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UTKARSH VERMA on 1 Sep 2021
Commented: Diana Grisolia on 11 Apr 2024 at 11:51
Accepted Answer: Robert U
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Hi all,
I am using subplots to plot multiple contour plots in a single figure using for loop and using colorbar with 'Position' but it doesn't give the common values for all the plots. I have tried different solution which was given to other Matlab users but none worked.
fig=figure(1)
clf
for i=1:24
subplot(6,4,i)
contourf(x,y,z)
end
h=axes(fig,'visible','off');
h.Title.Visible='on';
h.XLabel.Visible='on';
h.YLabel.Visible='on';
ylabel(h,'yaxis','FontWeight','bold');
xlabel(h,'xaxis','FontWeight','bold');
title(h,'title');
colormap(jet)
c=colorbar;
c.Position = [0.93 0.168 0.022 0.7];
Can you help me with this problem?
Thanks in advance!
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Accepted Answer
Robert U on 1 Sep 2021
Open in MATLAB Online
Hi UTKARSH VERMA,
have a look at caxis():
[x, y] = meshgrid(0:0.1:1,0:0.1:1);
z = rand(11,11,24);
minColorLimit = min(min(min(z))); % determine colorbar limits from data
maxColorLimit = 24*max(max(max(z)));
fig=figure(1);
for i=1:24
sph{i} = subplot(6,4,i,'Parent',fig);
contourf(sph{i},x,y,i.*z(:,:,i)) % changes due to illustration purposes
caxis(sph{i},[minColorLimit,maxColorLimit]); % set colorbar limits
end
h = axes(fig,'visible','off');
h.Title.Visible = 'on';
h.XLabel.Visible = 'on';
h.YLabel.Visible = 'on';
ylabel(h,'yaxis','FontWeight','bold');
xlabel(h,'xaxis','FontWeight','bold');
title(h,'title');
c = colorbar(h,'Position',[0.93 0.168 0.022 0.7]); % attach colorbar to h
colormap(c,'jet')
caxis(h,[minColorLimit,maxColorLimit]); % set colorbar limits
Kind regards,
Robert
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UTKARSH VERMA on 1 Sep 2021
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https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_1715874
Thanks Robert!!
It's working perfectly.
Arnav Gupta on 1 Jul 2022
Direct link to this comment
https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_2246095
Hey robert I executed this code but noticed that once a single colorbar comes for all subplots no matter how much i change its limits , there is no change in the subplots. Is it becuase the subplots limits are already specified in for loop and outer colorbar limits has no relation with these subplots??
Robert U on 23 Aug 2022
Direct link to this comment
https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_2327960
Hi Arnav Gupta,
exactly. The created colorbar is an individual object on the figure and will not change no matter what you do with you subplots. In order to change that you would have to add a listener to the colorbar that will recalculate on colormap changes within the subplots. That's far more work than recalculating the whole figure and adjust the colorbar limits.
Kind regards,
Robert
Ashfaq Ahmed on 15 May 2023
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https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_2747354
How can I remove the xtics and yticks? @Robert U
Ashfaq Ahmed on 15 May 2023
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https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_2747359
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I am writing this code -
%load NBayTEMPdetmnth.mat
clf;
fig=figure(1);
t = tiledlayout(4,3); t.TileSpacing = 'compact';
for i = 1:12
nexttile
[~, hContour]=contourf(flip(NBayTEMPdetmnth(:,:,i)),25,'-','linewidth',0.5);
hold on;
end
h = axes(fig,'visible','off');
h.Title.Visible = 'off';
h.XLabel.Visible = 'off';
h.YLabel.Visible = 'off';
c = colorbar(h,'Position',[0.93 0.168 0.022 0.7]); % attach colorbar to h
colormap(c,'jet')
caxis(h,[-5 20]); % set colorbar limits
Robert U on 16 May 2023
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https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_2748234
Open in MATLAB Online
Hi @Ashfaq Ahmed,
Try this:
NBayTEMPdetmnth = rand([256,256,12]);
clf;
fig=figure(1);
t = tiledlayout(4,3); t.TileSpacing = 'compact';
for i = 1:12
ah = nexttile;
[~, hContour]=contourf(ah,flip(NBayTEMPdetmnth(:,:,i)),25,'Linestyle','none','linewidth',0.5);
ah.XTick = [];
ah.YTick = [];
end
h = axes(fig,'visible','off');
h.Title.Visible = 'off';
h.XLabel.Visible = 'off';
h.YLabel.Visible = 'off';
c = colorbar(h,'Position',[0.93 0.168 0.022 0.7]); % attach colorbar to h
colormap(c,'jet')
caxis(h,[-5 20]); % set colorbar limits
Kind regards,
Robert
Shuchi on 13 Jun 2023
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https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_2780534
Thanks for the code.
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More Answers (1)
Adam Danz on 20 Jun 2023
Edited: Adam Danz on 20 Jun 2023
Open in MATLAB Online
This is easy with tiledlayout (MATLAB R2020b or later)
tcl = tiledlayout(3,4);
for i = 1:prod(tcl.GridSize)
nexttile()
[X,Y,Z] = peaks(2+i);
contourf(X,Y,Z)
clim([-7,6]) % Important! Set the same color limits
end
cb = colorbar();
cb.Layout.Tile = 'east'; % Assign colorbar location
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Diana Grisolia on 11 Apr 2024 at 11:51
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https://www.mathworks.com/matlabcentral/answers/1444554-how-to-set-common-colorbar-for-multiplots#comment_3128406
Thnks! It worked perfectly!!
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