Debug plotting issues

THIS PAGE IS A STUB

This page should help with debugging plotting and printing issues and to collect important information which should be included into bugreports or when asking on the mailinglist.

Basics

Octave version: Execute 'ver' in Octave and copy it verbatim. If you are on Windows mention which build (MinGW, Cygwin, MXE, Visual Studio see http://wiki.octave.org/Octave_for_Microsoft_Windows) and where did you get it?

Operating system:
- Windows: Is it XP 32bit or 64bit? Windows 7 or 8?
- GNU/Linux: Have you installed Octave using your package system (apt-get, yum..) or via tarball?

If you get a warning on startup, for example "warning: function xyz.m shadows a built-in function" please copy it verbatim

If you get an error message, please copy the message verbatim

I can't plot or print or the output doesn't look as expected

Please create a simple, as small as possible example which shows the problem so others can reproduce the problem on their system and help you. Upload a screenshot (together with the script) if you can't describe it with words.

Which toolkit are you using? Execute 'graphics_toolkit' in octave to query it. Common toolkits are 'fltk' or 'gnuplot'. Consider switching to another available toolkit (see available_graphics_toolkits) and try it there. You have to execute (for example switch to gnuplot) 'graphics_toolkit gnuplot' before any plotting command.

Which Ghostscript version? Is it a 32 or 64bit build? Please add URL to download. If 64bit under Windows see http://wiki.octave.org/Octave_for_Microsoft_Windows#Printing_.28installing_Ghostscript.29

printing with gnuplot

Try

 print("testplot.eps", "-debug")

and attach the generated octave-print-commands.log, debug message and testplot.eps.

printing with fltk

A common problem is that printing with fltk only works if the figure is visible, see [1]

some Windows issues

A user had problems printing with fltk in windows. After he updated the graphic drivers the problem was gone. http://octave.1599824.n4.nabble.com/Problem-with-Print-under-Octave-3-8-1-under-windows-tp4664755.html