function I = ImageFrom3DVector(v)
%% ImageFrom3DVector(v) Displays an image whose RGB-values are determined by the coordinates of v
% This is an example of a "loop",
% which creates a stack of three matrices
% containing integers that MATLAB can use
% as RGB pixel values in an image
for i = 1:3 % execute the line below 3 times
I(:,:,i) = uint8(repmat(v(i),600,900)); % repeat the number stored in v(i) across a 600x900 matrix
end % every loop statement needs an "end"
% Display the image stored in I
imshow(I);