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matlabcolor-picker

ColorPicker in matlab

I want to get the RGB value of the selected color from ColorPicker in Matlab. For example to display the ColorPicker I use:

pp2 = com.mathworks.mlwidgets.graphics.ColorPicker(0,0,'');
[j1,c1]=javacomponent(pp2,[450,260,30,20],gcf);

After that, how can I get the selected value?

Solution

  • Use j1.Value. That is a java.awt.Color, and you can get the RGB values with j1.Value.getRed(), j1.Value.getGreen(), and j1.Value.getBlue(). These values are in the range [0, 255].

    Another way is to use the getRGBComponents() method:

    colour = j1.Value.getRGBComponents([]);

    Here, the values are in the range [0, 1] (cf. Converting Java vectors to Matlab arrays)