Hi - Have you considered including the package Veusz in the Viewing sub package?It's a nice and powerful GUI/Python module/command line based plotting package. It supports reading text, CSV, HDF5, FITS. It outputs PDF, EPS, SVG, bitmaps... See
https://packages.debian.org/sid/veusz http://home.gna.org/veusz/ (PS I'm upstream and help maintain the debian package in PAPT). Jeremy