What are the colors generated when R is always 255 and the value of G and B vary from 0 to 255 (8-bits)?

When I see the RGB color model, my results matched with the gradation of the colors within the red wheel (i.e. magenta, yellow, white, and red). Should it be like that?

Answer 1

[Image Analyst]

Yes. You will get a bunch of colors. Those plus more.

[Walter Roberson]

Yes.

[G,B] = ndgrid(uint8(0:255));
RGB = cat(3,uint8(255) * ones(256,256,'uint8'), G, B);
image(RGB)