I'm currently running a CFD simulation for an internal flow and need to compare my computed results to experimental data. The experimental data is saved as a comma separated file with columns for x,y,z coordinates and pressure. The computed data is saved in Ensight format on an unstructured 3D mesh.As an example, I have the following experimental data:-0.08573,0.00000,0.09154,83600.0-0.08573,0.00000,0.08154,83610.0etc.I would like to plot the pressure along the y-axis at x=-0.08573 as a function of z, and overlay crosshairs to show the experimental data. I can create the two plots separately, using the Plot Over Line filter for the CFD data, and the Plot Data filter for the experimental data.I have tried using the Group Datasets filter to combine the two sources, but when I try to plot I run into problems. If I use Plot Over Line, the experimental data doesn't show in the plot. I think this is due to rounding in the coordinates for the line vs. the data.If I use Plot Data, I can get both to show up, but only if I set the X axis data to Use Array Index From Y Axis Data. When I do this, the experimental data aren't plotted over the correct part of the CFD data. Switching to Use Data Array and Points(2) for the z-coordinates, I get an error No X column is set (index 0).This seems like it should be a simple thing to accomplish, and a fairly common task, but I've had no luck finding a tutorial or explanation online. I know that I can just export the data and use gnuplot or xmgrace, but I would rather do all the processing in one program if possible.
Create 2D plot from two data sets in ParaView
fluid dynamics;visualization