The ygraph tool graphs one-dimensional data or displays a time-series of one-dimensional 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.
