OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Extract velocity, pressure, and density data on lattices without interpolation › Reply To: Extract velocity, pressure, and density data on lattices without interpolation August 13, 2021 at 7:45 pm #5921 achodankarParticipant Hello Julius, I can manage the csv file format. I don’t understand the part of how to extract the values from functors. From example: After defining this statement, SuperLatticeVelocity2D<T, DESCRIPTOR> velocity_lat( sLattice); Normally in arrays, I access the values using the index, but I am not aware how to go about it with functors. This has been a bottleneck issue for me presently. Thank you. Yours sincerely, Abhijeet C.