plplot_octave FGA (frequently given answers): --Make sure that you have octave-2.0.16 or latter, matwrap and perl. Make sure that you have a correctly installed octave, configured with --enable-shared and --enable-dl. The command ldd `which octave` should report octave dynamic libs, liboctave.so, libcruft.so and liboctinterp.so --If you have problems, please try first to see if you can sucessefully compile and run the oregonator.cc and hello.cc files in the examples directory of the Octave distribution. If they don't run, fix first octave (configure with above options and reinstall). --If you have a problem with the Tk demos in the plplot distribution, probably your Xserver is not secure. Use 'xauth' or rebuild tk without security. But you don't need Tk (although useful); the default is to use the Xwindows driver. --The demos in the plplot_octave distribution should be run in the extracted directory from plplot_octave, as there are needed script files in directories misc, demos and PLplot. To run the plplot_octave demos, you must provide a LOADPATH that start at the current directory; being there. --There are problems with `semilogy, semilogx and loglog', -- there are no such thing as 'replot'. The equivalent, 'plreplot', does not do what you want. Also, 'title', 'xlabel' and 'ylabel' must be given *before* the plot command. The general idea is that plot attributes should be set before plotting the data. --In hold mode, the first plot defines the viewport, so further plots don't rescale the axis. --check that plplot_octave.oct find its shared libs, in case you have build plplot with shared libs. Try 'ldd ./plplot_octave.oct' and you will see either a list of needed and founded shared libs, or an error. In this case, you can specify where to find them using LD_LIBRARY_PATH or LD_RUN_PATH, or still recompiling plplot_octave.oct with the `-r' flag to gcc (this might vary with the OS). --The xwin driver does not respond to deiconify/resize events. This is a well know misfeature of plplot. --The xwin driver does not handle exposure events. If your plot window becomes obscured by other window, then, when you bring it to the front, (part) of your plot has vanished. Use 'plreplot' to refresh it. If you are using XFree, at least in version 3.3.3 you can start the Xserver with the '-wm' option; it will save obscured windows and you don't need to issue 'plreplot'. Also, the AfterStep window manager has an option for the same, I think that it is the `SaveUnders' one: # Miscellaneous voodoo commands - they may help you, they may not AppsBackingStore BackingStore SaveUnders Please keep reporting problems and how you solve them, Thanks, Joao