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comparison scripts/plot/__gnuplot_version__.m @ 11754:a7a4090cf532 release-3-0-x

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__gnuplot_version__: use newline at end of message
author John W. Eaton <jwe@octave.org>
date Wed, 16 Apr 2008 15:15:26 -0400
parents 5cedea7a0fdd
children 7d6e659acc1a 7cc783e52ddb
comparison
equal deleted inserted replaced
11753:5cedea7a0fdd 11754:a7a4090cf532
27 persistent __version__ = ""; 27 persistent __version__ = "";
28 28
29 if (isempty (__version__)) 29 if (isempty (__version__))
30 [status, output] = system (sprintf ("%s --version", gnuplot_binary ())); 30 [status, output] = system (sprintf ("%s --version", gnuplot_binary ()));
31 if (status != 0) 31 if (status != 0)
32 error ("you must have gnuplot installed to display graphics; if you have gnuplot installed in a non-standard location, see the 'gnuplot_binary' function"); 32 ## This message ends in a newline so that the traceback messages
33 ## are skipped and people might actually see the message, read it,
34 ## comprehend it, actually take the advice it gives, and stop
35 ## asking us why plotting fails when gnuplot is not found.
36 error ("you must have gnuplot installed to display graphics; if you have gnuplot installed in a non-standard location, see the 'gnuplot_binary' function\n");
33 endif 37 endif
34 pattern = "^[^\\s]*\\s*([0-9]+\\.[0-9]+)\\s*[^\\s]*\\s*([^\\s]*)"; 38 pattern = "^[^\\s]*\\s*([0-9]+\\.[0-9]+)\\s*[^\\s]*\\s*([^\\s]*)";
35 [d1, d2, d3, d4, matches] = regexp (output, pattern); 39 [d1, d2, d3, d4, matches] = regexp (output, pattern);
36 if (iscell (matches) && numel (matches) > 0 && iscellstr (matches{1})) 40 if (iscell (matches) && numel (matches) > 0 && iscellstr (matches{1}))
37 __version__ = matches{1}{1}; 41 __version__ = matches{1}{1};