A preliminary xdatplot-0.4alpha is now availble.  The main difference
from 0.3 is that 0.4 builds and runs on SGI IRIX.  (You're also likely
to have better luck building from source on other platforms.)  0.4 is
still changing fast.  Get the latest version (source, SunOS binaries,
or IRIX binaries) from eatworms.swmed.edu.