I have been using Paraview for years for our visualisations and always loaded my vti file, apply a Slice, choose the colour to be defined by the array in our vti file and set it to SurfaceLIC representation. Today I downloaded Paraview 5.9 RC3 for Linux but I get the error:
ERROR: In /builds/gitlab-kitware-sciviz-ci/build/superbuild/paraview/src/VTK/Common/ExecutionModel/vtkAlgorithm.cxx, line 484
vtkCompositeSurfaceLICMapper (0x1a0b6c10): Attempt to get an input array for an index that has not been specified
Have there been any changes to the implementation that require us to change our vti files?
Sorry about the tardy reply. I managed to solve the issue with a slice through the domain, and now can visualize the Surface LIC. The issue I had was with Surface LIC not working on all the surfaces of the domain (walls and periodic faces).