Overlaying two contour plots on same axis

Question

James Wyatt 2020-3-30

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/514163-overlaying-two-contour-plots-on-same-axis

评论： Elie Hatem 2020-8-31

I am trying to plots two contours on top of each other

Code is below, cannot work out why it is not working.

figure(1)
[c1,h1]=contourf(long1,lat1,squeeze(asal(:,:,36))',[34.6:0.01:34.9],'LineColor','none')
cmocean('balance')
colorbar
hold on
[c2,h2]=contour(long1,lat1,squeeze(pot_dens(:,:,36))',[26.80:.01:27.0],'k--')
clabel(c2,h2)

I have attached the different plots seperately, and the combined result.

I want just the sal plot as is, with the potential density contours overlaid

Thanks in advance

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James Wyatt 2020-6-22

编辑：darova 2020-6-22

在 MATLAB Online 中打开

Hi Elie,

I have some code that works kind of well:

figure(1)
ax(1)=axes;
contourf(long1,lat1,squeeze(PV(:,:,34))',[0.05*10^-10:0.05*10^-10:1*10^-10],'LineColor','none')
cmocean('balance')
hc(1)=colorbar;
ax(2)=axes;
[c2,h2]=contour(long1,lat1,squeeze(dyn_height(:,:,34))',[10:.1:15],'c--')
clabel(c2,h2)
set(ax(2), 'XAxisLocation','top',...
           'YAxisLocation','right',...
           'Color','none'); 
pos=get(ax(1),'Position');
set(ax,'Position',[pos(1) pos(2) 0.9*pos(3) pos(4)]);
cpos=get(hc(1),'position');
set(hc(1),'position',[cpos(1)+0.05 cpos(2:4)]);
title('PV at 500m depth in SEI Ocean with dynamic height overlay')
xlabel('Longitude')
ylabel('latitude')

This does give an overlay, however I'm sure there is probably a simpler way of doing it.

Elie Hatem 2020-8-31

Thank you !

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Answer 1

Pratheek Punchathody 2020-8-31

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/514163-overlaying-two-contour-plots-on-same-axis#answer_487391

在 MATLAB Online 中打开

Hi James,

As per my understanding you are looking for plotting two contour plots on the same axis.

Here is the reference code where two contour plots are overlaid on the same axis.

%%code starts here 
Z1 = peaks; %Sample data 1 
Z2 = peaks.^2; %Sample data 2 
hold on 
contourf(Z1,'-r'); 
contour(Z2,'--k'); 
colormap('map') 
axis equal 
%%code ends here 