Veusz

Veusz is a scientific plotting application. Veusz is an open source, cross-platform software project. It allows the users to create PDF and Postscript output. It supports user defined functions and constants. It creates the XY plots, line graphs, histograms, shapes, etc. It also analyses GUI, command line and scripting interfaces. It is a Qt application written in Python, PyQt and NumPy designed to produce publication-quality plots. This application produces plots in vector formats like PDF, PostScript and SVG.