Hi, the data points of my sun path study show in a normal scale on the rhino viewport, but are so small they are almost invisible once I print them to pdf or to jpg. Any tips on how to make them print normally?
Instead of points you probably want to define spheres, where you can control their size.
In grasshopper, I use cloud display to control size and colour of sun locations on solar paths.
You may also want to look into export resolutions for correct visual representations in exported documents.
Resolutions higher than your viewport dimensions show up finer in the export than Rhino display.