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compass.m: Overhaul function. * scripts/plot/compass.m: Reduce arrowhead to 20% of body length. Recode input validation to be simpler.
author Rik <rik@octave.org>
date Thu, 19 Sep 2013 13:48:54 -0700
parents 77bec442a35a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ## Copyright (C) 2006-2012 Michel D. Schmid
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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} {} stem (@var{y})
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21 ## @deftypefnx {Function File} {} stem (@var{x}, @var{y})
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22 ## @deftypefnx {Function File} {} stem (@dots{}, @var{linespec})
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23 ## @deftypefnx {Function File} {} stem (@dots{}, "filled")
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24 ## @deftypefnx {Function File} {} stem (@dots{}, @var{prop}, @var{val}, @dots{})
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25 ## @deftypefnx {Function File} {} stem (@var{hax}, @dots{})
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26 ## @deftypefnx {Function File} {@var{h} =} stem (@dots{})
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27 ## Plot a 2-D stem graph.
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28 ##
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29 ## If only one argument is given, it is taken as the y-values and the
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30 ## x-coordinates are taken from the indices of the elements.
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31 ##
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32 ## If @var{y} is a matrix, then each column of the matrix is plotted as
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33 ## a separate stem graph. In this case @var{x} can either be a vector,
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34 ## the same length as the number of rows in @var{y}, or it can be a
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35 ## matrix of the same size as @var{y}.
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36 ##
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37 ## The default color is @qcode{"b"} (blue), the default line style is
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38 ## @qcode{"-"}, and the default marker is @qcode{"o"}. The line style can
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39 ## be altered by the @code{linespec} argument in the same manner as the
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40 ## @code{plot} command. If the @qcode{"filled"} argument is present the
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41 ## markers at the top of the stems will be filled in. For example,
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42 ##
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43 ## @example
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44 ## @group
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45 ## x = 1:10;
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46 ## y = 2*x;
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47 ## stem (x, y, "r");
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48 ## @end group
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49 ## @end example
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50 ##
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51 ## @noindent
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52 ## plots 10 stems with heights from 2 to 20 in red;
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53 ##
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54 ## Optional property/value pairs may be specified to control the appearance
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55 ## of the plot.
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56 ##
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57 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
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58 ## rather than the current axes returned by @code{gca}.
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59 ##
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60 ## The optional return value @var{h} is a handle to a "stem series" hggroup.
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61 ## The single hggroup handle has all of the graphical elements comprising the
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62 ## plot as its children; This allows the properties of multiple graphics
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63 ## objects to be changed by modifying just a single property of the
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64 ## "stem series" hggroup.
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65 ##
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66 ## For example,
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67 ##
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68 ## @example
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69 ## @group
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70 ## x = [0:10]';
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71 ## y = [sin(x), cos(x)]
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72 ## h = stem (x, y);
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73 ## set (h(2), "color", "g");
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74 ## set (h(1), "basevalue", -1)
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75 ## @end group
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76 ## @end example
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77 ##
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78 ## @noindent
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79 ## changes the color of the second "stem series" and moves the base line
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80 ## of the first.
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81 ##
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82 ## Stem Series Properties
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83 ##
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84 ## @table @asis
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85 ## @item linestyle
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86 ## The linestyle of the stem. (Default: @qcode{"-"})
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87 ##
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88 ## @item linewidth
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89 ## The width of the stem. (Default: 0.5)
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90 ##
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91 ## @item color
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92 ## The color of the stem, and if not separately specified, the marker.
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93 ## (Default: "b" [blue])
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94 ##
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95 ## @item marker
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96 ## The marker symbol to use at the top of each stem. (Default: @qcode{"o"})
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97 ##
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98 ## @item markeredgecolor
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99 ## The edge color of the marker. (Default: @qcode{"color"} property)
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100 ##
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101 ## @item markerfacecolor
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102 ## The color to use for "filling" the marker. (Default: @qcode{"none"}
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103 ## [unfilled])
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104 ##
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105 ## @item markersize
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106 ## The size of the marker. (Default: 6)
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107 ##
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108 ## @item baseline
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109 ## The handle of the line object which implements the baseline. Use @code{set}
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110 ## with the returned handle to change graphic properties of the baseline.
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111 ##
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112 ## @item basevalue
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113 ## The y-value where the baseline is drawn. (Default: 0)
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114 ## @end table
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115 ## @seealso{stem3, bar, hist, plot, stairs}
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116 ## @end deftypefn
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117
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118 ## Author: Michel D. Schmid <michaelschmid@users.sourceforge.net>
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119 ## Adapted-by: jwe
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120
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121 function h = stem (varargin)
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122
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123 if (nargin < 1)
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124 print_usage ();
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125 endif
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126
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127 htmp = __stem__ (false, varargin{:});
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128
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129 if (nargout > 0)
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130 h = htmp;
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131 endif
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132
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133 endfunction
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134
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135
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136 %!demo
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137 %! clf;
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138 %! y = 1:10;
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139 %! stem (y);
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140 %! title ('stem plot of y-values only');
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141
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142 %!demo
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143 %! clf;
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144 %! x = 1:10;
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145 %! y = 2*x;
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146 %! stem (x, y);
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147 %! title ('stem plot of x and y-values');
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148
d65670971cbc [project @ 2007-12-04 03:03:54 by jwe]
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149 %!demo
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150 %! clf;
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jwe
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151 %! x = 1:10;
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152 %! y = 2*x;
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153 %! h = stem (x, y, 'r');
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154 %! title ('stem plot with modified color');
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155
d65670971cbc [project @ 2007-12-04 03:03:54 by jwe]
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156 %!demo
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157 %! clf;
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jwe
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158 %! x = 1:10;
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Rik <octave@nomad.inbox5.com>
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159 %! y = 2*x;
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160 %! h = stem (x, y, '-.k');
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161 %! title ('stem plot with modified line style and color');
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162
d65670971cbc [project @ 2007-12-04 03:03:54 by jwe]
jwe
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163 %!demo
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Rik <octave@nomad.inbox5.com>
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164 %! clf;
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jwe
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165 %! x = 1:10;
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166 %! y = 2*x;
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Rik <rik@octave.org>
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167 %! h = stem (x, y, '-.ks');
77bec442a35a Overhaul stem family of plot functions.
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168 %! title ('stem plot with modified line style, color, and marker');
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169
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170 %!demo
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171 %! clf;
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jwe
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172 %! x = 1:10;
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173 %! y = 2*x;
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174 %! h = stem (x, y, 'filled');
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175 %! title ('stem plot with "filled" markers');
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176
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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177 %!demo
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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178 %! clf;
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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179 %! x = 1:10;
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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180 %! y = 2*x;
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181 %! h = stem (x, y, 'markerfacecolor', [1 0 1]);
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182 %! title ('stem plot modified with property/value pair');
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David Bateman <dbateman@free.fr>
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183
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David Bateman <dbateman@free.fr>
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184 %!demo
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185 %! clf;
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186 %! x = (0 : 10)';
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David Bateman <dbateman@free.fr>
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187 %! y = [sin(x), cos(x)];
961d4c52ffae Convert stem and stem3 to use stem series objects
David Bateman <dbateman@free.fr>
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188 %! h = stem (x, y);
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189 %! set (h(2), 'color', 'g');
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190 %! set (h(1), 'basevalue', -1);
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191 %! title ('stem plots modified through hggroup handle');
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192
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Ben Abbott <bpabbott@mac.com>
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193 %!demo
92811d110839 Update copies consistent subset of {x,y,z}data to children of the stem hggoup.
Ben Abbott <bpabbott@mac.com>
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194 %! clf;
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Ben Abbott <bpabbott@mac.com>
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195 %! N = 11;
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Ben Abbott <bpabbott@mac.com>
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196 %! x = 0:(N-1);
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197 %! y = rand (1, N);
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198 %! hs = stem (x(1), y(1));
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199 %! set (gca (), 'xlim', [1, N-1], 'ylim', [0, 1]);
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200 %! title ('stem plot data modified through hggroup handle');
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Ben Abbott <bpabbott@mac.com>
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201 %! for k=2:N
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202 %! set (hs, 'xdata', x(1:k), 'ydata', y(1:k))
92811d110839 Update copies consistent subset of {x,y,z}data to children of the stem hggoup.
Ben Abbott <bpabbott@mac.com>
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203 %! drawnow ();
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Ben Abbott <bpabbott@mac.com>
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204 %! pause (0.2);
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Ben Abbott <bpabbott@mac.com>
parents: 14363
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205 %! end
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206
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207 %!error stem ()
77bec442a35a Overhaul stem family of plot functions.
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208 %!error <can not define Z for 2-D stem plot> stem (1,2,3)
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209 %!error <X and Y must be numeric> stem ({1})
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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210 %!error <X and Y must be numeric> stem (1, {1})
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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211 %!error <inconsistent sizes for X and Y> stem (1:2, 1:3)
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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212 %!error <inconsistent sizes for X and Y> stem (1:2, ones (3,3))
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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213 %!error <inconsistent sizes for X and Y> stem (ones (2,2), ones (3,3))
77bec442a35a Overhaul stem family of plot functions.
Rik <rik@octave.org>
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214 %!error <No value specified for property "FOO"> stem (1, "FOO")
77bec442a35a Overhaul stem family of plot functions.
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diff changeset
215