Mercurial > hg > octave-lyh
annotate scripts/plot/area.m @ 10834:05ba991794d4
Improvements for fltk printing.
author | Ben Abbott <bpabbott@mac.com> |
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date | Thu, 29 Jul 2010 19:44:07 -0400 |
parents | be55736a0783 |
children | fd0a3ac60b0e |
rev | line source |
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9245 | 1 ## Copyright (C) 2007, 2008, 2009 Michael Goffioul |
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2 ## Copyright (C) 2007, 2008, 2009 David Bateman |
7146 | 3 ## |
4 ## This file is part of Octave. | |
5 ## | |
6 ## Octave is free software; you can redistribute it and/or modify it | |
7 ## under the terms of the GNU General Public License as published by | |
8 ## the Free Software Foundation; either version 3 of the License, or (at | |
9 ## your option) any later version. | |
10 ## | |
11 ## Octave is distributed in the hope that it will be useful, but | |
12 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 ## General Public License for more details. | |
15 ## | |
16 ## You should have received a copy of the GNU General Public License | |
17 ## along with Octave; see the file COPYING. If not, see | |
18 ## <http://www.gnu.org/licenses/>. | |
19 | |
20 ## -*- texinfo -*- | |
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21 ## @deftypefn {Function File} {} area (@var{x}, @var{y}) |
7146 | 22 ## @deftypefnx {Function File} {} area (@var{x}, @var{y}, @var{lvl}) |
23 ## @deftypefnx {Function File} {} area (@dots{}, @var{prop}, @var{val}, @dots{}) | |
24 ## @deftypefnx {Function File} {} area (@var{y}, @dots{}) | |
25 ## @deftypefnx {Function File} {} area (@var{h}, @dots{}) | |
26 ## @deftypefnx {Function File} {@var{h} =} area (@dots{}) | |
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27 ## Area plot of cumulative sum of the columns of @var{y}. This shows the |
7146 | 28 ## contributions of a value to a sum, and is functionally similar to |
29 ## @code{plot (@var{x}, cumsum (@var{y}, 2))}, except that the area under | |
30 ## the curve is shaded. | |
31 ## | |
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32 ## If the @var{x} argument is omitted it is assumed to be given by |
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33 ## @code{1 : rows (@var{y})}. A value @var{lvl} can be defined that determines |
7146 | 34 ## where the base level of the shading under the curve should be defined. |
35 ## | |
36 ## Additional arguments to the @code{area} function are passed to the | |
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37 ## @code{patch}. The optional return value @var{h} provides a handle to |
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38 ## area series object representing the patches of the areas. |
7146 | 39 ## @seealso{plot, patch} |
40 ## @end deftypefn | |
41 | |
7147 | 42 function h = area (varargin) |
7146 | 43 |
7215 | 44 [ax, varargin, nargin] = __plt_get_axis_arg__ ("area", varargin{:}); |
45 | |
7146 | 46 if (nargin > 0) |
47 idx = 1; | |
48 x = y = []; | |
49 bv = 0; | |
50 args = {}; | |
7147 | 51 ## Check for (X) or (X,Y) arguments and possible base value. |
7146 | 52 if (nargin >= idx && ismatrix (varargin{idx})) |
53 y = varargin{idx}; | |
54 idx++; | |
55 if (nargin >= idx) | |
56 if (isscalar (varargin{idx})) | |
57 bv = varargin{idx}; | |
58 idx++; | |
59 elseif (ismatrix (varargin{idx})) | |
60 x = y; | |
61 y = varargin{idx}; | |
62 idx++; | |
63 if (nargin >= idx && isscalar (varargin{idx})) | |
64 bv = varargin{idx}; | |
65 idx++; | |
66 endif | |
67 endif | |
68 endif | |
69 else | |
70 print_usage (); | |
71 endif | |
7147 | 72 ## Check for additional args. |
7146 | 73 if (nargin >= idx) |
74 args = {varargin{idx:end}}; | |
75 endif | |
76 newplot (); | |
77 if (isvector (y)) | |
78 y = y(:); | |
79 endif | |
80 if (isempty (x)) | |
81 x = repmat ([1:size(y, 1)]', 1, size (y, 2)); | |
82 elseif (isvector (x)) | |
83 x = repmat (x(:), 1, size (y, 2)); | |
84 endif | |
85 | |
7215 | 86 oldax = gca (); |
87 unwind_protect | |
88 axes (ax); | |
7146 | 89 tmp = __area__ (ax, x, y, bv, args{:}); |
7215 | 90 unwind_protect_cleanup |
91 axes (oldax); | |
92 end_unwind_protect | |
7146 | 93 |
94 if (nargout > 0) | |
95 h = tmp; | |
96 endif | |
97 else | |
98 print_usage (); | |
99 endif | |
100 | |
101 endfunction | |
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102 |
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103 function retval = __area__ (ax, x, y, bv, varargin) |
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104 |
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105 y0 = bv * ones (1, rows (y)); |
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106 y0 = zeros (1, rows (y)); |
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107 retval = []; |
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108 for i = 1: size (y, 2); |
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109 hg = hggroup (); |
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110 retval = [retval; hg]; |
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111 args = __add_datasource__ ("area", hg, {"x", "y"}, varargin{:}); |
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112 |
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113 x1 = x(:, 1).'; |
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114 y1 = y (:, i).'; |
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115 addproperty ("xdata", hg, "data", x1); |
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116 addproperty ("ydata", hg, "data", y1); |
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117 |
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118 addlistener (hg, "xdata", @update_data); |
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119 addlistener (hg, "ydata", @update_data); |
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120 |
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121 if (i == 1) |
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122 h = patch (ax, [x1(1), x1, fliplr(x1)], [bv, y1, bv*ones(1, length(y1))], |
10549 | 123 __next_line_color__ (), "parent", hg); |
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124 else |
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125 y1 = y0 + y1; |
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126 h = patch (ax, [x1(1), x1, fliplr(x1)], [y0(1), y1, fliplr(y0)], |
10549 | 127 __next_line_color__ (), "parent", hg); |
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128 endif |
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129 |
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130 y0 = y1; |
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131 |
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132 addproperty ("basevalue", hg, "data", bv); |
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133 addlistener (hg, "basevalue", @move_baseline); |
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134 |
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135 addproperty ("edgecolor", hg, "patchedgecolor", get (h, "edgecolor")); |
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136 addproperty ("linewidth", hg, "patchlinewidth", get (h, "linewidth")); |
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137 addproperty ("linestyle", hg, "patchlinestyle", get (h, "linestyle")); |
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138 addproperty ("facecolor", hg, "patchfacecolor", get (h, "facecolor")); |
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139 |
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140 addlistener (hg, "edgecolor", @update_props); |
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141 addlistener (hg, "linewidth", @update_props); |
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142 addlistener (hg, "linestyle", @update_props); |
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143 addlistener (hg, "facecolor", @update_props); |
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144 |
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145 addproperty ("areagroup", hg, "data"); |
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146 set (retval, "areagroup", retval); |
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147 |
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148 if (! isempty (args)) |
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149 set (hg, args{:}); |
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150 endif |
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151 endfor |
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152 |
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153 endfunction |
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154 |
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155 function update_props (h, d) |
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156 kids = get (h, "children"); |
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157 set (kids, "edgecolor", get (h, "edgecolor"), |
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158 "linewidth", get (h, "linewidth"), |
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159 "linestyle", get (h, "linestyle"), |
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160 "facecolor", get (h, "facecolor")); |
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161 endfunction |
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162 |
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163 function move_baseline (h, d) |
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164 persistent recursion = false; |
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165 |
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166 ## Don't allow recursion |
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167 if (! recursion) |
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168 unwind_protect |
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169 recursion = true; |
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170 hlist = get (h, "areagroup"); |
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171 b0 = get (h, "basevalue"); |
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172 |
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173 for hh = hlist(:)' |
10549 | 174 if (hh != h) |
175 b1 = get (hh, "basevalue"); | |
176 if (b1 != b0) | |
177 set (hh, "basevalue", b0); | |
178 endif | |
179 endif | |
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180 endfor |
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181 update_data (h, d); |
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182 unwind_protect_cleanup |
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183 recursion = false; |
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184 end_unwind_protect |
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185 endif |
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186 endfunction |
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187 |
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188 function update_data (h, d) |
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189 hlist = get (h, "areagroup"); |
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190 bv = get (h, "basevalue"); |
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191 for i = 1 : length (hlist) |
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192 hh = hlist(i); |
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193 x1 = get (hh, "xdata")(:); |
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194 y1 = get (hh, "ydata")(:); |
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195 |
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196 set (get (hh, "children"), "xdata", [x1(1); x1; flipud(x1)]); |
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197 if (i == 1) |
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198 set (get (hh, "children"), "ydata", [bv; y1; bv*ones(length(y1), 1)]); |
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199 else |
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200 y1 = y0 + y1; |
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201 set (get (hh, "children"), "ydata", [y0(1); y1; flipud(y0)]); |
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202 endif |
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203 |
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204 y0 = y1; |
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205 endfor |
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206 endfunction |