Mercurial > octave-nkf
view scripts/plot/private/__gnuplot_version__.m @ 16108:3cce6b4e0f7c
Update gnuplot plotting scripts for faster or more modern synta
* scripts/plot/__gnuplot_drawnow__.m: Use default values in function header.
Check number of arguments to function immediately. Use single quotes to
avoid lots of backslashing. Use strtok() to replace hand-coded functionality.
Initialize persistent variables in declaration (10% faster).
* scripts/plot/gnuplot_binary.in: Replace tabs with spaces. Simplify input
validation. Add %!test block.
* scripts/plot/private/__gnuplot_get_var__.m: Use default values in function
header. Use "*char" in fread to automatically convert to char variable.
* scripts/plot/private/__gnuplot_ginput__.m: Check immediately for required
version of gnuplot. Use "*char" in fread to automatically convert to char
variable. Use fputs in place of fprintf to match rest of code.
* scripts/plot/private/__gnuplot_has_feature__.m: Initialize persistent varibles
in declaration. Use false () rather than logical (zeros()) construction.
* scripts/plot/private/__gnuplot_has_terminal__.m: Use strtok() to replace
hand-coded functionality
* scripts/plot/private/__gnuplot_print__.m: Replace sprintf calls with direct
string char matrix concatenation (2.4x faster) where possible. Replace for
loop with multiple argument form of set(). Use single quotes to avoid lots
of backslashing.
* scripts/plot/private/__gnuplot_version__.m: Use single quotes to avoid lots
of backslashing.
author | Rik <rik@octave.org> |
---|---|
date | Mon, 25 Feb 2013 21:01:36 -0800 |
parents | 72c96de7a403 |
children |
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## Copyright (C) 2006-2012 Daniel Sebald ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or (at ## your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {@var{version} =} __gnuplot_version__ () ## Undocumented internal function. ## @end deftypefn ## Return the version of gnuplot we are using. Note that we do not ## attempt to handle the case of the user switching to different ## versions of gnuplot during the same session. function version = __gnuplot_version__ () persistent __version__ = ""; if (isempty (__version__)) [status, output] = system (sprintf ('"%s" --version', gnuplot_binary ())); if (status != 0) ## This message ends in a newline so that the traceback messages ## are skipped and people might actually see the message, read it, ## comprehend it, take the advice it gives, and stop asking us ## why plotting fails when gnuplot is not found. 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"); endif output = strrep (output, "gnuplot", ""); output = strrep (output, "patchlevel", "."); output = strrep (output, "\n", ""); output = strrep (output, "\r", ""); __version__ = strrep (output, " ", ""); endif version = __version__; endfunction