Mercurial > hg > octave-nkf
annotate scripts/plot/draw/plotmatrix.m @ 19898:4197fc428c7d
maint: Update copyright notices for 2015.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 11 Feb 2015 14:19:08 -0500 |
parents | d63878346099 |
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1 ## Copyright (C) 2008-2015 David Bateman |
8127 | 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} {} plotmatrix (@var{x}, @var{y}) |
8127 | 21 ## @deftypefnx {Function File} {} plotmatrix (@var{x}) |
22 ## @deftypefnx {Function File} {} plotmatrix (@dots{}, @var{style}) | |
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23 ## @deftypefnx {Function File} {} plotmatrix (@var{hax}, @dots{}) |
8127 | 24 ## @deftypefnx {Function File} {[@var{h}, @var{ax}, @var{bigax}, @var{p}, @var{pax}] =} plotmatrix (@dots{}) |
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25 ## Scatter plot of the columns of one matrix against another. |
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26 ## |
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27 ## Given the arguments @var{x} and @var{y}, that have a matching number of |
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28 ## rows, @code{plotmatrix} plots a set of axes corresponding to |
8127 | 29 ## |
30 ## @example | |
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31 ## plot (@var{x}(:, i), @var{y}(:, j)) |
8127 | 32 ## @end example |
33 ## | |
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34 ## Given a single argument @var{x} this is equivalent to |
8127 | 35 ## |
36 ## @example | |
37 ## plotmatrix (@var{x}, @var{x}) | |
38 ## @end example | |
39 ## | |
40 ## @noindent | |
41 ## except that the diagonal of the set of axes will be replaced with the | |
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42 ## histogram @code{hist (@var{x}(:, i))}. |
8127 | 43 ## |
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44 ## The marker to use can be changed with the @var{style} argument, that is a |
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45 ## string defining a marker in the same manner as the @code{plot} command. |
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46 ## |
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47 ## If the first argument @var{hax} is an axes handle, then plot into this axis, |
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48 ## rather than the current axes returned by @code{gca}. |
8127 | 49 ## |
50 ## The optional return value @var{h} provides handles to the individual | |
51 ## graphics objects in the scatter plots, whereas @var{ax} returns the | |
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52 ## handles to the scatter plot axis objects. @var{bigax} is a hidden |
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53 ## axis object that surrounds the other axes, such that the commands |
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54 ## @code{xlabel}, @code{title}, etc., will be associated with this hidden |
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55 ## axis. Finally, @var{p} returns the graphics objects associated with |
8127 | 56 ## the histogram and @var{pax} the corresponding axes objects. |
57 ## | |
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58 ## Example: |
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59 ## |
8127 | 60 ## @example |
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61 ## plotmatrix (randn (100, 3), "g+") |
8127 | 62 ## @end example |
63 ## | |
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64 ## @seealso{scatter, plot} |
8127 | 65 ## @end deftypefn |
66 | |
67 function [h, ax, bigax, p, pax] = plotmatrix (varargin) | |
68 | |
69 [bigax2, varargin, nargin] = __plt_get_axis_arg__ ("plotmatrix", varargin{:}); | |
70 | |
71 if (nargin > 3 || nargin < 1) | |
72 print_usage (); | |
73 endif | |
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74 |
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75 oldfig = []; |
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76 if (! isempty (bigax2)) |
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77 oldfig = get (0, "currentfigure"); |
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78 endif |
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79 unwind_protect |
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80 bigax2 = newplot (bigax2); |
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81 |
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82 [h2, ax2, p2, pax2] = __plotmatrix__ (bigax2, varargin{:}); |
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83 |
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84 axes (bigax2); |
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85 ctext = text (0, 0, "", "visible", "off", |
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86 "handlevisibility", "off", "xliminclude", "off", |
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87 "yliminclude", "off", "zliminclude", "off", |
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88 "deletefcn", {@plotmatrixdelete, [ax2; pax2]}); |
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89 set (bigax2, "visible", "off"); |
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90 |
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91 unwind_protect_cleanup |
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92 if (! isempty (oldfig)) |
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93 set (0, "currentfigure", oldfig); |
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94 endif |
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95 end_unwind_protect |
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96 |
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97 if (nargout > 0) |
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98 h = h2; |
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99 ax = ax2; |
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100 bigax = bigax2; |
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101 p = p2; |
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102 pax = pax2; |
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103 endif |
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104 |
8127 | 105 endfunction |
106 | |
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107 |
8127 | 108 %!demo |
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109 %! clf; |
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110 %! plotmatrix (randn (100, 3), 'g+'); |
8127 | 111 |
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112 |
8127 | 113 function plotmatrixdelete (h, d, ax) |
114 for i = 1 : numel (ax) | |
115 hc = ax(i); | |
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116 if (isaxes (hc) && strcmpi (get (hc, "beingdeleted"), "off")) |
8127 | 117 parent = get (hc, "parent"); |
118 ## If the parent is invalid or being deleted, then do nothing | |
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119 if (ishandle (parent) && strcmpi (get (parent, "beingdeleted"), "off")) |
10549 | 120 delete (hc); |
8127 | 121 endif |
122 endif | |
123 endfor | |
124 endfunction | |
125 | |
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126 function [h, ax, p, pax] = __plotmatrix__ (bigax, varargin) |
8127 | 127 have_line_spec = false; |
128 have_hist = false; | |
129 parent = get (bigax, "parent"); | |
130 for i = 1 : nargin - 1 | |
131 arg = varargin{i}; | |
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132 if (ischar (arg) || iscellstr (arg)) |
8127 | 133 [linespec, valid] = __pltopt__ ("plotmatrix", varargin{i}, false); |
134 if (valid) | |
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135 have_line_spec = true; |
10549 | 136 linespec = varargin(i); |
137 varargin(i) = []; | |
138 nargin = nargin - 1; | |
139 break; | |
8127 | 140 else |
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141 print_usage ("plotmatrix"); |
8127 | 142 endif |
143 endif | |
144 endfor | |
145 | |
146 if (nargin == 2) | |
147 X = varargin{1}; | |
148 Y = X; | |
149 have_hist = true; | |
150 elseif (nargin == 3) | |
151 X = varargin{1}; | |
152 Y = varargin{2}; | |
153 else | |
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154 print_usage ("plotmatrix"); |
8127 | 155 endif |
156 | |
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157 if (rows (X) != rows (Y)) |
8127 | 158 error ("plotmatrix: dimension mismatch in the arguments"); |
159 endif | |
160 | |
161 [dummy, m] = size (X); | |
162 [dummy, n] = size (Y); | |
163 | |
164 h = []; | |
165 ax = []; | |
166 p = []; | |
167 pax = []; | |
168 | |
169 xsize = 0.9 / m; | |
170 ysize = 0.9 / n; | |
171 xoff = 0.05; | |
172 yoff = 0.05; | |
173 border = [0.130, 0.110, 0.225, 0.185] .* [xsize, ysize, xsize, ysize]; | |
174 border(3:4) = - border(3:4) - border(1:2); | |
175 | |
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176 for i = 1 : m |
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177 for j = 1 : n |
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178 pos = [xsize * (i - 1) + xoff, ysize * (n - j) + yoff, xsize, ysize]; |
8127 | 179 tmp = axes ("outerposition", pos, "position", pos + border, |
10549 | 180 "parent", parent); |
8127 | 181 if (i == j && have_hist) |
10549 | 182 pax = [pax ; tmp]; |
183 [nn, xx] = hist (X(:, i)); | |
184 tmp = bar (xx, nn, 1.0); | |
185 p = [p; tmp]; | |
8127 | 186 else |
10549 | 187 ax = [ax ; tmp]; |
188 if (have_line_spec) | |
189 tmp = plot (X (:, i), Y (:, j), linespec); | |
190 else | |
191 tmp = plot (X (:, i), Y (:, j), "."); | |
192 endif | |
193 h = [h ; tmp]; | |
8127 | 194 endif |
195 endfor | |
196 endfor | |
197 endfunction | |
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198 |