I assume that you could write the files to disk and that they are not empty (Check with a text editor). Did you also added e.g. Glyphs to the points after loading the file to paraview?
Furthermore. The camera position doesn’t always show right part. Center the camera to the data set.
I am a new user of espressomd. I have written a\ python script for simulating nanoparticles and red blood cells. I plan to visualize results in paraview. For visualizing NPs as points, I used "system.part.writevtk("output_sim" + str(simNo) + "/p_" + str(i) + ".vtk", types=)". However, when I use paraview, paraview cannot visualize NPs/points. Could you please let me know what I should do?