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annotate scripts/plot/clabel.m @ 14237:11949c9795a0

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Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Add clf() to all demos using plot features to get reproducibility. Use 64 as input to all colormaps (jet (64)) to get reproducibility. * bicubic.m, cell2mat.m, celldisp.m, cplxpair.m, interp1.m, interp2.m, interpft.m, interpn.m, profile.m, profshow.m, convhull.m, delaunay.m, griddata.m, inpolygon.m, voronoi.m, autumn.m, bone.m, contrast.m, cool.m, copper.m, flag.m, gmap40.m, gray.m, hot.m, hsv.m, image.m, imshow.m, jet.m, ocean.m, pink.m, prism.m, rainbow.m, spring.m, summer.m, white.m, winter.m, condest.m, onenormest.m, axis.m, clabel.m, colorbar.m, comet.m, comet3.m, compass.m, contour.m, contour3.m, contourf.m, cylinder.m, daspect.m, ellipsoid.m, errorbar.m, ezcontour.m, ezcontourf.m, ezmesh.m, ezmeshc.m, ezplot.m, ezplot3.m, ezpolar.m, ezsurf.m, ezsurfc.m, feather.m, fill.m, fplot.m, grid.m, hold.m, isosurface.m, legend.m, loglog.m, loglogerr.m, pareto.m, patch.m, pbaspect.m, pcolor.m, pie.m, pie3.m, plot3.m, plotmatrix.m, plotyy.m, polar.m, quiver.m, quiver3.m, rectangle.m, refreshdata.m, ribbon.m, rose.m, scatter.m, scatter3.m, semilogx.m, semilogxerr.m, semilogy.m, semilogyerr.m, shading.m, slice.m, sombrero.m, stairs.m, stem.m, stem3.m, subplot.m, surf.m, surfc.m, surfl.m, surfnorm.m, text.m, title.m, trimesh.m, triplot.m, trisurf.m, uigetdir.m, uigetfile.m, uimenu.m, uiputfile.m, waitbar.m, xlim.m, ylim.m, zlim.m, mkpp.m, pchip.m, polyaffine.m, spline.m, bicgstab.m, cgs.m, gplot.m, pcg.m, pcr.m, treeplot.m, strtok.m, demo.m, example.m, rundemos.m, speed.m, test.m, calendar.m, datestr.m, datetick.m, weekday.m: Revamp %!demos to use Octave coding conventions on spacing, etc.
author Rik <octave@nomad.inbox5.com>
date Fri, 20 Jan 2012 12:59:53 -0800
parents 72c96de7a403
children 4506eade9f04
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2008-2012 David Bateman
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} clabel (@var{c}, @var{h})
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21 ## @deftypefnx {Function File} {} clabel (@var{c}, @var{h}, @var{v})
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22 ## @deftypefnx {Function File} {} clabel (@var{c}, @var{h}, "manual")
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23 ## @deftypefnx {Function File} {} clabel (@var{c})
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24 ## @deftypefnx {Function File} {} clabel (@var{c}, @var{h})
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25 ## @deftypefnx {Function File} {} clabel (@dots{}, @var{prop}, @var{val}, @dots{})
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26 ## @deftypefnx {Function File} {@var{h} =} clabel (@dots{})
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27 ## Add labels to the contours of a contour plot. The contour plot is specified
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28 ## by the contour matrix @var{c} and optionally the contourgroup object @var{h}
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29 ## that are returned by @code{contour}, @code{contourf} and @code{contour3}.
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30 ## The contour labels are rotated and placed in the contour itself.
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31 ##
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32 ## By default, all contours are labeled. However, the contours to label can be
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33 ## specified by the vector @var{v}. If the "manual" argument is given then
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34 ## the contours to label can be selected with the mouse.
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35 ##
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36 ## Additional property/value pairs that are valid properties of text objects
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37 ## can be given and are passed to the underlying text objects. Additionally,
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38 ## the property "LabelSpacing" is available allowing the spacing between labels
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39 ## on a contour (in points) to be specified. The default is 144 points, or 2
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40 ## inches.
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41 ##
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42 ## The optional return value @var{h} is a vector of graphics handles to
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43 ## the text objects representing each label.
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44 ## The "userdata" property of the text objects contains the numerical value of
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45 ## the contour label.
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46 ##
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47 ## An example of the use of @code{clabel} is
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48 ##
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49 ## @example
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50 ## @group
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51 ## [c, h] = contour (peaks(), -4 : 6);
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52 ## clabel (c, h, -4 : 2 : 6, 'fontsize', 12);
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53 ## @end group
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54 ## @end example
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55 ##
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56 ## @seealso{contour, contourf, contour3, meshc, surfc, text}
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57 ## @end deftypefn
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58
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59 function retval = clabel (c, varargin)
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60 label_spacing = 2 * 72;
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61 have_hg = false;
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62 have_labelspacing = false;
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63
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64 if (nargin < 1)
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65 print_usage ();
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66 elseif (nargin == 1)
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67 hparent = gca ();
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68 else
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69 arg = varargin{1};
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70 if (isscalar (arg) && ishandle(arg)
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71 && strcmp (get (arg, "type"), "hggroup"))
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72 obj = get (arg);
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73 if (! isfield (obj, "contourmatrix"))
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74 error ("clabel: expecting the handle to be a contour group");
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75 endif
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76 hg = arg;
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77 have_hg = true;
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78 varargin(1) = [];
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79 else
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80 hparent = gca ();
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81 endif
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82 endif
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83
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84 if (length(varargin) > 0 && isnumeric (varargin{1}))
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85 v = varargin{1}(:);
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86 varargin(1) = [];
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87 else
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88 v = [];
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89 endif
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90
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91 for i = 1 : length (varargin) - 1
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92 arg = varargin{i};
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93 if (strcmpi (arg, "labelspacing"))
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94 label_spacing = varargin{i+1};
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95 have_labelspacing = true;
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96 varargin(i:i+1) = [];
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97 break;
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98 endif
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99 endfor
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100
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101 for i = 1 : length (varargin)
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102 arg = varargin{i};
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103 if (strcmpi (arg, "manual"))
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104 error ("clabel: manual contouring mode not supported");
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105 endif
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106 endfor
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107
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108 if (have_hg)
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109 if (! isempty (v))
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110 if (have_labelspacing)
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111 set (hg, "textlistmode", "manual", "textlist", v,
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112 "labelspacing", label_spacing, "showtext", "on");
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113 else
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114 set (hg, "textlistmode", "manual", "textlist", v, "showtext", "on");
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115 endif
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116 else
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117 if (have_labelspacing)
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118 set (hg,"showtext", "on", "labelspacing", label_spacing);
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119 else
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120 set (hg,"showtext", "on");
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121 endif
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122 endif
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123 retval = findobj (hg, "type", "text");
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124 if (! isempty (varargin))
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125 set (retval, varargin {:});
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126 endif
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127 else
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128 retval = __clabel__ (c, v, hparent, label_spacing, [], varargin{:});
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129 endif
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130
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131 endfunction
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132
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133
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David Bateman <dbateman@free.fr>
parents:
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134 %!demo
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Rik <octave@nomad.inbox5.com>
parents: 14138
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135 %! clf;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
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136 %! [c, h] = contour (peaks (), -4:6);
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 12575
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137 %! clabel (c, h, -4:2:6, "fontsize", 12);
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 12575
diff changeset
138
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 12575
diff changeset
139 %!demo
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
140 %! clf;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
141 %! [c, h] = contourf (peaks (), -7:6);
14001
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 12575
diff changeset
142 %! clabel (c, h, -6:2:6, "fontsize", 12);
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761)
Rik <octave@nomad.inbox5.com>
parents: 12575
diff changeset
143