Plot data sets with unique colors without using loop

My existing code which produces the desired results is as follows,

    for i = 1:k
        cluster = data(V==i,:);
        plot(cluster(:,1),cluster(:,2),'x');
    end

'data' is a 1000x2 double array containing x and y coordinates. V is a 1000x1 integer array with values between 1 to k i.e. there are k subsets of data in total

I need to plot the different subsets in different colors which matlab automatically assigns because of individual calls to plot.

Is there a better way to code this without using a loop?

Answer 1

[Image Analyst]

That uses a color order, which is predefined and which will repeat. To get unique colors you'd have to pass in the color:

for i = 1:k
        thisColor = rand(1, 3);
        cluster = data(V==i,:);
        plot(cluster(:,1), cluster(:,2), 'x', 'Color', thisColor, 'MarkerSize', 15);
end