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

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MathWorks Support Team 2011-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/92584-how-to-hide-the-grid-lines-behind-a-marker-in-map-axes-using-gridm-function-in-mapping-toolbox-3-2

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.

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Answer 1

MathWorks Support Team 2011-2-14

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/92584-how-to-hide-the-grid-lines-behind-a-marker-in-map-axes-using-gridm-function-in-mapping-toolbox-3-2#answer_101934

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));