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How to create 2D vector flow field from components in 2 different .vtk files in Paraview?

I am rather new to Paraview and have been reading a bit about vector plotting techniques to indicate flow direction and velocity magnitudes. I am quite stuck, however, with my 2 files.

These are both .vtk files of the magnitude of the x and y components of a surface velocity field of a glacier. What I would like in the end is just a field of arrows which point in the direction of the flow and whose size correlates to the velocity magnitude. I have read about stream tracer but it stays greyed out for me. I wonder if anybody can help me or at least give me some guidance about how this can be done. Thanks!

x component: veloc_x.vtk - https://drive.google.com/file/d/1VpFKe_my_Ep0rt80CIcw4B8xNi3AwiSE/view?usp=sharing

y component: veloc_y.vtk - https://drive.google.com/file/d/1eP4FgSZMO-bEZQJzKSbLuTl90zxbxlsh/view?usp=sharing

Solution

  • The steps are as following:

    1. load both files
    2. select them, use Append Attributes filter
    3. Merge Vector Components to put X and Y in a vector.

    You may want to use Calculator to create a Z array containing only 0 before step 3. because Merge Vector expect 3 components.

    Then use the Glyph representation to setup the arrows in the vector field.