p4vasp is a visualization suite for the Vienna Ab-initio Simulation
Package (VASP). It contains an extensible GUI framework, that can be used to view
material structure, density of states, band-structure and more.
It provides a python library, that greatly simplifies
the process of manipulation of the VASP input and output data in python scripts.
P4vasp utilizes also many handy routines and objects e.g. for creating 2D graphs,
data storage (xml,DOM) or simple matrix library.

For the convenience, two packages are embedded in this distribution:
a slightly modified piddle package (http://piddle.sourceforge.net)
and the ODPdom library (http://www.sourceforge.net/projects/odpdom).
ODPdom a simple XML-DOM parser capable of reading large (~100MB) xml files.