How to find all 0 values

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Rascal07
Rascal07 2018-2-7
回答： KSSV 2018-2-13
Hi I have plotter a pcolor and then surf plot of X,Y,Z. X and Y is the latitude and longitude and Z is elevation. I want to add a black contour line at elevation =0 but cant seem to figure it out (ive tried using contour3) does anyone know how to do this? or know how to find all elevation =0 values maybe using a find loop so i can plot this on the same figure? thanks in advance!

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KSSV
KSSV 2018-2-13
Use pcolor and on this use contour to plot your elevation heights.

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