# Velocity not available for Coloring of Glyph - Potential bug or a feature?

**URL:** https://discourse.paraview.org/t/velocity-not-available-for-coloring-of-glyph-potential-bug-or-a-feature/1087
**Category:** Development
**Created:** [December 27, 2018, 8:14pm UTC](https://discourse.paraview.org/t/velocity-not-available-for-coloring-of-glyph-potential-bug-or-a-feature/1087 "2018-12-27T20:14:44Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![JuliusNepos](https://discourse.paraview.org/user_avatar/discourse.paraview.org/juliusnepos/32/3237_2.png) [@JuliusNepos](https://discourse.paraview.org/u/JuliusNepos)
#### Post date: [April 21, 2020, 7:18pm UTC](https://discourse.paraview.org/t/velocity-not-available-for-coloring-of-glyph-potential-bug-or-a-feature/1087/3 "2020-04-21T19:18:47Z")

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I suppose I should call them Glyphs now. Anyhow, running XUbuntu 18.04, 64bit (a LTS) with ParaView 5.6.0. Actually it’s ParaFoam but I think the app is pretty much the same thing.

For a 2-D model: the OpenFoam lid driven cavity tutorial 2.1.  
I encountered the error in that Velocity Vectors cannot be colored with Velocity: only with Pressure. I can display countours of Velocity so I guess this means the data set is fully loaded.

This question was previously asked with ParaView 4.1 (2014) but has persisted to ParaView 5.6 and possibly 5.8 now.

A link to that post from Sept, 2014 is:  
[https://www.cfd-online.com/Forums/paraview/141308-bug-paraview-4-1-0-64bit.html](https://www.cfd-online.com/Forums/paraview/141308-bug-paraview-4-1-0-64bit.html)  
Wyldkat provides a workaround to use a Calculator filter in the middle. I’ve tried this and the Calculator Results still are not displayable. I’ll attach a screenshot:

 ![Paraview_no-vvs_1000px_annotated](https://discourse.paraview.org/uploads/default/original/2X/b/b535cb36f7ead88cfb9834906422b4863c5a3a3d.jpeg)

For the Calculator I tried using the U as a Result accoring to the Scalers:  
Attrib. type: point data  
Result: sqrt(U\_X^2+U\_Y^2+U\_Z^2)

since I really have a 2-D model I also tried  
Result: sqrt(U\_X^2+U\_Y^2)

Neither worked. I also downloaded the ParaView 5.8 but I notice that a user at CFD-online that it has the exact same problem so I haven’t fooled with it yet.

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