Warning when plotting Dolfin subspace

[RuruX]

Hi Marco,

I got a warning when trying to plot the subspace of a mixed function and it only showed this empty window:

The warning information is:

Warning: no objects to show, check mode in plot(mode="...")

However, when I tried to plot w.sub(0) instead of u_mid, where u_mid,theta=split(w), it works fine. The strange thing is, sometimes u_mid can work too but I cannot tell when it should work. Here is the right plot I got from plot(w.sub(0)):

Please have a look at the minimal test code and the mesh file attached below, and let me know if you can reproduce the same results. vedo_test.zip

[marcomusy]

Thanks Ru for the detailed description of the issue, if I understand there should be no difference between w.sub(0) and u_mid (correct?), so the vedo parsing must be missing the latter.. maybe is being wrapped into some other object.. i need to investigate it!

[RuruX]

Hi Marco,

Thanks for your reply! Yeah they should be the same mathematically. Please let me know if you have any findings.

Best, Ru

On Fri, Apr 2, 2021 at 3:49 PM Marco Musy @.***> wrote:

Thanks Ru for the detailed description of the issue, if I understand there should be no difference between w.sub(0) and u_mid (correct?), so the vedo parsing must be missing the latter.. maybe is being wrapped into some other object.. i need to investigate it!

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