Thanks for the report and helping us make Ubuntu better. Could be a packaging issue and the warnings generated while doing a "toggle_plplot_use" could be of importance. Confirming the issue and below are the warning verbatim.
octave3.0:2> toggle_plplot_use
warning: You may want to call
warning("off","Octave:built-in-variable-assignment");
to prevent spurious warnings from the plplot code for compatability with octave 2.0/2.1.
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
Use PLplot: on
Thanks for the report and helping us make Ubuntu better. Could be a packaging issue and the warnings generated while doing a "toggle_plplot_use" could be of importance. Confirming the issue and below are the warning verbatim.
octave3.0:2> toggle_plplot_use "off"," Octave: built-in- variable- assignment" );
warning: You may want to call
warning(
to prevent spurious warnings from the plplot code for compatability with octave 2.0/2.1.
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
warning: LOADPATH is no longer a built-in variable; please read the NEWS file or type `news' for details
Use PLplot: on