From bug-request at octave dot org Fri Jan 13 15:17:29 2006
Subject: 2.9.4: clearplot not working with "hold on"
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: =?ISO-8859-1?Q?Gerd_B=FCrger?= <buerger at pik-potsdam dot de>
Cc: bug at octave dot org
Date: Fri, 13 Jan 2006 16:17:16 -0500

On 20-Dec-2005, Gerd Bürger wrote:

| with 2.9.4, the following series of commands does not what it is 
| supposed to do (?):
| 
| hold on
| plot(rand(100,1))
| clearplot
| plot(rand(100,1))
| 
| as I now see 2 lines.

Please try the following patch (relative to the current CVS sources).
I think this makes clearplot behave more like Matlab's clf function,
which seems to turn the hold state off.

jwe


Index: src/ChangeLog
===================================================================
RCS file: /cvs/octave/src/ChangeLog,v
retrieving revision 1.1325
diff -u -r1.1325 ChangeLog
--- src/ChangeLog	13 Jan 2006 19:25:43 -0000	1.1325
+++ src/ChangeLog	13 Jan 2006 21:15:02 -0000
 at @ -1,5 +1,14 @@
 2006-01-13  John W. Eaton  <jwe at octave dot org>
 
+	* DLD-FUNCTIONS/__gnuplot_raw__.l (Fclearplot): For compatibility,
+	also turn off hold state for current figure.
+
+2006-01-13  Bill Denney  <bill at givebillmoney dot com>
+
+ 	* dirfns.cc: Add  at seealso{} to docstrings.
+
+2006-01-13  John W. Eaton  <jwe at octave dot org>
+
 	* help.cc (display_help_text): Use warning() to print raw Texinfo
 	source.  Don't redirect error output for makeinfo process.
 
Index: src/DLD-FUNCTIONS/__gnuplot_raw__.l
===================================================================
RCS file: /cvs/octave/src/DLD-FUNCTIONS/__gnuplot_raw__.l,v
retrieving revision 1.2
diff -u -r1.2 __gnuplot_raw__.l
--- src/DLD-FUNCTIONS/__gnuplot_raw__.l	13 Jan 2006 19:25:43 -0000	1.2
+++ src/DLD-FUNCTIONS/__gnuplot_raw__.l	13 Jan 2006 21:15:03 -0000
 at @ -1693,6 +1693,12 @@
 {
   gnuplot::clear ();
 
+  octave_value_list args;
+
+  args(0) = "off";
+
+  feval ("hold", args);
+
   return octave_value_list ();
 }
 



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