How to generate sinusoidal color fringes in MATLAB??

Hi. I am new to MATLAB, Can any one help me in getting the solution. I'm attempting to generate sinusoidal color fringe patterns, using MATLAB.

i want to generate sinusoidal fringes each with a single color like Red, Green, and Blue with different phases. And add these different patterns to form a single fringe pattern.

i tried the below code, but i don't want to use colormap here. If i use colormap, while adding i am unable to get colored fringes as Red, Blue, Green. can you please check the below code, it would be helpful.

I'm struggling to find a way in which i can go about generating color fringes as shown in the below figure.

Any help would be appreciated.

if i add three fringes, i want to get output like this......

Thanks....

center = [0,0]; %[0,0] is the middle of the image, [pi,pi] is the lower right

orientation =pi; %radians (pi/4 = 45 degrees)

width = .5;  %1/e half width of Gaussian

spatialFrequency = 10;  %spatial frequency of Sinewave carrier (cycles/image)

phase = pi;     %spatial phase of sinewave carrier (radians)

contrast = 1;   %contrast ranges from 0 to 1;

n = 201;        %resolution of the image

[X,Y] = meshgrid(linspace(-pi,pi,n)); % Use meshgrid to define matrices X and Y that range from -pi to pi;

ramp = cos(orientation)*(X-center(1)) + sin(orientation)*(Y-center(2));

sinusoid1 = contrast*sin(spatialFrequency*ramp-phase);

figure(1)

imagesc(sinusoid1)

mymap1 = [1 0 0
    1 1 1
    1 0 0
    1 1 1
    1 0 0];

colormap(mymap1);

axis off;axis equal ;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
phase2 = pi/2;
sinusoid2= contrast*sin(spatialFrequency*ramp-phase2);
figure(2)
imagesc(sinusoid2)

mymap2 = [0 1 0
    1 1 1
    0 1 0
    1 1 1
    0 1 0];

colormap(mymap2);

axis off; axis equal; 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
phase3 = 2*pi;
sinusoid3= contrast*sin(spatialFrequency*ramp-phase3);
figure(3)
imagesc(sinusoid3)

mymap3 = [0 0 1
    1 1 1
    0 0 1
    1 1 1
    0 0 1];

colormap(mymap3)

axis off; axis equal;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% adding all three color fringes

addedgrating= sinusoid1+sinusoid2+sinusoid3;
figure(4);
imagesc(addedgrating);

axis off; axis equal;

[DGM]

Duplicate:

https://www.mathworks.com/matlabcentral/answers/1930335-how-to-generate-sinusoidal-color-fringes-in-matlab