VTK .vtu file format

December 21, 2022

Numerous programs can write data in VTK file formats accessible from VTK-compatible programs such as ParaView. One of these format is “.vtu”. Adaptive Mesh Refinement (AMR) library ForestClaw has its own routines to write VTK data.

The base 2D VTK writing is done in “forestclaw/src/patches/clawpatch/fclaw2d_clawpatch_output_vtk.c”. The function “fclaw2d_vtk_write_header()” writes the XML header for UnstructuredGrid.