Read FEniCS/Dolfin Meshes#

PyVista leverages meshio to read many mesh formats not natively supported by VTK including the FEniCS/Dolfin XML format. This example uses

from __future__ import annotations

import pyvista as pv
from pyvista import examples

Let’s download an example FEniCS/Dolfin mesh from our example data repository. This will download an XML Dolfin mesh and save it to PyVista’s data directory.

saved_file = examples.download_file("dolfin_fine.xml")

As shown, we now have an XML Dolfin mesh save locally. This filename can be passed directly to PyVista’s method to be read into a PyVista mesh.

dolfin =
N Cells5400
N Points2868
X Bounds0.000e+00, 1.000e+00
Y Bounds0.000e+00, 1.000e+00
Z Bounds0.000e+00, 0.000e+00
N Arrays0

Now we can work on and plot that Dolfin mesh.

qual = dolfin.compute_cell_quality()
qual.plot(show_edges=True, cpos="xy")
read dolfin

Total running time of the script: (0 minutes 0.314 seconds)

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