Saving netgen output

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1

Hi!

Is it possible to save the video of the solution that is outputted in netgen? or tell netgen to screenshot the solution at each step?

I have a code similar to to the one given here(in terms of the output given) : 3.1 Parabolic model problem — NGS-Py 6.2.2302 documentation

I see in this itutorial that I can save VTK files at each step, but am not sure how to use these correctly.

Thanks,
Katie

2

Ive now seen this: Netgen snapshot from python - Kunena

and the solution in here is saving snapshots, but saves them a ppm files regardless of me giving it the required file type :
ngsolve.internal.SnapShot(“test.png”)

3

Hi,
for snapshots only ppm and jpg are supported. For more advanced visualization the vtk files can be read by for example paraview and videos can be created there.
Best
Christopher

4

Hi,

thanks for the reply! Ive just tried doing ngsolve.internal.SnapShot(“test.jpg”) instead but it still saves a ppm file (test.jpg.ppm)

Many thanks
Katie

5

Ah sorry I just saw, the installers are built without jpeg support… If you build from source you can enable it with the cmake argument -DUSE_JPEG=ON.
Best Christopher

6

Im using windows and am a bit of a novice when it comes to programming, so how do i do this?

Thanks
Katie

7

Instructions are here: Build on Windows — NGS-Py 6.2.2302 documentation
But maybe we can pack the jpeg support into the next installer, I’ll keep you updated. You could convert the ppm to jpg as well…
Best
Christopher