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annotate scripts/plot/draw/plotmatrix.m @ 20393:4e7f12a763cd stable

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doc: Remove typo of same word twice in a row. * data.cc (nzmax), mappers.cc (isinf), contourc.m, cylinder.m, ellipsoid.m: Remove typo of same word twice in a row.
author Rik <rik@octave.org>
date Tue, 12 May 2015 10:05:02 -0700
parents 777f26aa8e3e
children 83792dd9bcc1
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rev   line source
19898
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1 ## Copyright (C) 2008-2015 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} {} plotmatrix (@var{x}, @var{y})
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21 ## @deftypefnx {Function File} {} plotmatrix (@var{x})
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22 ## @deftypefnx {Function File} {} plotmatrix (@dots{}, @var{style})
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23 ## @deftypefnx {Function File} {} plotmatrix (@var{hax}, @dots{})
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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
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29 ##
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30 ## @example
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31 ## plot (@var{x}(:, i), @var{y}(:, j))
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32 ## @end example
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33 ##
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34 ## When called with a single argument @var{x} this is equivalent to
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35 ##
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36 ## @example
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37 ## plotmatrix (@var{x}, @var{x})
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38 ## @end example
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39 ##
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40 ## @noindent
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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))}.
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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}.
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49 ##
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50 ## The optional return value @var{h} provides handles to the individual
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51 ## graphics objects in the scatter plots, whereas @var{ax} returns the
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52 ## handles to the scatter plot axis objects.
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53 ##
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54 ## @var{bigax} is a hidden axis object that surrounds the other axes, such
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55 ## that the commands @code{xlabel}, @code{title}, etc., will be associated
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56 ## with this hidden axis.
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57 ##
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58 ## Finally, @var{p} returns the graphics objects associated with the histogram
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59 ## and @var{pax} the corresponding axes objects.
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60 ##
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61 ## Example:
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62 ##
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63 ## @example
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64 ## plotmatrix (randn (100, 3), "g+")
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65 ## @end example
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66 ##
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67 ## @seealso{scatter, plot}
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68 ## @end deftypefn
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69
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70 function [h, ax, bigax, p, pax] = plotmatrix (varargin)
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71
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72 [bigax2, varargin, nargin] = __plt_get_axis_arg__ ("plotmatrix", varargin{:});
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73
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74 if (nargin > 3 || nargin < 1)
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75 print_usage ();
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76 endif
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77
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78 oldfig = [];
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79 if (! isempty (bigax2))
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80 oldfig = get (0, "currentfigure");
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81 endif
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82 unwind_protect
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83 bigax2 = newplot (bigax2);
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84
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85 [h2, ax2, p2, pax2] = __plotmatrix__ (bigax2, varargin{:});
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86
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87 axes (bigax2);
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88 ctext = text (0, 0, "", "visible", "off",
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89 "handlevisibility", "off", "xliminclude", "off",
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90 "yliminclude", "off", "zliminclude", "off",
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91 "deletefcn", {@plotmatrixdelete, [ax2; pax2]});
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92 set (bigax2, "visible", "off");
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93
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94 unwind_protect_cleanup
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95 if (! isempty (oldfig))
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96 set (0, "currentfigure", oldfig);
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97 endif
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98 end_unwind_protect
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99
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100 if (nargout > 0)
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101 h = h2;
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102 ax = ax2;
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103 bigax = bigax2;
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104 p = p2;
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105 pax = pax2;
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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
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111 %!demo
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112 %! clf;
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113 %! plotmatrix (randn (100, 3), 'g+');
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114
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115
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116 function plotmatrixdelete (h, d, ax)
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117 for i = 1 : numel (ax)
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118 hc = ax(i);
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119 if (isaxes (hc) && strcmpi (get (hc, "beingdeleted"), "off"))
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120 parent = get (hc, "parent");
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121 ## If the parent is invalid or being deleted, then do nothing
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122 if (ishandle (parent) && strcmpi (get (parent, "beingdeleted"), "off"))
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123 delete (hc);
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124 endif
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125 endif
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126 endfor
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127 endfunction
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128
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129 function [h, ax, p, pax] = __plotmatrix__ (bigax, varargin)
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130 have_line_spec = false;
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131 have_hist = false;
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132 parent = get (bigax, "parent");
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133 for i = 1 : nargin - 1
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134 arg = varargin{i};
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135 if (ischar (arg) || iscellstr (arg))
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136 [linespec, valid] = __pltopt__ ("plotmatrix", varargin{i}, false);
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137 if (valid)
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138 have_line_spec = true;
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139 linespec = varargin(i);
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140 varargin(i) = [];
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141 nargin = nargin - 1;
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142 break;
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143 else
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144 print_usage ("plotmatrix");
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145 endif
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146 endif
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147 endfor
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148
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149 if (nargin == 2)
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150 X = varargin{1};
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151 Y = X;
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152 have_hist = true;
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153 elseif (nargin == 3)
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154 X = varargin{1};
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155 Y = varargin{2};
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156 else
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157 print_usage ("plotmatrix");
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158 endif
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159
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160 if (rows (X) != rows (Y))
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161 error ("plotmatrix: dimension mismatch in the arguments");
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162 endif
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163
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164 [dummy, m] = size (X);
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165 [dummy, n] = size (Y);
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166
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167 h = [];
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168 ax = [];
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169 p = [];
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170 pax = [];
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171
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172 xsize = 0.9 / m;
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173 ysize = 0.9 / n;
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174 xoff = 0.05;
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175 yoff = 0.05;
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176 border = [0.130, 0.110, 0.225, 0.185] .* [xsize, ysize, xsize, ysize];
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177 border(3:4) = - border(3:4) - border(1:2);
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178
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Julien Bect <julien.bect@supelec.fr>
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179 for i = 1 : m
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180 for j = 1 : n
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181 pos = [xsize * (i - 1) + xoff, ysize * (n - j) + yoff, xsize, ysize];
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182 tmp = axes ("outerposition", pos, "position", pos + border,
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183 "parent", parent);
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184 if (i == j && have_hist)
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185 pax = [pax ; tmp];
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186 [nn, xx] = hist (X(:, i));
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187 tmp = bar (xx, nn, 1.0);
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188 p = [p; tmp];
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189 else
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190 ax = [ax ; tmp];
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191 if (have_line_spec)
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192 tmp = plot (X (:, i), Y (:, j), linespec);
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193 else
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194 tmp = plot (X (:, i), Y (:, j), ".");
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195 endif
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196 h = [h ; tmp];
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197 endif
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198 endfor
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199 endfor
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200 endfunction
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Rik <rik@octave.org>
parents: 16814
diff changeset
201