## Sage plotting

Here are some python plotting engines/libraries:

- Older/not python dedicated:
Grace: grace, python interface

PLplot: http://www.plplot.org

opemath: Written by William Schelter and part of Maxima (thus also Sage) is a TCL/Tk plotting program which allows for interactive viewing. It has no separate download page. An example is this saddle:

`sage: maxima.eval("plot3d(2^(-u^2+v^2),[u,-1,1],[v,-1,1],[plot_format, openmath]);")`Dislin: dislin, disipyl (a python wrapper for dislin). It's license says dislin is "free for non-commercial use".

Pyqwt at http://pyqwt.sourceforge.net/ is a plotting package requiring QT. It seems to have some 3d capabilities http://pyqwt.sourceforge.net/pyqwt3d-examples.html.

matplotlib: http://matplotlib.sourceforge.net

Sage's plotting functionality is built on top of matplotlib, which is a very extensive plotting library with a user interface that is very similiar to Matlab's plotting. The interface that Sage provides to matplotlib is very Mathematica like.

There are also several links to plotting/graphics/data visualization programs at the scipy wiki.