plotting second y axis with pcolor command

Question

Richard 2012-4-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/34172-plotting-second-y-axis-with-pcolor-command

Is it possible to prodce a pcolor plot with 2 yaxis?

Consider the following example:

clear all
temp =  1 + (20-1).*rand(365,12);
depth = 1:12;
time =1:365;
data2 = 1 + (60-1).*rand(12,1); 
time2 = [28,56,84,124,150,184,210,234,265,288,312,342];
figure;
pcolor(time,depth,temp');axis ij; shading interp
hold on 
plot(time2,data2,'w','linewidth',3);

Instead of plotting the second dataset on the same y axis I would like it to placed on its own y-axis, similar to the plotyy command. How can this be achieved?

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Answer 1

Aaditya Kalsi 2012-4-1

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/34172-plotting-second-y-axis-with-pcolor-command#answer_42844

在 MATLAB Online 中打开

You can do this by creating another axis on top of the existing one in the same position. You can then play with transparencies.

Ex.:

 figure;
 temp =  1 + (20-1).*rand(365,12);
 depth = 1:12;
 time =1:365;
 data2 = 1 + (60-1).*rand(12,1); 
 time2 = [28,56,84,124,150,184,210,234,265,288,312,342];
 % create the first axis
 pcolor(time, depth, temp'); axis ij;
 % get axis position
 axPos = get(gca, 'Position');
 axLim = get(gca, 'XLim');
 % Create a new axis that is transparent where data is not present
 newAx = axes('Position', axPos);
 plot(newAx, time2,data2,'linewidth',3);
 set(newAx, 'color', 'none');
 set(newAx, 'XLim', axLim)