How to hide the grid lines behind a marker in map axes using GRIDM function in Mapping Toolbox 3.2 (R2010b)?

When I use GRIDM for a map containing a marker, the grid lines appear in front of the marker.

axesm('pcarree','MapLatLimit',[-90 90],'MapLonLimit',[-90 90]);

gridm

plotm(0,0,'o','markersize',18,'markerfacecolor','g');

I want to hide the grid lines behind the marker.

Answer 1

[MathWorks Support Team]

The grid lines appear in front of the marker as the default ‘ZData’ property of grid lines is positive. Set the ‘ZData’ values of grid lines to be negative.

axesm('pcarree','MapLatLimit',[-90 90],'MapLonLimit',[-90 90]);

Hg = gridm;

plotm(0,0,'o','markersize',18,'markerfacecolor','g');

% Get the size of 'Zdata' 

Z1n=size(get(Hg(1),'ZData'));

Z2n=size(get(Hg(2),'ZData'));

% set the  ‘ZData’ values to -1

set(Hg(1),'ZData',-ones(Z1n));

set(Hg(2),'ZData',-ones(Z2n));