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Add visual example for approx medial axis alg #10843

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DelazJ merged 2 commits into from
Mar 18, 2026
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Add visual example for approx medial axis alg #10843

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Add visual example for approx medial axis alg
hefniraera Mar 17, 2026
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hefniraera Mar 17, 2026
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Binary file added docs/user_manual/processing_algs/qgis/img/approxmedialaxis.png
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@DelazJ DelazJ Mar 17, 2026

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@hefniraera Thanks for addressing this issue. What do you think about using a less homogeneous/regular polygon feature? i.e, A feature whose width varies along the geometry, a kind of more complex polygon, to avoid the output look almost like buffer(geom, -w/2)?

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9 changes: 7 additions & 2 deletions docs/user_manual/processing_algs/qgis/vectorgeometry.rst
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Expand Up @@ -404,7 +404,7 @@ Python code
:end-before: **end_algorithm_code_section**


.. _qgisapproximatedmedialaxis:
.. _qgisapproximatemedialaxis:

Approximate medial axis
-----------------------
Expand All @@ -420,6 +420,11 @@ of input geometries.
.. attention:: Running this algorithm requires QGIS installed with SFCGAL_ >= 2.0
(see :menuselection:`Help --> About` menu).

.. figure:: img/approxmedialaxis.png
:align: center

Medial axis (red line) of a polygon layer

Parameters
..........

Expand Down Expand Up @@ -468,7 +473,7 @@ Outputs
Python code
...........

**Algorithm ID**: ``native:approximatedmedialaxis``
**Algorithm ID**: ``native:approximatemedialaxis``

.. include:: ../algs_include.rst
:start-after: **algorithm_code_section**
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