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expm.m: new tests
author John W. Eaton <jwe@octave.org>
date Mon, 10 Jan 2011 14:50:33 -0500
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1 ## Copyright (C) 2007, 2009 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} {} scatter (@var{x}, @var{y})
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21 ## @deftypefnx {Function File} {} scatter (@var{x}, @var{y}, @var{s})
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22 ## @deftypefnx {Function File} {} scatter (@var{x}, @var{y}, @var{c})
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23 ## @deftypefnx {Function File} {} scatter (@var{x}, @var{y}, @var{s}, @var{c})
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24 ## @deftypefnx {Function File} {} scatter (@var{x}, @var{y}, @var{s}, @var{c}, 'filled')
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25 ## @deftypefnx {Function File} {} scatter (@var{x}, @var{y}, @var{s}, @var{c}, @var{style})
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26 ## @deftypefnx {Function File} {} scatter (@var{x}, @var{y}, @var{s}, @var{c}, @var{prop}, @var{val})
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27 ## @deftypefnx {Function File} {} scatter (@var{h}, @dots{})
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28 ## @deftypefnx {Function File} {@var{h} =} scatter (@dots{})
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29 ##
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30 ## Plot a scatter plot of the data. A marker is plotted at each point
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31 ## defined by the points in the vectors @var{x} and @var{y}. The size of
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32 ## the markers used is determined by the @var{s}, which can be a scalar,
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33 ## a vector of the same length of @var{x} and @var{y}. If @var{s} is not
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34 ## given or is an empty matrix, then the default value of 8 points is used.
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35 ##
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36 ## The color of the markers is determined by @var{c}, which can be a string
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37 ## defining a fixed color, a 3 element vector giving the red, green and blue
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38 ## components of the color, a vector of the same length as @var{x} that gives
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39 ## a scaled index into the current colormap, or a @var{n}-by-3 matrix defining
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40 ## the colors of each of the markers individually.
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41 ##
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42 ## The marker to use can be changed with the @var{style} argument, that is a
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43 ## string defining a marker in the same manner as the @code{plot} command.
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44 ## If the argument 'filled' is given then the markers as filled. All
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45 ## additional arguments are passed to the underlying patch command.
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46 ##
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47 ## The optional return value @var{h} provides a handle to the patch object
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48 ##
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49 ## @example
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50 ## @group
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51 ## x = randn (100, 1);
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52 ## y = randn (100, 1);
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53 ## scatter (x, y, [], sqrt(x.^2 + y.^2));
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54 ## @end group
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55 ## @end example
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56 ##
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57 ## @seealso{plot, patch, scatter3}
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58 ## @end deftypefn
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59
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60 function retval = scatter (varargin)
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61
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62 [h, varargin, nargin] = __plt_get_axis_arg__ ("scatter", varargin{:});
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63
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64 if (nargin < 2)
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65 print_usage ();
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66 else
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67 oldh = gca ();
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68 unwind_protect
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69 axes (h);
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70 newplot ();
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71 tmp = __scatter__ (h, 2, "scatter", varargin{:});
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72 unwind_protect_cleanup
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73 axes (oldh);
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74 end_unwind_protect
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75 endif
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76
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77 if (nargout > 0)
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78 retval = tmp;
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79 endif
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80
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81 endfunction
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82
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83
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84 %!demo
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85 %! x = randn (100, 1);
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86 %! y = randn (100, 1);
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87 %! scatter (x, y, "r");
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88
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89 %!demo
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90 %! x = randn (100, 1);
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91 %! y = randn (100, 1);
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92 %! scatter (x, y, [], sqrt(x.^2 + y.^2));
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93
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94 %!demo
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95 %! rand_10x1_data1 = [0.171577, 0.404796, 0.025469, 0.335309, 0.047814, 0.898480, 0.639599, 0.700247, 0.497798, 0.737940];
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96 %! rand_10x1_data2 = [0.75495, 0.83991, 0.80850, 0.73603, 0.19360, 0.72573, 0.69371, 0.74388, 0.13837, 0.54143];
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97 %! x = rand_10x1_data1;
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98 %! y = rand_10x1_data2;
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99 %! s = 10 - 10*log (x.^2 + y.^2);
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100 %! h = scatter (x, y, s, s, "s", "filled");
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101
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102 %!demo
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103 %! rand_10x1_data3 = [0.42262, 0.51623, 0.65992, 0.14999, 0.68385, 0.55929, 0.52251, 0.92204, 0.19762, 0.93726];
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104 %! rand_10x1_data4 = [0.020207, 0.527193, 0.443472, 0.061683, 0.370277, 0.947349, 0.249591, 0.666304, 0.134247, 0.920356];
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105 %! x = rand_10x1_data3;
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106 %! y = rand_10x1_data4;
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107 %! s = 10 - 10*log (x.^2 + y.^2);
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108 %! h = scatter (x, y, [], "r", "s", "filled");
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109
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110 %!demo
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111 %! rand_10x1_data5 = [0.777753, 0.093848, 0.183162, 0.399499, 0.337997, 0.686724, 0.073906, 0.651808, 0.869273, 0.137949];
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112 %! rand_10x1_data6 = [0.37460, 0.25027, 0.19510, 0.51182, 0.54704, 0.56087, 0.24853, 0.75443, 0.42712, 0.44273];
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113 %! x = rand_10x1_data5;
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114 %! y = rand_10x1_data6;
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115 %! s = 10 - 10*log (x.^2 + y.^2);
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116 %! h = scatter (x, y, [], "r", "s");
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117