OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Error in GNUplot & image data › Reply To: Error in GNUplot & image data June 17, 2021 at 11:11 pm #5734 AdrianKeymaster You can change the gnuplot command in src/io/gnuplotHeadMapWriter.hh:247 respectively src/io/gnuplotWriter.hh:337. For your example the latter should be the relevant one.