From graphics-request at octave dot org Sun Nov 21 21:00:29 2004
Subject: Re: OctPlot ver 0.2.0 released
From: Rafael Laboissiere <rafael at debian dot org>
To: Shai Ayal <shaiay at yahoo dot com>
Cc: graphics at octave dot org, maintainers@octave.org
Date: Sun, 21 Nov 2004 13:57:42 -0600

* Shai Ayal <shaiay at yahoo dot com> [2004-11-21 21:31]:

> >2) Running the demo in README fails with the following error message:
> >
> >   octave:1> setup_octplot
> >   octave:2> h=plot(sin( (0:10000)/10000*2*pi),"b-");
> >   error: `octplot_command' undefined near line 40 column 10
> >   error: evaluating assignment expression near line 40, column 8
> >   error: evaluating for command near line 39, column 3
> >   error: called from `get' in file `/var/tmp/octplot/src/get.m'
> >   error: evaluating assignment expression near line 22, column 7
> >   error: called from `gcf' in file `/var/tmp/octplot/src/gcf.m'
> >   error: evaluating assignment expression near line 27, column 6
> >   error: called from `gca' in file `/var/tmp/octplot/src/gca.m'
> >   error: evaluating assignment expression near line 112, column 6
> >   error: called from `plot' in file `/var/tmp/octplot/src/plot.m'
> >   error: evaluating assignment expression near line 2, column 2
> >
> >   The patch attached below fixes the problem.
> 
> this runs ok with my 2.1.57. is this some feature of later releases tahe 
> end does not work in cells ? I fixed this in cvs since it will do no harm

Using end for indexing cells does not work here:

$ octave-config --version
2.1.63
$ octave -q
octave:1> a={1,2,3};
octave:2> a{end}
error: invalid use of end
error: evaluating argument list element number 1

If this did work in 2.1.57, then its failing in 2.1.63 is probably
unintended.  I am Cc:ing this message to octave-maintainers.

> Thanks for the contour algorithm. I am kind of hoping that OpenGL will 
> take care of me for 3D plots and shading. If not, I will turn to PLplot.
> 
> btw, how did you solve the problem of displaying rotated text fot the 
> axis labels ?

The xwin driver of PLplot uses its own Hershey fonts, which are generated by
regular plline commands.  No X11 fonts are used.

-- 
Rafael