.. _pruneskeleton:

pruneskeleton
*************


**Syntax:** :code:`pruneskeleton(vertices, edges, edge measurements, edge points, maximum length, disconnect straight-through nodes, remove isolated nodes)`

Prunes a traced skeleton. Removes all edges that end in a node with no other branches connected to it (degree = 1) and whose length is less than specified value.

This command cannot be used in the distributed processing mode. If you need it, please contact the authors.

Arguments
---------

vertices [input & output]
~~~~~~~~~~~~~~~~~~~~~~~~~

**Data type:** float32 image

Image where vertex coordinates are stored. See :ref:`tracelineskeleton` command.

edges [input & output]
~~~~~~~~~~~~~~~~~~~~~~

**Data type:** uint64 image

Image where vertex indices corresponding to each edge are stored. See :ref:`tracelineskeleton` command.

edge measurements [input & output]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

**Data type:** float32 image

Image where properties of each edge are stored. See :ref:`tracelineskeleton` command.

edge points [input & output]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

**Data type:** int32 image

Image that stores some points on each edge. See :ref:`tracelineskeleton` command.

maximum length [input]
~~~~~~~~~~~~~~~~~~~~~~

**Data type:** real

Edges shorter than this are pruned if they are not connected to other edges in both ends.

disconnect straight-through nodes [input]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

**Data type:** boolean

If set to true, all straight-through nodes (nodes with degree = 2) are removed after pruning. This operation might change the network even if no edges are pruned.

remove isolated nodes [input]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

**Data type:** boolean

If set to true, all isolated nodes (nodes with degree = 0) are removed after pruning. This operation might change the network even if no edges are pruned.

See also
--------

:ref:`cleanskeleton`, :ref:`pruneskeleton`, :ref:`removeedges`, :ref:`fillskeleton`, :ref:`getpointsandlines`