allow zooming for logscale plots * graphics.cc (axes::properties::zoom_about_point): Allow zooming for logscale axes. * graphics.h.in (class neg_log_scaler): New class. (log_scalar::do_neg_scale): Delete (log_scalar::scale): Don't attempt to handle negative data. (axes::properties::get_scale): New function. (axes::properties::update_xscale, axes::properties::update_yscale, axes::properties::update_zscale): Use it. (axes::properties::update_xlim): Call update_xscale. (axes::properties::update_ylim): Call update_yscale. (axes::properties::update_zlim): Call update_zscale.

Octave PROJECTS
===============

A list of proposed projects is maintained at: 
             
             http://wiki.octave.org/wiki.pl?Projects

If you start working steadily on a project, please let
maintainers@octave.org know.  We might have information that could help
you.  You should also read the Contributing Guidelines chapter in the
Octave manual.