Replace value that are associated to a location by nan

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Ricardo Duarte
Ricardo Duarte 2021-10-20
编辑： Matt J 2021-10-20
Dear all,
I have a question that I hope you can help me.
I have a map of sound pressure levels (spl) in which I patched a white band using countour command as you may see in this figure.
Brifelly, I used surf(longitude,latitude,SPL_dB) to plot the spl levels and then I used c2=contourf(longitude,latitude,elevation', [100 100],'facecolor',[1 1 1]) to create the white band, where elevation is the bathymetry of the area.
However, now I would like to delete or replace by NaN all the values in my spl matrix that are covered by that white band.
How can I do it?
Thank you very much

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Matt J
Matt J 2021-10-20
编辑：Matt J 2021-10-20
spl(0<= elevation & elevation<=100)=nan;

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