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[Pkg-octave-devel] Bug#408992: marked as forwarded (octave2.9: Plot with convert sometimes doesn't work (race condition?))

Your message dated Sun, 4 Feb 2007 19:10:21 +0100
with message-id <20070204181021.GC13328@laboissiere.net>
has caused the Debian Bug report #408992,
regarding octave2.9: Plot with convert sometimes doesn't work (race condition?)
to be marked as having been forwarded to the upstream software
author(s) bug@octave.org.

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Debian bug tracking system administrator
(administrator, Debian Bugs database)
--- Begin Message --- 
package octave2.9
tags 408992 confirmed upstream pending
thanks

Please, find below a bug report filed against the octave2.9 Debian package
(http://bugs.debian.org/408992).  I confirm the problem.  Attached below is
a patch that fixes the bug and that I am currently applying to the octave2.9
package in Debian.

Rafael


* Reuben Thomas <rrt@sc3d.org> [2007-01-29 20:09]:

> Package: octave2.9
> Version: 2.9.9-6
> Severity: normal
> 
> With the following script: (I don't think the details are important)
> 
> clear
> x = randn(65536, 1);
> x = x / max(abs(x));
> XR = 20*log10(abs(fft(2*hanning(65536).*x(1:65536), 65536)));
> XP = 20*log10(abs(fft(2*hanning(65536).*x(1:65536), 65536)));
> XS = 20*log10(abs(fft(2*hanning(65536).*x(1:65536), 65536)));
> w = [0:65535]/65536 * 44100;
> plot(w, XR, w, XP, w, XS)
> hold on
> axis([0 22050 -100 80])
> text(5000, -50, '4 kHz: Upper Limit of Data');
> legend('Rabbit','Polyphase','Resample')
> plot([4000 4000], [-100 80], 'g')
> plot([44100 - 4000 44100 - 4000], [-100 80], 'g');
> title('Rate Convert From 8 kHz to 44.1 kHz Of Random Noise');
> ylabel('Magnitude of Spectrum in dB')
> xlabel('Frequency in kHz');
> xlabel('Frequency in Hz');
> hold off
> print RandomNoiseUpsample.ppm
> 
> I usually (but not always) get this error:
> 
> error: Did not find ppm
> error: evaluating if command near line 90, column 5
> error: evaluating if command near line 88, column 3
> error: evaluating for command near line 76, column 1
> error: called from `cellidx' in file `/usr/share/octave/2.9.9/m/control/system/cellidx.m'
> error: evaluating assignment expression near line 206, column 7
> error: called from `print' in file `/usr/share/octave/2.9.9/m/plot/print.m'
> error: near line 20 of file `foo.m'
> 
> If I don't involve convert (because I ask for .pbm output) I never get
> the error.


--- orig/print.m	2007-02-04 18:35:32.000000000 +0100
+++ fixed/print.m	2007-02-04 18:49:27.000000000 +0100
@@ -203,7 +203,7 @@
   dev_list = {"aifm" "corel" "fig" "png" "pbm" "dxf" "mf" "hpgl", ...
 	      "ps" "ps2" "psc" "psc2" "eps" "eps2" "epsc" "epsc2" "emf"};
   convertname = "";
-  idx = cellidx (dev_list, dev);
+  [idx, errmsg] = cellidx (dev_list, dev);
   if (! idx)
     if (! isempty (devopt))
       convertname = strcat (devopt, ":", name);

--- End Message ---
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