Yorick is an "Interpreted Scientific Programming Language"
[ftp://ftp-icf.llnl.gov/pub/Yorick/doc/index.html]
that reminds some users of "interpreted C with graphics".
It makes plotting easy.












Ytk 
[http://ytk.sourceforge.net]
exploits [Tk] (and [Expect]?!) to [GUI]fy Yorick.