Does scikit-fem support a tensor field?

Hi,

I do have a feature request. Would it be possible that scikit-fem supports a simple creation of a tensor field in the future? I mean something like

skfem.element.element_vector.ElementTensor (and skfem.element.element_vector.ElementTensorSymmetric as an optional extension…)

based on the already implemented skfem.element.element_vector.ElementVector (skfem.element.ElementVectorH1) class? I think I can use 3 seperate vector fields als column vectors of a tensor but the above suggestion would greatly simplify the creation of such fields.

I would like to create such a field with 3x3=9 components in 3d space with

skfem.element.ElementTensor(skfem.element.ElementH1())

I hope i did not overlook something regarding that feature in the docs.

Thanks in advance!

[kinnala]

This was probably fixed in #574.

Edit: This fix will be part of the upcoming 3.0.0.

[adtzlr]

I just tried it with the master branch and the error is gone. Thanks!