Consider A matrix as:
A=[0 0 1 ; 0 1 1 ; 1 1 2]
if I use "imagesc(A)" command, it will be shown as the enclosed file (by using colormap(hot)).
My question is that how can I define that for elements of A which are in the range of 0=
To create a custom colormap, specify map as a three-column matrix of RGB triplets where each row defines one color. An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range [0,1]. A value of 0 indicates no color and a value of 1 indicates full intensity. For example, this is a colormap with five colors: black, red, green, blue, and white.
mymap = [0 0 0
1 0 0
0 1 0
0 0 1
1 1 1];
Use mymap as the colormap for the figure.
colormap(mymap);
A=[0 0 1 ; 0 1 1 ; 1 1 2]
B=zeros(size(A,1),size(A,2),3);
for i=1:size(A,1)
for j=1:size(A,2)
if A(i,j) < 1
B(i,j,2)=255;
elseif A(i,j) == 1
B(i,j,1)=255;
else
B(i,j,3)=255;
end
end
end
imshow(B,[])
This is a simple solution.
@ Gabor
Thanks a lot. It works well with my simple example. I shout try it with the complicated real example.
@ Hossein
Thank you. Your method is really simple and interesting!
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