I managed to get PATHWORKS running on a Windows NT 4.0 VM last night and noticed that it came with Excursion, a rather good X server for Win32.
Anyway, I used that to log into RHESUS, launched a DECterm and ran gnuplot with ReGIS as output. The results are quite nifty I’m sure you’ll agree:
Here’s another one with ReGIS and SIXEL (DEC-specific bitmap format graphics), still in DECterm:

