
Ruby/pgplot is the ruby interface to the pgplot graphics library. pgplot is a fortran library to draw line/scatter/histogram plot, error bar, contour/image/vector map, etc. supports various output devices including postscript, png, x-window, etc.
this package is provided primarily to provide a backtrace with names in a debugger, this makes it somewhat easier to interpret core dumps. most people will not need this package.