I have a 2D numpy array that I wish to export and write as a VTK file. I have tried the vtk package as well as PyEVTK package but am running into issues with both.
Thanks.
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2Welcome to Stack Overflow! Please take the tour, read what's on-topic here and How to Ask, and provide a minimal reproducible example. "Implement this feature for me" is off-topic for this site. You have to make an honest attempt, and then ask a specific question about your algorithm or technique.– StefanCommented Oct 17, 2020 at 6:09
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2 Answers
I believe this is what you're looking for:
from vtk.util import numpy_support
numpy_to_vtk(num_array, deep=0, array_type=None)
answered Oct 17, 2020 at 12:01
Serge de Gosson de VarennesSerge de Gosson de Varennes
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Thank you for the suggestion. I tried this but am unsure from here how to export the VTK array into an actual VTK file.– C-MathCommented Oct 17, 2020 at 17:16
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1Have you read this? vtk.org/Wiki/VTK/Writing_VTK_files_using_python Commented Oct 17, 2020 at 17:46
Is this what you asking for? It is easy to use but you have to know the connectivity of yourElements
import meshio
yourNodes = np.array([...])
yourElements = np.array([...])
cells = [("triangle", yourElements )]
mesh = meshio.Mesh(yourNodes , cells )
mesh.write("foo.vtk")
yourElements start at 0 and not at 1!
