How to make land surface black using ETOPO data
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Hi All,
I'm trying to create an map using ETOPO data that shows ocean bathymetry, but blacks out anything above sea level (i.e., land). For example, the region around New Zealand. I want NZ to be entirely black, and Z to be o (sea level) to the sea floor.
So far, I can only make the land boundaries black using geoshow, but not the entire land surface.
Any ideas?
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Answers (1)
Carl
on 25 Jul 2017
Edited: Carl
on 25 Jul 2017
Hi Vincent. You can try setting the axes "CLim" property, and using a custom colormap. This will let you set everything above a certain Z value (elevation) to be some color (black). For example:
% After plotting your data with geoshow
clim = get(gca,'CLim');
clim(2) = 0;
set(gca,'CLim',clim)
newmap = colormap;
newmap(end,:) = [0 0 0];
colormap(newmap)
See the documentation below for more on the "CLim" property:
and using colormaps:
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