The legacy vtk format (*.vtk) is often used as input to ParaView.
Note that the Glyph filter in ParaView requires vector values. Will the vtk files automatically output by MatLab not contain vector values? It would be clearer if you could share your vtk file.
If each component of the vector is output as a scalar value, you will need to convert them to vector values, e.g. with a Calculator filter: