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annotate scripts/plot/fill.m @ 17126:26589abbc78d

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Don't pass axis handle unnecessarily from high level to low level plot functions. * scripts/plot/comet.m, scripts/plot/comet3.m, scripts/plot/compass.m, scripts/plot/contour.m, scripts/plot/contourf.m, scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/errorbar.m, scripts/plot/feather.m, scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m, scripts/plot/pcolor.m, scripts/plot/plot3.m, scripts/plot/rectangle.m, scripts/plot/rose.m, scripts/plot/scatter3.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/surfnorm.m, scripts/plot/trimesh.m, scripts/plot/trisurf.m: Don't pass hax to lower level functions after newplot() has been called.
author Rik <rik@octave.org>
date Wed, 31 Jul 2013 18:42:17 -0700
parents eaab03308c0b
children 87ba70043bfc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2007-2012 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} {} fill (@var{x}, @var{y}, @var{c})
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21 ## @deftypefnx {Function File} {} fill (@var{x1}, @var{y1}, @var{c1}, @var{x2}, @var{y2}, @var{c2})
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22 ## @deftypefnx {Function File} {} fill (@dots{}, @var{prop}, @var{val})
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23 ## @deftypefnx {Function File} {} fill (@var{hax}, @dots{})
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24 ## @deftypefnx {Function File} {@var{h} =} fill (@dots{})
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25 ## Create one or more filled 2-D polygons.
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26 ##
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27 ## The inputs @var{x} and @var{y} are the coordinates of the polygon vertices.
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28 ## If the inputs are matrices then the rows represent different vertices and
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29 ## each column produces a different polygon. @code{fill} will close any open
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30 ## polygons before plotting.
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31 ##
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32 ## The input @var{c} determines the color of the polygon. The simplest form
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33 ## is a single color specification such as a @code{plot} format or an
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34 ## RGB-triple. In this case the polygon(s) will have one unique color. If
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35 ## @var{c} is a vector or matrix then the color data is first scaled using
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36 ## @code{caxis} and then indexed into the current colormap. A row vector will
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37 ## color each polygon (a column from matrices @var{x} and @var{y}) with a
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38 ## single computed color. A matrix @var{c} of the same size as @var{x} and
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39 ## @var{y} will compute the color of each vertex and then interpolate the face
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40 ## color between the vertices.
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41 ##
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42 ## Multiple property/value pairs for the underlying patch object may be
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43 ## specified, but they must appear in pairs.
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44 ##
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45 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
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46 ## rather than the current axes returned by @code{gca}.
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47 ##
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48 ## The optional return value @var{h} is a vector of graphics handles to
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49 ## the created patch objects.
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50 ##
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51 ## Example: red square
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52 ##
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53 ## @example
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54 ## @group
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55 ## vertices = [0 0
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56 ## 1 0
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57 ## 1 1
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58 ## 0 1];
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59 ## fill (vertices(:,1), vertices(:,2), "r");
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60 ## axis ([-0.5 1.5, -0.5 1.5])
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61 ## axis equal
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62 ## @end group
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63 ## @end example
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64 ##
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65 ## @seealso{patch, caxis, colormap}
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66 ## @end deftypefn
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67
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68 function h = fill (varargin)
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69
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70 [hax, varargin] = __plt_get_axis_arg__ ("fill", varargin{:});
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71
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72 hlist = [];
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73 iargs = __find_patches__ (varargin{:});
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74
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75 oldfig = ifelse (isempty (hax), [], get (0, "currentfigure"));
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76 unwind_protect
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77 hax = newplot (hax);
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78 old_nxtplt = get (hax, "nextplot");
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79 set (hax, "nextplot", "add");
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80
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81 for i = 1 : length (iargs)
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82 if (i == length (iargs))
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83 args = varargin(iargs(i):end);
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84 else
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85 args = varargin(iargs(i):iargs(i+1)-1);
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86 endif
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87 [htmp, fail] = __patch__ (hax, args{:});
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88 if (fail)
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89 print_usage ();
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90 endif
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91 hlist(end + 1, 1) = htmp;
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92 endfor
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93
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94 if (strncmp (old_nxtplt, "replace", 7))
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95 set (hax, "nextplot", old_nxtplt);
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96 endif
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97
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98 unwind_protect_cleanup
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99 if (! isempty (oldfig))
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100 set (0, "currentfigure", oldfig);
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101 endif
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102 end_unwind_protect
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103
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104 if (nargout > 0)
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105 h = hlist;
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106 endif
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107
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108 endfunction
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109
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110 function iargs = __find_patches__ (varargin)
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111 iargs = [];
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112 i = 1;
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113 while (i < nargin)
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114 iargs(end + 1) = i;
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115 if (ischar (varargin{i})
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116 && (strcmpi (varargin{i}, "faces")
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117 || strcmpi (varargin{i}, "vertices")))
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118 i += 4;
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119 elseif (isnumeric (varargin{i}))
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120 i += 2;
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121 endif
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122
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123 if (i <= nargin)
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124 while (true);
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125 if (ischar (varargin{i})
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126 && (strcmpi (varargin{i}, "faces")
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127 || strcmpi (varargin{i}, "vertices")))
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128 break;
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129 elseif (isnumeric (varargin{i}))
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130 ## Assume its the colorspec
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131 i++;
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132 break;
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133 elseif (ischar (varargin{i}))
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134 colspec = tolower (varargin{i});
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135 collen = length (colspec);
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136 if (any (strncmp (colspec,
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137 {"blue", "black", "k", "red", "green", ...
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138 "yellow", "magenta", "cyan", "white"},
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139 collen)))
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140 i++;
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141 break;
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142 endif
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143 else
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144 i += 2;
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145 endif
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146 endwhile
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147 endif
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148 endwhile
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149
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150 endfunction
e31f12bb9194 [project @ 2007-10-13 05:13:28 by dbateman]
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151
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152
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153 %!demo
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154 %! clf;
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155 %! t1 = (1/16:1/8:1) * 2*pi;
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156 %! t2 = ((1/16:1/8:1) + 1/32) * 2*pi;
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157 %! x1 = sin (t1) - 0.8;
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158 %! y1 = cos (t1);
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159 %! x2 = sin (t2) + 0.8;
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160 %! y2 = cos (t2);
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161 %! h = fill (x1,y1,'r', x2,y2,'g');
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162