ygraph 0.15-3ubuntu1 (lpia binary) in ubuntu gutsy

 The ygraph tool visualizes one-dimensional scientific data sets. It is
 an enhanced alternative to the xgraph utility and supports the same
 input format as xgraph. Additionally, ygraph features:
 .
  * animating multiple plots simultaneously and synchronously;
  * stepping back and forth through animations one frame at a time;
  * zooming, similar to xgraph but without opening a lot of new windows;
  * plotting derivatives;
  * subtracting plots;
  * convergence tests;
  * reading compressed files;
  * exporting images and animations.