Mercurial > hg > octave-lyh
annotate scripts/plot/caxis.m @ 17219:87ba70043bfc
Don't use ifelse in plot fcns to avoid unnecessary fcn evaluations.
* scripts/plot/area.m, scripts/plot/axis.m, scripts/plot/caxis.m,
scripts/plot/comet.m, scripts/plot/comet3.m, scripts/plot/compass.m,
scripts/plot/contour.m, scripts/plot/contour3.m, scripts/plot/contourf.m,
scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/errorbar.m,
scripts/plot/feather.m, scripts/plot/fill.m, scripts/plot/loglog.m,
scripts/plot/loglogerr.m, scripts/plot/mesh.m, scripts/plot/meshc.m,
scripts/plot/meshz.m, scripts/plot/pcolor.m, scripts/plot/pie.m,
scripts/plot/pie3.m, scripts/plot/plot.m, scripts/plot/plot3.m,
scripts/plot/polar.m, scripts/plot/private/__bar__.m,
scripts/plot/private/__ezplot__.m, scripts/plot/private/__stem__.m,
scripts/plot/quiver.m, scripts/plot/quiver3.m, scripts/plot/rectangle.m,
scripts/plot/ribbon.m, scripts/plot/rose.m, scripts/plot/scatter.m,
scripts/plot/scatter3.m, scripts/plot/semilogx.m, scripts/plot/semilogxerr.m,
scripts/plot/semilogy.m, scripts/plot/semilogyerr.m, scripts/plot/slice.m,
scripts/plot/sphere.m, scripts/plot/stairs.m, scripts/plot/surf.m,
scripts/plot/surfc.m, scripts/plot/surfl.m, scripts/plot/surfnorm.m,
scripts/time/datetick.m: Don't use ifelse in plot fcns to avoid unnecessary fcn
evaluations.
author | Rik <rik@octave.org> |
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date | Fri, 09 Aug 2013 19:26:55 -0700 |
parents | eaab03308c0b |
children | bc924baa2c4e |
rev | line source |
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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 (@var{limits}) |
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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 argument @var{limits} 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. 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 @var{limits} is "auto", then automatic colormap scaling is applied, |
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33 ## whereas if @var{limits} is "manual" the colormap scaling is set to manual. |
7189 | 34 ## |
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35 ## If the first argument @var{hax} is an axes handle, then operate on |
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36 ## this axis rather than the current axes returned by @code{gca}. |
7189 | 37 ## |
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38 ## Called without arguments the current color axis limits are returned. |
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39 ## @seealso{colormap} |
7189 | 40 ## @end deftypefn |
41 | |
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42 function limits = caxis (varargin) |
7189 | 43 |
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44 [hax, varargin, nargin] = __plt_get_axis_arg__ ("caxis", varargin{:}); |
7216 | 45 |
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46 oldfig = []; |
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47 if (isempty (hax)) |
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48 oldfig = get (0, "currentfigure"); |
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49 endif |
7215 | 50 unwind_protect |
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51 if (isempty (hax)) |
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52 hax = gca (); |
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53 endif |
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54 if (nargin == 0) |
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55 limits = __caxis__ (hax); |
7189 | 56 else |
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57 __caxis__ (hax, varargin{:}); |
7189 | 58 endif |
7215 | 59 unwind_protect_cleanup |
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60 if (! isempty (oldfig)) |
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61 set (0, "currentfigure", oldfig); |
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62 endif |
7215 | 63 end_unwind_protect |
7189 | 64 |
65 endfunction | |
66 | |
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67 function limits = __caxis__ (ca, ax, varargin) |
7189 | 68 |
69 if (nargin == 1) | |
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70 limits = get (ca, "clim"); |
7189 | 71 elseif (ischar (ax)) |
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72 if (strcmpi (ax, "auto")) |
7189 | 73 set (ca, "climmode", "auto"); |
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74 elseif (strcmpi (ax, "manual")) |
7189 | 75 set (ca, "climmode", "manual"); |
76 endif | |
77 elseif (isvector (ax)) | |
78 len = length (ax); | |
79 if (len != 2) | |
80 error ("caxis: expecting vector with 2 elements"); | |
81 endif | |
82 | |
83 set (ca, "clim", [ax(1), ax(2)]); | |
84 else | |
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85 error ("caxis: expecting no args, a string, or a 2 element vector"); |
7189 | 86 endif |
87 | |
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88 ## FIXME: Why should it be possible to call __caxis__ recursively? |
7189 | 89 if (nargin > 2) |
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90 __caxis__ (ca, varargin{:})'; |
7189 | 91 endif |
92 | |
93 endfunction | |
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94 |