# Transforming results to user-defined (local) coordinate systems

**URL:** https://discourse.paraview.org/t/transforming-results-to-user-defined-local-coordinate-systems/9387
**Category:** Feature Requests
**Created:** [April 7, 2022, 11:22am UTC](https://discourse.paraview.org/t/transforming-results-to-user-defined-local-coordinate-systems/9387 "2022-04-07T11:22:51Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![FEngineer](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/f/5f8ce5/32.png) [@FEngineer](https://discourse.paraview.org/u/FEngineer)
#### Post date: [April 7, 2022, 11:22am UTC](https://discourse.paraview.org/t/transforming-results-to-user-defined-local-coordinate-systems/9387/1 "2022-04-07T11:22:51Z")

</div>

Hi,

for finite element analyses it’s often very important to be able to transform the results (mainly stress, strain or displacement components) to user-defined (local) coordinate systems - rectangular, cylindrical or even spherical. This can be especially useful when parts such as pipes or pressure vessels are analyzed - then it’s often necessary to transform the results to cylindrical coordinate system. But there are also cases when user-defined rectangular coordinate system is needed. For example, the analysis of welds may require the transformation of stress components to coordinate system aligned with a face of the weld.

In this topic there was a discussion about the transformation of results to cylindrical coordinates and the conclusion was that it’s not possible at the moment:

> [@Transforming vector results to new coordinate system](https://discourse.paraview.org/t/transforming-vector-results-to-new-coordinate-system/8686):
>
> Hi, does ParaView have a built-in tool or filter to transform the vector field results (like stress or displacement components) to a user-specified coordinate system ? I’m particularly interested in the transformation to a cylindrical system. From what I’ve found in some old threads, Calculator filter could be used to manually transform the data (by proper mathematical operation). But is there a more automated and straightforward way to do this ? For example, let’s say that I have a model of a …

It would be great if such an option could be implemented in ParaView.