How to add a 2D line to a surf plot
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parham kianian
on 17 Mar 2020
Commented: Tobias Bertsch
on 14 Jun 2024
The following figure shows the x-y view of a surf plot. How can I add a 2D line to this type of plots. For example I have added a black curve to it using Window10 paint. I want to do this in MATLAB.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/277775/image.png)
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Walter Roberson
on 17 Mar 2020
If you use pcolor() instead of surf() then it will give you the overhead view like that, and it will make all of the z values 0. That makes it easy to just plot() on top of the pcolor()
To plot a line on top of a surf() plot, you need to use plot3() specifying a z coordinate that is greater than any z coordinate of the data. If you accidentally use 0 as the z coordinate or use plot() instead of plot3(), then the line would be hidden behind any part of the surface that had a positive z value.
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