How to get RGB values using MATLAB LEGO Mindstorms EV3 color sensor?

I know that readColor() will output the color that is read from the color sensor but I was wondering if there is any way to output the actual RGB values that is read.

Answer 1

[Matthew Kuo]

Yes! Go to the folder C:\MATLAB\SupportPackages\R2015a\legomindstormsev3io\toolbox\realtime\targets\ev3io. Yours may be slightly different depending on where you installed it and what version of Matlab you have. Open colorSensor.m and scroll down until you see

methods (Hidden = true)
    result = readColorRGB(obj,format)

Delete the line that says (Hidden = true). Now when you call readColorRGB, you will get a struct with the RGB values. For example:

result = readColorRGB(mycolorsensor);
% result(1) is the red value, result(2) is the green value, result(3) is the blue value

[Deepansh Bhatia]

Hey! I was looking for this solution, and I went to the colorSensor.m file but I found this:

    methods (Static, Hidden = true)
        % convert color ID to string
        function result = convertColorID(id)
            switch id
                case 0
                    result = 'none';
                case 1
                    result = 'black';
                case 2
                    result = 'blue';
                case 3
                    result = 'green';
                case 4
                    result = 'yellow';
                case 5
                    result = 'red';
                case 6
                    result = 'white';
                case 7
                    result = 'brown';
                otherwise
                    result = 'none';
            end
        end

    end %END of static methods

What exactly do I delete in order to get RGB values? Thanks.

[Katie Red]

It should be line 89 . I found the same thing you found at first . It's there .