Mercurial > octave-nkf
annotate scripts/plot/plot3.m @ 14138:72c96de7a403 stable
maint: update copyright notices for 2012
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 02 Jan 2012 14:25:41 -0500 |
| parents | 22c50cbad2ce |
| children | b33589ef9213 |
| rev | line source |
|---|---|
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1 ## Copyright (C) 1996-2012 John W. Eaton |
| 5837 | 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 | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 5837 | 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 | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 5837 | 18 |
| 19 ## -*- texinfo -*- | |
| 5910 | 20 ## @deftypefn {Function File} {} plot3 (@var{args}) |
| 6895 | 21 ## Produce three-dimensional plots. Many different combinations of |
| 22 ## arguments are possible. The simplest form is | |
| 5837 | 23 ## |
| 24 ## @example | |
| 25 ## plot3 (@var{x}, @var{y}, @var{z}) | |
| 26 ## @end example | |
| 27 ## | |
| 28 ## @noindent | |
| 6895 | 29 ## in which the arguments are taken to be the vertices of the points to |
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30 ## be plotted in three dimensions. If all arguments are vectors of the |
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31 ## same length, then a single continuous line is drawn. If all arguments |
| 6895 | 32 ## are matrices, then each column of the matrices is treated as a |
| 7001 | 33 ## separate line. No attempt is made to transpose the arguments to make |
| 6895 | 34 ## the number of rows match. |
| 5837 | 35 ## |
| 6895 | 36 ## If only two arguments are given, as |
| 5910 | 37 ## |
| 38 ## @example | |
| 39 ## plot3 (@var{x}, @var{c}) | |
| 40 ## @end example | |
| 41 ## | |
| 6895 | 42 ## @noindent |
| 43 ## the real and imaginary parts of the second argument are used | |
| 44 ## as the @var{y} and @var{z} coordinates, respectively. | |
| 5910 | 45 ## |
| 46 ## If only one argument is given, as | |
| 47 ## | |
| 48 ## @example | |
| 49 ## plot3 (@var{c}) | |
| 50 ## @end example | |
| 51 ## | |
| 6895 | 52 ## @noindent |
| 5910 | 53 ## the real and imaginary parts of the argument are used as the @var{y} |
| 54 ## and @var{z} values, and they are plotted versus their index. | |
| 55 ## | |
| 6895 | 56 ## Arguments may also be given in groups of three as |
| 5837 | 57 ## |
| 58 ## @example | |
| 6146 | 59 ## plot3 (@var{x1}, @var{y1}, @var{z1}, @var{x2}, @var{y2}, @var{z2}, @dots{}) |
| 5837 | 60 ## @end example |
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61 ## |
| 5837 | 62 ## @noindent |
| 7001 | 63 ## in which each set of three arguments is treated as a separate line or |
| 5910 | 64 ## set of lines in three dimensions. |
| 65 ## | |
| 6895 | 66 ## To plot multiple one- or two-argument groups, separate each group |
| 67 ## with an empty format string, as | |
| 5910 | 68 ## |
| 69 ## @example | |
| 6895 | 70 ## plot3 (@var{x1}, @var{c1}, "", @var{c2}, "", @dots{}) |
| 5910 | 71 ## @end example |
| 5837 | 72 ## |
| 6895 | 73 ## An example of the use of @code{plot3} is |
| 5837 | 74 ## |
| 75 ## @example | |
| 76 ## @group | |
| 77 ## z = [0:0.05:5]; | |
| 6895 | 78 ## plot3 (cos(2*pi*z), sin(2*pi*z), z, ";helix;"); |
| 79 ## plot3 (z, exp(2i*pi*z), ";complex sinusoid;"); | |
| 5837 | 80 ## @end group |
| 81 ## @end example | |
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82 ## @seealso{plot, xlabel, ylabel, zlabel, title, print} |
| 5837 | 83 ## @end deftypefn |
| 84 | |
| 85 ## Author: Paul Kienzle | |
| 86 ## (modified from __plt__.m) | |
| 87 | |
| 6302 | 88 function retval = plot3 (varargin) |
| 5837 | 89 |
| 6560 | 90 newplot (); |
| 91 | |
| 6257 | 92 x_set = 0; |
| 93 y_set = 0; | |
| 94 z_set = 0; | |
| 6459 | 95 property_set = 0; |
| 96 fmt_set = 0; | |
| 97 properties = {}; | |
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98 tlgnd = {}; |
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99 hlgnd = []; |
| 6302 | 100 idx = 0; |
| 101 | |
| 6257 | 102 ## Gather arguments, decode format, and plot lines. |
| 6459 | 103 arg = 0; |
| 104 while (arg++ < nargin) | |
| 6257 | 105 new = varargin{arg}; |
| 6459 | 106 new_cell = varargin(arg); |
| 107 | |
| 108 if (property_set) | |
| 109 properties = [properties, new_cell]; | |
| 110 property_set = 0; | |
| 111 continue; | |
| 112 endif | |
| 6004 | 113 |
| 6257 | 114 if (ischar (new)) |
| 115 if (! z_set) | |
| 10549 | 116 if (! y_set) |
| 117 if (! x_set) | |
| 118 error ("plot3: needs x, [ y, [ z ] ]"); | |
| 119 else | |
| 120 z = imag (x); | |
| 121 y = real (x); | |
| 122 y_set = 1; | |
| 123 z_set = 1; | |
| 124 if (rows(x) > 1) | |
| 125 x = repmat ((1:rows(x))', 1, columns(x)); | |
| 126 else | |
| 127 x = 1:columns(x); | |
| 128 endif | |
| 129 endif | |
| 130 else | |
| 131 z = imag (y); | |
| 132 y = real (y); | |
| 133 z_set = 1; | |
| 134 endif | |
| 5837 | 135 endif |
| 6459 | 136 |
| 137 if (! fmt_set) | |
| 10549 | 138 [options, valid] = __pltopt__ ("plot3", new, false); |
| 139 if (! valid) | |
| 140 properties = [properties, new_cell]; | |
| 141 property_set = 1; | |
| 142 continue; | |
| 143 else | |
| 144 fmt_set = 1; | |
| 145 while (arg < nargin && ischar (varargin{arg+1})) | |
| 146 if (nargin - arg < 2) | |
| 147 error ("plot3: properties must appear followed by a value"); | |
| 148 endif | |
| 149 properties = [properties, varargin(arg+1:arg+2)]; | |
| 150 arg += 2; | |
| 151 endwhile | |
| 152 endif | |
| 6459 | 153 else |
| 10549 | 154 properties = [properties, new_cell]; |
| 155 property_set = 1; | |
| 156 continue; | |
| 6459 | 157 endif |
| 6004 | 158 |
| 159 if (isvector (x) && isvector (y)) | |
| 10549 | 160 if (isvector (z)) |
| 161 x = x(:); | |
| 162 y = y(:); | |
| 163 z = z(:); | |
| 164 elseif (length (x) == rows (z) && length (y) == columns (z)) | |
| 165 [x, y] = meshgrid (x, y); | |
| 166 else | |
| 167 error ("plot3: [length(x), length(y)] must match size(z)"); | |
| 168 endif | |
| 6004 | 169 endif |
| 170 | |
| 7292 | 171 if (! size_equal (x, y, z)) |
| 10549 | 172 error ("plot3: x, y, and z must have the same shape"); |
| 6004 | 173 endif |
| 174 | |
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175 for i = 1 : columns (x) |
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176 linestyle = options.linestyle; |
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177 marker = options.marker; |
| 10549 | 178 if (isempty (marker) && isempty (linestyle)) |
| 179 [linestyle, marker] = __next_line_style__ (); | |
| 180 endif | |
| 181 color = options.color; | |
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182 if (isempty (color)) |
| 10549 | 183 color = __next_line_color__ (); |
| 184 endif | |
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185 |
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186 tmp(++idx) = line (x(:, i), y(:, i), z(:, i), |
| 10549 | 187 "color", color, "linestyle", linestyle, |
| 188 "marker", marker, properties{:}); | |
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189 key = options.key; |
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190 if (! isempty (key)) |
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191 hlgnd = [hlgnd, tmp(idx)]; |
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192 tlgnd = {tlgnd{:}, key}; |
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193 endif |
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194 endfor |
| 6004 | 195 |
| 6257 | 196 x_set = 0; |
| 197 y_set = 0; | |
| 198 z_set = 0; | |
| 6459 | 199 fmt_set = 0; |
| 200 properties = {}; | |
| 6257 | 201 elseif (! x_set) |
| 202 x = new; | |
| 203 x_set = 1; | |
| 204 elseif (! y_set) | |
| 205 y = new; | |
| 206 y_set = 1; | |
| 207 elseif (! z_set) | |
| 208 z = new; | |
| 209 z_set = 1; | |
| 210 else | |
| 211 if (isvector (x) && isvector (y)) | |
| 10549 | 212 if (isvector (z)) |
| 213 x = x(:); | |
| 214 y = y(:); | |
| 215 z = z(:); | |
| 216 elseif (length (x) == rows (z) && length (y) == columns (z)) | |
| 217 [x, y] = meshgrid (x, y); | |
| 218 else | |
| 219 error ("plot3: [length(x), length(y)] must match size(z)"); | |
| 220 endif | |
| 6257 | 221 endif |
| 222 | |
| 7292 | 223 if (! size_equal (x, y, z)) |
| 10549 | 224 error ("plot3: x, y, and z must have the same shape"); |
| 6257 | 225 endif |
| 226 | |
| 6459 | 227 options = __default_plot_options__ (); |
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228 for i = 1 : columns (x) |
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229 linestyle = options.linestyle; |
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230 marker = options.marker; |
| 10549 | 231 if (isempty (marker) && isempty (linestyle)) |
| 232 [linestyle, marker] = __next_line_style__ (); | |
| 233 endif | |
| 234 color = options.color; | |
| 235 if (isempty (color)) | |
| 236 color = __next_line_color__ (); | |
| 237 endif | |
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238 |
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239 tmp(++idx) = line (x(:, i), y(:, i), z(:, i), |
| 10549 | 240 "color", color, "linestyle", linestyle, |
| 241 "marker", marker, properties{:}); | |
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242 key = options.key; |
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243 if (! isempty (key)) |
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244 hlgnd = [hlgnd, tmp(idx)]; |
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245 tlgnd = {tlgnd{:}, key}; |
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246 endif |
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247 endfor |
| 6257 | 248 |
| 249 x = new; | |
| 250 y_set = 0; | |
| 251 z_set = 0; | |
| 6459 | 252 fmt_set = 0; |
| 253 properties = {}; | |
| 5837 | 254 endif |
| 6257 | 255 |
| 6459 | 256 endwhile |
| 257 | |
| 258 if (property_set) | |
| 259 error ("plot3: properties must appear followed by a value"); | |
| 260 endif | |
| 6257 | 261 |
| 262 ## Handle last plot. | |
| 263 | |
| 264 if (x_set) | |
| 265 if (y_set) | |
| 266 if (! z_set) | |
| 10549 | 267 z = imag (y); |
| 268 y = real (y); | |
| 269 z_set = 1; | |
| 6257 | 270 endif |
| 271 else | |
| 272 z = imag (x); | |
| 273 y = real (x); | |
| 274 y_set = 1; | |
| 275 z_set = 1; | |
| 276 if (rows (x) > 1) | |
| 10549 | 277 x = repmat ((1:rows (x))', 1, columns(x)); |
| 6257 | 278 else |
| 10549 | 279 x = 1:columns(x); |
| 6257 | 280 endif |
| 5837 | 281 endif |
| 6257 | 282 |
| 283 if (isvector (x) && isvector (y)) | |
| 284 if (isvector (z)) | |
| 10549 | 285 x = x(:); |
| 286 y = y(:); | |
| 287 z = z(:); | |
| 6257 | 288 elseif (length (x) == rows (z) && length (y) == columns (z)) |
| 10549 | 289 [x, y] = meshgrid (x, y); |
| 6257 | 290 else |
| 10549 | 291 error ("plot3: [length(x), length(y)] must match size(z)"); |
| 6257 | 292 endif |
| 293 endif | |
| 294 | |
| 7292 | 295 if (! size_equal (x, y, z)) |
| 6257 | 296 error ("plot3: x, y, and z must have the same shape"); |
| 297 endif | |
| 298 | |
| 6459 | 299 options = __default_plot_options__ (); |
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300 |
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301 for i = 1 : columns (x) |
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302 linestyle = options.linestyle; |
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303 marker = options.marker; |
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304 if (isempty (marker) && isempty (linestyle)) |
| 10549 | 305 [linestyle, marker] = __next_line_style__ (); |
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306 endif |
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307 color = options.color; |
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308 if (isempty (color)) |
| 10549 | 309 color = __next_line_color__ (); |
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310 endif |
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311 |
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312 tmp(++idx) = line (x(:, i), y(:, i), z(:, i), |
| 10549 | 313 "color", color, "linestyle", linestyle, |
| 314 "marker", marker, properties{:}); | |
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315 key = options.key; |
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316 if (! isempty (key)) |
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317 hlgnd = [hlgnd, tmp(idx)]; |
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318 tlgnd = {tlgnd{:}, key}; |
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319 endif |
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320 endfor |
| 6257 | 321 endif |
| 322 | |
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323 if (!isempty (hlgnd)) |
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324 legend (gca(), hlgnd, tlgnd); |
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325 endif |
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326 |
| 6257 | 327 set (gca (), "view", [-37.5, 30]); |
| 5837 | 328 |
| 6302 | 329 if (nargout > 0 && idx > 0) |
| 330 retval = tmp; | |
| 331 endif | |
| 332 | |
| 5837 | 333 endfunction |
| 7245 | 334 |
| 335 %!demo | |
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336 %! clf |
| 7245 | 337 %! z = [0:0.05:5]; |
| 338 %! plot3 (cos(2*pi*z), sin(2*pi*z), z, ";helix;"); | |
| 339 %! plot3 (z, exp(2i*pi*z), ";complex sinusoid;"); |