matplotlib
Matplotlib is a Python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms.
For simple plotting the pyplot module provides a MATLAB-like interface, particularly when combined with ipython. Official manuals
Overview
User's Guide
Matplotlib Examples
Thumbnail gallery
The Matplotlib FAQ
Subpages
various plots
Tutorials/Wikis
Tips
日本語化
See also