Tecplot’s Meshgen addon was the recommended way to create the grid needed to contour test data, spreadsheet-calculations, etc. You don’t have to use Meshgen, though: this video shows a Python program that reads a 2D region from a CSV file and uses Gmsh to create the mesh. Contact us if you want to take this further for your own use: the Python program can quite easily be extended to process – for example – DXF files.