From bug-request at octave dot org Wed Jan 26 21:24:57 2005
Subject: Re: surf()/mesh() broken ?
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: "Dmitri A. Sergatskov" <dmitri at unm dot edu>
Cc: bug at octave dot org, octave help mailing list <help@octave.org>
Date: Wed, 26 Jan 2005 22:29:12 -0500

On 20-Jan-2005, Dmitri A. Sergatskov <dmitri at unm dot edu> wrote:

| Emmanuel Vazquez wrote:
| > Bug report for Octave 2.1.64 configured for i386-pc-linux-gnu
| > 
| > Description:
| > -----------
| > 
| > Functions surf() and mesh() seem broken in the Debian packaged 2.1.64 
| > version of octave
| > 
| > For example
| > surf(peaks)
| > produces the following result on its first call
| > 
| > ----
| > sp '/tmp/oct-quoAnd' u 1:2:3 t "line 1"
| > ^
| > line 0: no functions or data to plot
| > ----
| > 
| > However the file '/tmp/oct-quoAnd' is present and is readable.
| > 
| 
| This is related to
| http://www.octave.org/octave-lists/archive/help-octave.2005/msg00070.html
| (that is why I x-posted to the "help" list, though the discussion should be
| in the "bug" list)
| 
| The command line for splot:
| 
| sp '/tmp/oct-quoAnd' u 1:2:3 t "line 1"
| 
| is wrong for the data file (it has only one column of data, hence "1:2:3" format is wrong)
| I do not know what has changed: data file format, or code that generates
| the command line for gnuplot...
| 
| It is definitely a bug.

Yep.

Please try the following patch.

Thanks,

jwe


src/ChangeLog:

2005-01-26  John W. Eaton  <jwe at octave dot org>

	* pt-plot.cc (handle_plot_data): Use the correct using clause for
	non-parametric 3D plots.


Index: src/pt-plot.cc
===================================================================
RCS file: /usr/local/cvsroot/octave/src/Attic/pt-plot.cc,v
retrieving revision 1.146
diff -u -r1.146 pt-plot.cc
--- src/pt-plot.cc	18 Oct 2004 16:27:44 -0000	1.146
+++ src/pt-plot.cc	27 Jan 2005 03:22:35 -0000
 at @ -760,7 +760,8 @@
 
 		      plot_buf << " '" << file << "' "
 			       << Vgnuplot_command_using
-			       << (ndim == 2 ? " 1:2" : " 1:2:3");
+			       << (ndim == 2 ? " 1:2"
+				   : (parametric_plot ? " 1:2:3" : " 1"));
 		    }
 		}
 	    }



-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------