# Custom colour bar, excluding the Blue from RGB.

조회 수: 1 (최근 30일)
Jigsaw 2020년 1월 16일
댓글: Star Strider 2020년 1월 17일
I made a custom colour bar where 100 fell exactly at green and 200 at red. Anything from 0 to 100 along with their colours in insignificant and I'd prefer they do not show up in the colour bar. That being said, I would specifically like to have the colour bar such that it starts at the lowest (green) at 100 and ends at the highest (red) at 200.
I used the following code for the image.
figure()
A = [200 200 200 200 200; 200 200 200 200 200; 200 200 100 200 200; 200 200 200 200 200; 200 200 200 200 200];
Percent_matrix = flipud (A);
Percent_Interp = imresize(Percent_matrix,200,'bilinear');
pcolor(Percent_Interp)
caxis([0 200])
colormap( CustomColourMap );
colorbar();

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### 채택된 답변

Star Strider 2020년 1월 16일
편집: Star Strider 2020년 1월 16일
Define ‘CustomColourMap’ as:
CustomColourMap = @(x) [linspace(0,1,x).' linspace(1,0,x).' zeros(x,1)];
then to use it:
CustomColourMap = @(x) [linspace(0,1,x).' linspace(1,0,x).' zeros(x,1)];
figure()
A = [200 200 200 200 200; 200 200 200 200 200; 200 200 100 200 200; 200 200 200 200 200; 200 200 200 200 200];
Percent_matrix = flipud (A);
Percent_Interp = imresize(Percent_matrix,200,'bilinear');
pcolor(Percent_Interp)
caxis([100 200])
colormap( CustomColourMap(64) );
colorbar();
produces:
EDIT —
Corrected typographical error.
##### 댓글 수: 2없음 표시없음 숨기기
Jigsaw 2020년 1월 17일
The result is perfectly the way i wanted it. Nice of you to display the final image after using the updated code.
Thank you.
Cheers!
Star Strider 2020년 1월 17일
As always, my pleasure!
Thank you! The plot is the intent of your Question and my Answer, so posting it is necessary!

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### 추가 답변 (1개)

Stijn Haenen 2020년 1월 16일
Maybe you can try this:
h=figure();
A = [200 200 200 200 200; 200 200 200 200 200; 200 200 100 200 200; 200 200 200 200 200; 200 200 200 200 200];
Percent_matrix = flipud (A);
Percent_Interp = imresize(Percent_matrix,200,'bilinear');
pcolor(Percent_Interp)
caxis([0 200])
colorbar();
h.Children(1).Limits=[100 200];
set(h,'Colormap',[Colormap_data]) % colormap data should be RBG codes: [[0.2422,0.1504,0.66030;0.2444,0.1534,0.6728;0.2464,0.1569,0.6847; ..... ]

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