yPlot (http://yplot.sourceforge.net/) is the yorick (http://yorick.sourceforge.net/) interface to PLplot (http://plplot.sourceforge.net/), the powerful scientific plotting library. The principal change for yPlot-1.1.3 is it has been updated to work with yorick-1.5.14 (the standard yorick version deployed on all modern versions of Debian and Ubuntu.) Testing also shows yPlot-1.1.3 works well with the recently released PLplot-5.6.1. N.B. Because the python/Numeric interface to PLplot provides all the high-level array functionality that is available with yorick and has the full PLplot API implemented, I recommend that interface over yPlot. However, for legacy use it is still worthwhile to keep yPlot maintained so that is the motivation behind the current release.
See http://sourceforge.net/project/showfiles.php?group_id=15416 to gain access to this latest version of yPlot.