I have a MxM matrix RegionsMap whose components are integer numbers between 1 and 4. The element RegionsMap(k,j) represents a point in the complex plane, x(k)+i*y(j) (x and y are vectores I previously defined). I want to plot every one of these complex numbers in the complex plane in such a way that: If RegionsMap(k,j) is 1 I color the associated point in blue, if it is 2 I color the associated point in red,...etc (green and yellow for 3 and 4).
How can I achieve this? Any help will be appreciated! Thanks