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## Copyright (C) 1996, 1997 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 2, 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, write to the Free
## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
## 02111-1307, USA.
## usage: fmt = __pltopt1__ (caller, opt)
##
## Really decode plot option strings.
##
## See also: __pltopt__
## Author: Rick Niles <niles@axp745.gsfc.nasa.gov>
## Adapted-By: jwe
## Maintainer: jwe
function fmt = __pltopt1__ (caller, opt)
set_color = 0;
set_symbol = 0;
set_lines = 0;
set_dots = 0;
set_points = 0;
set_impulses = 0;
set_steps = 0;
set_boxes = 0;
set_errbars = 0;
set_key = 0;
more_opts = 1;
WITH = "w";
LINES = "l";
LINESPOINTS = "linesp";
BOXERRORBARS = "boxer";
BOXES = "boxes";
POINTS = "p";
DOTS = "d";
IMPULSES = "i";
STEPS = "s";
ERRORBARS = "e";
TITLE = "title";
if (nargin != 2)
usage ("__pltopt1__ (opt)");
endif
if (! isstr (opt))
error ("__pltopt1__: argument must be a string");
endif
while (more_opts)
## First get next char.
if (max (size (opt)) > 1)
# [char, opt] = sscanf (opt, "%c %s", "C");
char = opt(1);
opt = opt(2:length(opt));
else
char = opt;
more_opts = 0;
endif
## Now set flags based on char.
if (strcmp (char, "-"))
set_lines = 1;
elseif (strcmp (char, "."))
set_dots = 1;
elseif (strcmp (char, "@"))
set_points = 1;
elseif (strcmp (char, "^"))
set_impulses = 1;
elseif (strcmp (char, "L"))
set_steps = 1;
elseif (strcmp (char, "~"))
set_errbars = 1;
elseif (strcmp (char, "#"))
set_boxes = 1;
elseif (strcmp (char, "0") || strcmp (char, "1") ...
|| strcmp (char, "2") || strcmp (char, "3") ...
|| strcmp (char, "4") || strcmp (char, "5") ...
|| strcmp (char, "6") || strcmp (char, "7") ...
|| strcmp (char, "8") || strcmp (char, "9"))
if (set_color)
set_points = 1;
symbol = char;
set_symbol = 1;
else
color = char;
set_color = 1;
endif
elseif (strcmp (char, "r"))
set_color = 1;
color = "1";
elseif (strcmp (char, "g"))
set_color = 1;
color = "2";
elseif (strcmp (char, "b"))
set_color = 1;
color = "3";
elseif (strcmp (char, "m"))
set_color = 1;
color = "4";
elseif (strcmp (char, "c"))
set_color = 1;
color = "5";
elseif (strcmp (char, "w") || strcmp (char, "k"))
set_color = 1;
color = "6";
elseif (strcmp (char, "*"))
set_points = 1;
set_symbol = 1;
symbol = "6";
elseif (strcmp (char, "+"))
set_points = 1;
set_symbol = 1;
symbol = "2";
elseif (strcmp (char, "o"))
set_points = 1;
set_symbol = 1;
symbol = "1";
elseif (strcmp (char, "x"))
set_points = 1;
set_symbol = 1;
symbol = "4";
elseif (strcmp (char, ";")) # title mode.
set_key = 1;
working = 1;
key_title = "";
while (working)
if (max (size (opt)) > 1)
char = opt(1);
opt = opt(2:length(opt));
else
char = opt;
if (! strcmp (char, ";"))
error ("%s: unfinished key label", caller);
end
more_opts = 0;
working = 0;
endif
if strcmp (char, ";")
working = 0;
else
if (isempty (key_title)) # needs this to avoid empty matrix warning.
key_title = char;
else
key_title = strcat (key_title, char);
endif
endif
endwhile
elseif (strcmp (char, " "))
## whitespace -- do nothing.
else
error ("%s: unrecognized format character: '%s'", caller, char);
endif
endwhile
## Now create format string.
fmt = WITH;
if (set_lines)
if (set_points)
fmt = strcat (fmt, " ", LINESPOINTS);
else
fmt = strcat (fmt, " ", LINES);
endif
elseif (set_boxes)
if (set_errbars)
fmt = strcat (fmt, " ", BOXERRORBARS);
else
fmt = strcat (fmt, " ", BOXES);
endif
elseif (set_points)
fmt = strcat (fmt, " ", POINTS);
elseif (set_dots)
fmt = strcat (fmt, " ", DOTS);
elseif (set_impulses)
fmt = strcat (fmt, " ", IMPULSES);
elseif (set_steps)
fmt = strcat (fmt, " ", STEPS);
elseif (set_errbars)
fmt = strcat (fmt, " ", ERRORBARS);
endif
if (strcmp (fmt, WITH))
fmt = strcat (fmt, " ", LINES);
endif
if (set_color)
fmt = strcat (fmt, " ", color);
if (set_symbol)
fmt = strcat (fmt, " ", symbol);
endif
elseif (set_symbol)
fmt = strcat (fmt, " 1 ", symbol);
endif
if (set_key)
fmt = sprintf ("%s %s \"%s\" ", fmt, TITLE, key_title);
endif
endfunction
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