Question
I have plotted a secton of the globe using ETOPO data. I want to plot points onto this surface, but the following "geoshow" command does not work. Does anyone know how to plot like this? Thanks! ax = worldmap([20 50],[-130 -65]); mstruct = gcm; latlim = [20 50]; lonlim = [-130 -65]; [Z, refvec] = etopo('etopo1_ice_c.flt', 1, latlim, lonlim); load coast geoshow(Z, refvec, 'DisplayType', 'surface'); hold on; %Plot Stations A = load('Stations.txt'); for ii=1:length(A) geoshow(A(ii,1),A(ii,2),'Marker','^','MarkerEdgeColor','k','Markersize',4); hold on; end
Expert Answer
Prashant Kumar
PhD Expert
Answered Aug 16, 2026
The issue is that when you use display type 'surface' you get a 3D surface. The markers are plotted with Z=0, so they end up hidden. The simplest solution is to use display type 'texturemap'.
geoshow(Z, refvec, 'DisplayType', 'texturemap');
Alternatively, you can give the markers a Z value large enough for them to appear above the surface.
geoshow(40:45, -80:-75, 'DisplayType', 'point', 'Marker', '^', ...
'MarkerEdgeColor','k','Markersize',4, 'Zdata', 10000*ones(6,1))
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