nipy/dipy — pull request #425 by Jan-Schreiber (2014-09-28 19:18:02+00:00)
Title: NF added class to save streamlines in vtk format

This is a class that provides to save streamlines (as generated e.g. with eudx) in the vtk file format.
Some features are:
- setting an affine transform to save the streamlines in the
data's coordinate system (rather than voxel coordinates)
- writing in ascii or binary file format
- saving colored streamlines for the local or global direction of the streamline
- decorating the streamlines with one value for every streamline (e.g. the streamline's length)
- decorating the streamline with a value for every vertex (e.g. the FA values)
- colors and decorations can be viewed e.g. with paraview (http://www.paraview.org/)
- errors are indicated by return code, no exceptions are thrown (or should I use exceptions?)

I am relatively new to python. So this is my initial project for dipy and a thorough review might be required.