I have a Unstructured Grid VTK legacy file which is read using Python and the velocity calculated and stored as a Numpy array. I am looking to firstly export the array to its own VTK file for use in Paraview.
Writing VTK file from Python for use in Paraview
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Your
VTK_datais, as the error said, avtkFloatArray. It does not have aGetOutput()method and it cannot be written as an UnstructuredGrid.You have to add your array to your dataset
dataand then you can writedatawith the writer: