Mercurial > hg > octave-nkf
annotate scripts/plot/caxis.m @ 17538:b29c8a067c11
legend.m: Remove leftover code bits from debugging.
* scripts/plot/legend.m: Remove leftover code bits from debugging.
author | Rik <rik@octave.org> |
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date | Wed, 02 Oct 2013 21:29:21 -0700 |
parents | 4e86bb1901d6 |
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1 ## Copyright (C) 2007-2012 David Bateman |
7189 | 2 ## |
3 ## This file is part of Octave. | |
4 ## | |
5 ## Octave is free software; you can redistribute it and/or modify it | |
6 ## under the terms of the GNU General Public License as published by | |
7 ## the Free Software Foundation; either version 3 of the License, or (at | |
8 ## your option) any later version. | |
9 ## | |
10 ## Octave is distributed in the hope that it will be useful, but | |
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 ## General Public License for more details. | |
14 ## | |
15 ## You should have received a copy of the GNU General Public License | |
16 ## along with Octave; see the file COPYING. If not, see | |
17 ## <http://www.gnu.org/licenses/>. | |
18 | |
19 ## -*- texinfo -*- | |
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20 ## @deftypefn {Function File} {} caxis ([cmin cmax]) |
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21 ## @deftypefnx {Function File} {} caxis ("auto") |
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22 ## @deftypefnx {Function File} {} caxis ("manual") |
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23 ## @deftypefnx {Function File} {} caxis (@var{hax}, @dots{}) |
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24 ## @deftypefnx {Function File} {@var{limits} =} caxis () |
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25 ## Query or set color axis limits for plots. |
7189 | 26 ## |
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27 ## The limits argument should be a 2-element vector specifying the |
7189 | 28 ## lower and upper limits to assign to the first and last value in the |
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29 ## colormap. Data values outside this range are clamped to the first and last |
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30 ## colormap entries. |
7189 | 31 ## |
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32 ## If the @qcode{"auto"} option is given then automatic colormap limits are |
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33 ## applied. The automatic algorithm sets @var{cmin} to the minimum data value |
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34 ## and @var{cmax} to the maximum data value. If @qcode{"manual"} is specified |
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35 ## then the @qcode{"climmode"} property is set to @qcode{"manual"} and the |
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36 ## numeric values in the @qcode{"clim"} property are used for limits. |
7189 | 37 ## |
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38 ## If the first argument @var{hax} is an axes handle, then operate on |
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39 ## this axis rather than the current axes returned by @code{gca}. |
7189 | 40 ## |
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41 ## Called without arguments the current color axis limits are returned. |
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42 ## @seealso{colormap} |
7189 | 43 ## @end deftypefn |
44 | |
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45 function limits = caxis (varargin) |
7189 | 46 |
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47 [hax, varargin, nargin] = __plt_get_axis_arg__ ("caxis", varargin{:}); |
7216 | 48 |
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49 oldfig = []; |
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50 if (! isempty (hax)) |
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51 oldfig = get (0, "currentfigure"); |
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52 endif |
7215 | 53 unwind_protect |
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54 if (isempty (hax)) |
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55 hax = gca (); |
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56 endif |
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57 if (nargin == 0) |
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58 limits = __caxis__ (hax); |
7189 | 59 else |
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60 __caxis__ (hax, varargin{:}); |
7189 | 61 endif |
7215 | 62 unwind_protect_cleanup |
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63 if (! isempty (oldfig)) |
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64 set (0, "currentfigure", oldfig); |
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65 endif |
7215 | 66 end_unwind_protect |
7189 | 67 |
68 endfunction | |
69 | |
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70 function limits = __caxis__ (ca, ax, varargin) |
7189 | 71 |
72 if (nargin == 1) | |
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73 limits = get (ca, "clim"); |
7189 | 74 elseif (ischar (ax)) |
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75 if (strcmpi (ax, "auto")) |
7189 | 76 set (ca, "climmode", "auto"); |
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77 elseif (strcmpi (ax, "manual")) |
7189 | 78 set (ca, "climmode", "manual"); |
79 endif | |
80 elseif (isvector (ax)) | |
81 len = length (ax); | |
82 if (len != 2) | |
83 error ("caxis: expecting vector with 2 elements"); | |
84 endif | |
85 | |
86 set (ca, "clim", [ax(1), ax(2)]); | |
87 else | |
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88 error ("caxis: expecting no args, a string, or a 2 element vector"); |
7189 | 89 endif |
90 | |
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91 ## FIXME: Why should it be possible to call __caxis__ recursively? |
7189 | 92 if (nargin > 2) |
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93 __caxis__ (ca, varargin{:})'; |
7189 | 94 endif |
95 | |
96 endfunction | |
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97 |