1 | function [out1,out2,out3] = ginput2(arg1)
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2 | %GINPUT Graphical input from mouse.
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3 | % [X,Y] = GINPUT(N) gets N points from the current axes and returns
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4 | % the X- and Y-coordinates in length N vectors X and Y. The cursor
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5 | % can be positioned using a mouse (or by using the Arrow Keys on some
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6 | % systems). Data points are entered by pressing a mouse button
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7 | % or any key on the keyboard except carriage return, which terminates
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8 | % the input before N points are entered.
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9 | %
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10 | % [X,Y] = GINPUT gathers an unlimited number of points until the
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11 | % return key is pressed.
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12 | %
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13 | % [X,Y,BUTTON] = GINPUT(N) returns a third result, BUTTON, that
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14 | % contains a vector of integers specifying which mouse button was
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15 | % used (1,2,3 from left) or ASCII numbers if a key on the keyboard
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16 | % was used.
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17 |
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18 | % Copyright (c) 1984-96 by The MathWorks, Inc.
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19 | % $Revision: 2.0 $ $Date: 2003/06/19 12:05:59 $
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20 |
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21 | % Fixed version by Jean-Yves Bouguet to have a cross instead of 2 lines
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22 | % More visible for images
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23 |
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24 | P = NaN*ones(16,16);
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25 | P(1:15,1:15) = 2*ones(15,15);
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26 | P(2:14,2:14) = ones(13,13);
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27 | P(3:13,3:13) = NaN*ones(11,11);
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28 | P(6:10,6:10) = 2*ones(5,5);
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29 | P(7:9,7:9) = 1*ones(3,3);
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30 |
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31 | out1 = []; out2 = []; out3 = []; y = [];
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32 | c = computer;
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33 | if ~strcmp(c(1:2),'PC') & ~strcmp(c(1:2),'MA')
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34 | tp = get(0,'TerminalProtocol');
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35 | else
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36 | tp = 'micro';
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37 | end
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38 |
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39 | if ~strcmp(tp,'none') & ~strcmp(tp,'x') & ~strcmp(tp,'micro'),
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40 | if nargout == 1,
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41 | if nargin == 1,
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42 | eval('out1 = trmginput(arg1);');
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43 | else
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44 | eval('out1 = trmginput;');
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45 | end
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46 | elseif nargout == 2 | nargout == 0,
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47 | if nargin == 1,
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48 | eval('[out1,out2] = trmginput(arg1);');
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49 | else
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50 | eval('[out1,out2] = trmginput;');
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51 | end
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52 | if nargout == 0
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53 | out1 = [ out1 out2 ];
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54 | end
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55 | elseif nargout == 3,
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56 | if nargin == 1,
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57 | eval('[out1,out2,out3] = trmginput(arg1);');
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58 | else
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59 | eval('[out1,out2,out3] = trmginput;');
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60 | end
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61 | end
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62 | else
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63 |
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64 | fig = gcf;
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65 | figure(gcf);
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66 |
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67 | if nargin == 0
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68 | how_many = -1;
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69 | b = [];
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70 | else
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71 | how_many = arg1;
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72 | b = [];
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73 | if isstr(how_many) ...
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74 | | size(how_many,1) ~= 1 | size(how_many,2) ~= 1 ...
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75 | | ~(fix(how_many) == how_many) ...
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76 | | how_many < 0
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77 | error('Requires a positive integer.')
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78 | end
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79 | if how_many == 0
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80 | ptr_fig = 0;
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81 | while(ptr_fig ~= fig)
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82 | ptr_fig = get(0,'PointerWindow');
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83 | end
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84 | scrn_pt = get(0,'PointerLocation');
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85 | loc = get(fig,'Position');
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86 | pt = [scrn_pt(1) - loc(1), scrn_pt(2) - loc(2)];
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87 | out1 = pt(1); y = pt(2);
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88 | elseif how_many < 0
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89 | error('Argument must be a positive integer.')
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90 | end
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91 | end
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92 |
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93 | pointer = get(gcf,'pointer');
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94 |
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95 | set(gcf,'Pointer','custom','PointerShapeCData',P,'PointerShapeHotSpot',[8,8]);
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96 | %set(gcf,'pointer','crosshair');
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97 | fig_units = get(fig,'units');
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98 | char = 0;
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99 |
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100 | while how_many ~= 0
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101 | % Use no-side effect WAITFORBUTTONPRESS
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102 | waserr = 0;
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103 | eval('keydown = wfbp;', 'waserr = 1;');
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104 | if(waserr == 1)
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105 | if(ishandle(fig))
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106 | set(fig,'pointer',pointer,'units',fig_units);
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107 | error('Interrupted');
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108 | else
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109 | error('Interrupted by figure deletion');
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110 | end
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111 | end
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112 |
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113 | ptr_fig = get(0,'CurrentFigure');
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114 | if(ptr_fig == fig)
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115 | if keydown
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116 | char = get(fig, 'CurrentCharacter');
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117 | button = abs(get(fig, 'CurrentCharacter'));
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118 | scrn_pt = get(0, 'PointerLocation');
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119 | set(fig,'units','pixels')
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120 | loc = get(fig, 'Position');
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121 | pt = [scrn_pt(1) - loc(1), scrn_pt(2) - loc(2)];
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122 | set(fig,'CurrentPoint',pt);
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123 | else
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124 | button = get(fig, 'SelectionType');
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125 | if strcmp(button,'open')
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126 | button = b(length(b));
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127 | elseif strcmp(button,'normal')
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128 | button = 1;
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129 | elseif strcmp(button,'extend')
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130 | button = 2;
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131 | elseif strcmp(button,'alt')
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132 | button = 3;
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133 | else
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134 | error('Invalid mouse selection.')
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135 | end
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136 | end
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137 | pt = get(gca, 'CurrentPoint');
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138 |
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139 | how_many = how_many - 1;
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140 |
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141 | if(char == 13) % & how_many ~= 0)
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142 | % if the return key was pressed, char will == 13,
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143 | % and that's our signal to break out of here whether
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144 | % or not we have collected all the requested data
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145 | % points.
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146 | % If this was an early breakout, don't include
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147 | % the <Return> key info in the return arrays.
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148 | % We will no longer count it if it's the last input.
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149 | break;
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150 | end
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151 |
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152 | out1 = [out1;pt(1,1)];
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153 | y = [y;pt(1,2)];
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154 | b = [b;button];
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155 | end
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156 | end
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157 |
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158 | set(fig,'pointer',pointer,'units',fig_units);
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159 |
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160 | if nargout > 1
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161 | out2 = y;
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162 | if nargout > 2
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163 | out3 = b;
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164 | end
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165 | else
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166 | out1 = [out1 y];
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167 | end
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168 |
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169 | end
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170 |
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171 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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172 | function key = wfbp
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173 | %WFBP Replacement for WAITFORBUTTONPRESS that has no side effects.
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174 |
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175 | % Remove figure button functions
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176 | fprops = {'windowbuttonupfcn','buttondownfcn', ...
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177 | 'windowbuttondownfcn','windowbuttonmotionfcn'};
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178 | fig = gcf;
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179 | fvals = get(fig,fprops);
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180 | set(fig,fprops,{'','','',''})
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181 |
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182 | % Remove all other buttondown functions
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183 | ax = findobj(fig,'type','axes');
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184 | if isempty(ax)
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185 | ch = {};
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186 | else
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187 | ch = get(ax,{'Children'});
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188 | end
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189 | for i=1:length(ch),
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190 | ch{i} = ch{i}(:)';
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191 | end
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192 | h = [ax(:)',ch{:}];
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193 | vals = get(h,{'buttondownfcn'});
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194 | mt = repmat({''},size(vals));
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195 | set(h,{'buttondownfcn'},mt);
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196 |
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197 | % Now wait for that buttonpress, and check for error conditions
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198 | waserr = 0;
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199 | eval(['if nargout==0,', ...
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200 | ' waitforbuttonpress,', ...
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201 | 'else,', ...
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202 | ' keydown = waitforbuttonpress;',...
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203 | 'end' ], 'waserr = 1;');
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204 |
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205 | % Put everything back
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206 | if(ishandle(fig))
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207 | set(fig,fprops,fvals)
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208 | set(h,{'buttondownfcn'},vals)
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209 | end
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210 |
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211 | if(waserr == 1)
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212 | error('Interrupted');
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213 | end
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214 |
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215 | if nargout>0, key = keydown; end
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216 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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