MATLAB

Can you help me fix the code, can't swap colors in a different dirrection

-----------------------------------------my code--------------------------------------------

clear; clc; clear all;

x = ones(256,256); %preallocate x for efficiency

%establish RGB range red = 0:255; green = 0:255; blue = 0:255;

for i = 1:256 red = 255-(i-1); for j = 1:256 %green = -(j-1)+(i-1); %green = 255-((-(j-1))^2+(255-(i-1))^2)^0.5; %green = 255-max(j-1,255-(i-1)); %green = ((i.^2)/(256))+((j.^2)/(256)); green = (i*(256-j))/256; blue = (j-1); %each cell in the 256x256 is asigned a different value for Red, %Green and Blue depending on its positon and layer x(i,j,3)=red; x(i,j,2)=green; x(i,j,1)=blue; %CORRECT end end

figure colormap gray %converts single-layer matrices to grayscale subplot(221); %plots the red channel in the top-left imagesc(uint8(x(:,:,1))); title('Red Layer');

subplot(222); %plots the green channel in the top-right imagesc(uint8(x(:,:,2))); title('Green Layer');

subplot(223); %plots the blue channel in the bottom-left imagesc(uint8(x(:,:,3))); title('Blue Layer');

subplot(224); %plots the layered color-gradient in the bottom-right imagesc(uint8(x)); title('Problem 2');

------------------------Problem statement--------------------------------------------------

Using the technique described above, create your own image, of size 256 x 256 pixels, which contains gradations of color. This time, the corners are (clockwise from the top left) purple, blue, green and red. The intermediate points are once again smoothly shaded from one end to the other. There is smoothness both horizontally and vertically, but NOT diagonally (see the individual layer images). You can see the image you should create below, as well as the figure with 4 subplots. Take a close look at the Green Layer!

create your own image, of size 256 x 256 pixels, which contains gradations of color. This time, the corners are (clockwise from the top left) purple, blue, green and red. The intermediate points are once again smoothly shaded from one end to the other There is smoothness both horizontally and vertically, but NOT diagonally (see the individual layer images). You can see the image you should create below, as well as the figure with 4 subplots. Take a close look at the Green Layer! Dlue Layer