# What algorithm is used for Connectivity Filter

**URL:** https://discourse.paraview.org/t/what-algorithm-is-used-for-connectivity-filter/10327
**Category:** ParaView Support
**Created:** [September 15, 2022, 2:39pm UTC](https://discourse.paraview.org/t/what-algorithm-is-used-for-connectivity-filter/10327 "2022-09-15T14:39:11Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![kylebeggs](https://discourse.paraview.org/user_avatar/discourse.paraview.org/kylebeggs/32/7018_2.png) [@kylebeggs](https://discourse.paraview.org/u/kylebeggs)
#### Post date: [September 15, 2022, 2:39pm UTC](https://discourse.paraview.org/t/what-algorithm-is-used-for-connectivity-filter/10327/1 "2022-09-15T14:39:11Z")

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As the title says, I wish to know what algorithm the connectivity filter uses. Is there any way to find out or is it a custom Kitware algorithm?

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### Author: ![aron.helser](https://discourse.paraview.org/user_avatar/discourse.paraview.org/aron.helser/32/13_2.png) [@aron.helser](https://discourse.paraview.org/u/aron.helser)
#### Post date: [September 15, 2022, 3:07pm UTC](https://discourse.paraview.org/t/what-algorithm-is-used-for-connectivity-filter/10327/2 "2022-09-15T15:07:00Z")

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If you look in the ParaView source at the proxy XML, you can connect the GUI name in ParaView to a C++ class name. Searching for “Connectivity”, I find [this xml](https://gitlab.kitware.com/paraview/paraview/-/blob/master/Remoting/Application/Resources/filters_filterscore.xml#L290-292), which says the class used is [vtkConnectivityFilter](https://vtk.org/doc/nightly/html/classvtkConnectivityFilter.html). Hope that helps!