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Plot Regions of Robinson Frame and Grid Using Map Limits

This example shows how to plot four regions of Robinson frame and grid using map limits. Initially, each of the plots shows the entire world, FLatLimit is [-90 90], and FLonLimit is [-180 180] for each case. The frame quadrangle can encompass smaller regions, as well, in which case the shape is a section of a full-world outline or simply a quadrilateral with straight or curving sides.

Plot four quadrangles in the Robinson Projection, symmetric about prime meridian.

figure('color','white')
subplot(2,2,1);
axesm('MapProjection','robinson',...
    'Frame','on','Grid','on')
title('Lat [-90 90], Map lons [-180 180]','FontSize',10)
subplot(2,2,2);
axesm('MapProjection','robinson',...
    'MapLatLimit',[30 70],'MapLonLimit',[-90 90],...
    'Frame','on','Grid','on')
title('Lat [30 70], Lon [-90 90]','FontSize',10)
subplot(2,2,3);
axesm('MapProjection','robinson',...
    'MapLatLimit',[-90 0],'MapLonLimit',[-180 -30],....
    'Frame','on','Grid','on')
title('Lat [-90 0], Lon [-180 -30]','FontSize',10)
subplot(2,2,4);
axesm('MapProjection','robinson',...
    'MapLatLimit',[-70 -30],'MapLonLimit',[60 150],...
    'Frame','on','Grid','on')
title('Lat [-70 -30], Lon [60 150]','FontSize',10)

Plot the same regions but with frame limits altered after projecting. The projections are not centered on the prime meridian. Instead, the projections are symmetric about map limits.

figure('color','white')
h11 = subplot(2,2,1);
axesm('MapProjection','robinson',...
    'Frame','on','Grid','on')
title('Lat [-90 90], Lon [-180 180]')
h12 = subplot(2,2,2);
axesm('MapProjection','robinson',...
    'Frame','on','Grid','on')
setm(h12,'FLatLimit',[30 70],'FLonLimit',[-90 90])
title('Lat [30 70], Lon [-90 90]')
h21 = subplot(2,2,3);
axesm('MapProjection','robinson',...
    'Frame','on','Grid','on')
setm(h21,'FLatLimit',[-90 0],'FLonLimit',[-180 -30])
title('Lat [-90 0], Lon [-180 -30]')
h22 = subplot(2,2,4);
axesm('MapProjection','robinson',...
    'Frame','on','Grid','on')
setm(h22,'FLatLimit',[-70 -30],'FLonLimit',[60 150])
title('Lat [-70 -30], Lon [60 150]')

To create a symmetric frame in the lower right subplot, reset the map limits instead of the frame limits, but be sure to reset the origin.

setm(h22,'MapLonLimit',[60 150],'Origin',[])

Alter the properties of the frame, which is actually a patch with face color set to 'none'. Set the face color to 'cyan'.

setm(gca,'FFaceColor','cyan')