<div>I am not sure this could be a help for you or not. What I am doing is: I have a vector field data say 'Displacement' in anyone of legitimate paraview file formats. Then just open the file and click Stream Tracer. There are some options to set for the stream tracer. Of course there is the option for choosing integration types also. So, if you have your data already in paraview formats, it should not be difficult for you.
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<div>Cheers</div>