, e.g. branch orders, section
   lengths, bifurcation angles, path lengths.
2. ``neuron``: these are morphometrics that can be applied to a whole neuron, e.g. the soma radius,
   the trunk radii, etc.

Each category sub-item (section_lengths, soma_radii, etc) corresponds to a
:py:func:`neurom.get` feature, and each one of its sub-items corresponds to a statistic, e.g.

* ``raw``: array of raw values
* ``max``, ``min``, ``mean``, ``median``, ``std``: self-explanatory.
* ``total``: sum of the raw values
  
An additional field ``neurite_type`` specifies the neurite types into which the morphometrics
are to be split. This is a sample output using the above configuration:

.. code-block:: json

    {
      "some/path/morph.swc":{
        "mean_soma_radius":0.17071067811865476,
        "axon":{
          "total_section_length":207.87975220908129,
          "max_section_length":11.018460736176685,
          "max_section_branch_order":10,
          "total_section_volume":276.73857657289523
        },
        "all":{
          "total_section_length":840.68521442251949,
          "max_section_length":11.758281556059444,
          "max_section_branch_order":10,
          "total_section_volume":1104.9077419665782
        },
        "apical_dendrite":{
          "total_section_length":214.37304577550353,
          "max_section_length":11.758281556059444,
          "max_section_branch_order":10,
          "total_section_volume":271.9412385728449
        },
        "basal_dendrite":{
          "total_section_length":418.43241643793476,
          "max_section_length":11.652508126101711,
          "max_section_branch_order":10,
          "total_section_volume":556.22792682083821
        }
      }
    }


For more information on the application and available options, invoke it with the ``--help``
or ``-h`` option.

.. code-block:: bash

    morph_stats --help

Features
********

.. runblock:: console

    $ morph_stats -l