How do I display different colormap for subplots?

Question

UTKARSH VERMA 2022-9-19

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https://ww2.mathworks.cn/matlabcentral/answers/1807995-how-do-i-display-different-colormap-for-subplots

评论： UTKARSH VERMA 2022-9-20

采纳的回答： Adam Danz

HI all,

I am plotting 6 subplots in one figure in arrangement as 2 rows and 3 colums.

I want two colorbar with different colormap for every row.

How can I do it?

Thanks in advance.

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Answer 1

Adam Danz 2022-9-19

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https://ww2.mathworks.cn/matlabcentral/answers/1807995-how-do-i-display-different-colormap-for-subplots#answer_1056485

Use tiledlayout instead of subplot
Assign the colormap to the axes using the axes handles
Using tiledlayout, position the colorbars to the east|west|north|south

Full demo of these 3 steps

tcl = tiledlayout(2,3); % STEP 1

ax = gobjects(1,6);

for i = 1:6

ax(i) = nexttile();

peaks(15);

if i>3

colormap(ax(i),'hot') % STEP 2

else

colormap(ax(i),'cool')

end

z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2) z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2) z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2) z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2) z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2) z = 3*(1-x).^2.*exp(-(x.^2) - (y+1).^2) ... - 10*(x/5 - x.^3 - y.^5).*exp(-x.^2-y.^2) ... - 1/3*exp(-(x+1).^2 - y.^2)

% STEP 3

cb1 = colorbar(ax(3));

cb1.Layout.Tile = 'east';

cb1.Label.String = 'Vanilla Ice';

cb1 = colorbar(ax(6));

cb1.Layout.Tile = 'east';

cb1.Label.String = 'MC Hammer';

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Adam Danz 2022-9-19

Indeed!

Call the clim function for each axis specifying the same limits since you're using 1 colorbar scale for those axes.

UTKARSH VERMA 2022-9-20

Thanks Adam!

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Answer 2

vamshi sai yele 2022-9-19

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https://ww2.mathworks.cn/matlabcentral/answers/1807995-how-do-i-display-different-colormap-for-subplots#answer_1056550

Hello,

I understood that you want to display different colors in a subplot.

I have tried it from my end and below is the solution for the same.

x=0:0.1:10; 
y1 = cos(x)
y2 = sin(x)
subplot(2,2,1)
plot(x,y1,'Color','r') ;
colorbar
subplot(2,2,2)
plot(x,y2,'Color','r') ;
colorbar
subplot(2,2,3)
plot(x,y1,'Color','b') ;
colorbar
subplot(2,2,4)
plot(x,y2,'Color','b') ;
colorbar

In this example we have used 2x2 subplot and assigned red color to first row and blue color to second row. In this way we can set colors to individual plots as well.

We may also include different styled markers with different colors on the graph line. For such more options and better understanding of this concept, kindly refer to the following resources.

Resource-1

Resource-2

Resource-3

Hope you find it helpful!