> I haven't worked with rectilinear grids in a while... but at least one structured-data PV representation accepts a blanking array. If you're going this route, make sure you have the latest ParaView (from git/master) which includes this fix [1] [1] https://gitlab.kitware.com/paraview/paraview/commit/bfcc2237d1aad43309177934272699653fe3a425