# Displaying azimuthal information with a cyclic colormap
**URL:** https://discourse.paraview.org/t/displaying-azimuthal-information-with-a-cyclic-colormap/12830
**Category:** ParaView Support
**Created:** [September 7, 2023, 8:40pm UTC](https://discourse.paraview.org/t/displaying-azimuthal-information-with-a-cyclic-colormap/12830 "2023-09-07T20:40:12Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Art-MC](https://discourse.paraview.org/u/Art-MC)
#### Post date: [September 7, 2023, 8:40pm UTC](https://discourse.paraview.org/t/displaying-azimuthal-information-with-a-cyclic-colormap/12830/1 "2023-09-07T20:40:13Z")
Hello,
I am working with 3D vector data, and I want to show some stream plots with the color corresponding to the azimuth angle. I can use the calculator and atan2 to calculate the azimuth [-pi, pi], and with cyclic colormap this looks alright in most areas. The issue is that the stream plot interpolates between -pi and pi, the value is ~0, meaning the color is incorrect.
Is there a way to alter the stream plot interpolation parameters? Or effectively include periodic boundary conditions on the azimuth?
Thanks
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### Author:  [@chicheng](https://discourse.paraview.org/u/chicheng)
#### Post date: [November 29, 2023, 7:02pm UTC](https://discourse.paraview.org/t/displaying-azimuthal-information-with-a-cyclic-colormap/12830/2 "2023-11-29T19:02:59Z")
Hi,
I’m having a similar problem except I’ve created a contour plot and I’ve colored the surface by a value which ranges from [-pi, pi]. I used the hsv colormap which is cyclic so the end points -pi and pi are the same color. However there are points where I have values of -pi and pi next to each other and paraview colors the surface between a color in the middle of the colormap not the color at the end points.
Does anyone have a solution for plotting with cyclic colormaps which avoids this issue?
Thanks