I created a vtu file, which originally was csv-like file, its format: x y z + point data. However, when trying to do volume rendering, I encountered error: vtkOpenGLProjectedTetrahedraMapper (000002413E153CE0): Encountered non-tetrahedra cell!
How can I fixed this problem except doing interpolator? Doing this will lose some high frequency information. And is the method paraview use is pre-integrated transfer function? Someone told me this generate higher quality result than other method.Thanks!
Your dataset contains only points with all the same scalars values.
You cannot volume render this.
You can convert your points into a volumic datasets using Delaunay3D filter, that will fix your initial issue, but your data is still identical everywhere, which cant be volume renderered.
sorry, that part was too small to show the differences, this is a larger samplemine2.vtu (3.7 MB)
And the original one has over 10 million points, is delaunay3d possible to produce result? Or are there lighter way?