--- /dev/null
+## Copyright (C) 1994-2012 John W. Eaton
+##
+## 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} {} __pltopt__ (@var{caller}, @var{opt})
+## Undocumented internal function.
+## @end deftypefn
+
+## @deftypefn {Function File} {} __pltopt__ (@var{caller}, @var{opt})
+##
+## Decode plot option strings.
+##
+## @var{opt} can currently be some combination of the following:
+##
+## @table @code
+## @item "-"
+## For solid linestyle (default).
+##
+## @item "--"
+## For dashed line style.
+##
+## @item "-."
+## For linespoints plot style.
+##
+## @item ":"
+## For dots plot style.
+##
+## @item "r"
+## Red line color.
+##
+## @item "g"
+## Green line color.
+##
+## @item "b"
+## Blue line color.
+##
+## @item "c"
+## Cyan line color.
+##
+## @item "m"
+## Magenta line color.
+##
+## @item "y"
+## Yellow line color.
+##
+## @item "k"
+## Black line color.
+##
+## @item "w"
+## White line color.
+##
+## @item ";title;"
+## Here @code{"title"} is the label for the key.
+##
+## @item "+"
+## @itemx "o"
+## @itemx "*"
+## @itemx "."
+## @itemx "x"
+## @itemx "s"
+## @itemx "d"
+## @itemx "^"
+## @itemx "v"
+## @itemx ">"
+## @itemx "<"
+## @itemx "p"
+## @itemx "h"
+## Used in combination with the points or linespoints styles, set the point
+## style.
+## @end table
+##
+## The legend may be fixed to include the name of the variable
+## plotted in some future version of Octave.
+
+## Author: jwe
+
+function [options, valid] = __pltopt__ (caller, opt, err_on_invalid)
+
+ valid = true;
+ options = __default_plot_options__ ();
+
+ if ((nargin == 2 || nargin == 3) && (nargout == 1 || nargout == 2))
+ if (nargin == 2)
+ err_on_invalid = true;
+ endif
+ if (ischar (opt))
+ nel = rows (opt);
+ elseif (iscellstr (opt))
+ nel = numel (opt);
+ else
+ error ("__pltopt__: expecting argument to be character string or cell array of character strings");
+ endif
+ if (ischar (opt))
+ opt = cellstr (opt);
+ endif
+ for i = nel:-1:1
+ [options(i), valid] = __pltopt1__ (caller, opt{i}, err_on_invalid);
+ if (! err_on_invalid && ! valid)
+ return;
+ endif
+ endfor
+ else
+ print_usage ();
+ endif
+
+endfunction
+
+## Really decode plot option strings.
+
+## Author: Rick Niles <niles@axp745.gsfc.nasa.gov>
+## Adapted-By: jwe
+## Maintainer: jwe
+
+function [options, valid] = __pltopt1__ (caller, opt, err_on_invalid)
+
+ options = __default_plot_options__ ();
+ valid = true;
+
+ more_opts = 1;
+
+ if (nargin != 2 && nargin != 3)
+ print_usage ();
+ endif
+
+ if (! ischar (opt))
+ return;
+ endif
+
+ have_linestyle = false;
+ have_marker = false;
+
+ ## If called by __errplot__, extract the linestyle before proceeding.
+ if (strcmp (caller,"__errplot__"))
+ if (strncmp (opt, "#~>", 3))
+ n = 3;
+ elseif (strncmp (opt, "#~", 2) || strncmp (opt, "~>", 2))
+ n = 2;
+ elseif (strncmp (opt, "~", 1) || strncmp (opt, ">", 1)
+ || strncmp (opt, "#", 1))
+ n = 1;
+ else
+ n = 0;
+ endif
+ options.errorstyle = opt(1:n);
+ opt(1:n) = [];
+ else
+ options.errorstyle = "~";
+ endif
+
+ while (! isempty (opt))
+ if (strncmp (opt, "--", 2) || strncmp (opt, "-.", 2))
+ options.linestyle = opt(1:2);
+ have_linestyle = true;
+ n = 2;
+ else
+ topt = opt(1);
+ n = 1;
+ if (topt == "-" || topt == ":")
+ have_linestyle = true;
+ options.linestyle = topt;
+ elseif (topt == "+" || topt == "o" || topt == "*"
+ || topt == "." || topt == "x" || topt == "s"
+ || topt == "d" || topt == "^" || topt == "v"
+ || topt == ">" || topt == "<" || topt == "p"
+ || topt == "h" || topt == "@")
+ have_marker = true;
+ ## Backward compatibility. Leave undocumented.
+ if (topt == "@")
+ topt = "+";
+ endif
+ options.marker = topt;
+### Numeric color specs for backward compatibility. Leave undocumented.
+ elseif (topt == "k" || topt == "0")
+ options.color = [0, 0, 0];
+ elseif (topt == "r" || topt == "1")
+ options.color = [1, 0, 0];
+ elseif (topt == "g" || topt == "2")
+ options.color = [0, 1, 0];
+ elseif (topt == "b" || topt == "3")
+ options.color = [0, 0, 1];
+ elseif (topt == "y")
+ options.color = [1, 1, 0];
+ elseif (topt == "m" || topt == "4")
+ options.color = [1, 0, 1];
+ elseif (topt == "c" || topt == "5")
+ options.color = [0, 1, 1];
+ elseif (topt == "w" || topt == "6")
+ options.color = [1, 1, 1];
+ elseif (isspace (topt))
+ ## Do nothing.
+ elseif (topt == ";")
+ t = index (opt(2:end), ";");
+ if (t)
+ options.key = undo_string_escapes (opt(2:t));
+ n = t+1;
+ else
+ if (err_on_invalid)
+ error ("%s: unfinished key label", caller);
+ else
+ valid = false;
+ options = __default_plot_options__ ();
+ return;
+ endif
+ endif
+ else
+ if (err_on_invalid)
+ error ("%s: unrecognized format character: `%s'", caller, topt);
+ else
+ valid = false;
+ options = __default_plot_options__ ();
+ return;
+ endif
+ endif
+ endif
+ opt(1:n) = [];
+ endwhile
+
+ if (! have_linestyle && have_marker)
+ options.linestyle = "none";
+ endif
+
+ if (have_linestyle && ! have_marker)
+ options.marker = "none";
+ endif
+
+endfunction
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff