Plot polygons defined by the specific points on map

Hi, I'm using mapping toolbox to display some geographical data.

After plotting some lines using 'geoplot'; 'geoshow' or 'patchm' are not working.

How do I plot polygons in geographic coordinates?

I've tried this:

lats= [30 32 31; 29 30 31];
lons = [-102 -103 -104; -100 -103 -101];
geoplot([30 32], [-102 -104])
for i = size(lats,1)
    geoshow(lats(i,:),lons(i,:),'DisplayType','polygon');
end

And this is not what I want;

https://mathworks.com/matlabcentral/answers/487959-overlay-polygon-on-geographic-axes

Thank you for your help.

Answer 1

[millercommamatt]

There are many ways to do this, but this works.

lats= [30 32 31; 29 30 31];
lons = [-102 -103 -104; -100 -103 -101];
[numrows, ~] = size(lats);
usamap([28 33], [-105 -99]);  % create map axis
for ii=1:numrows
    patchesm(lats(ii,:),lons(ii,:),'b');  % blue polygons
end

[AJ]

Thanks, but patchesm cannot be used with geoplot either..

[millercommamatt]

I think understand what you're trying to do now. You want to use geo plot types and non-geo plot types together.

The example that you said you didn't want, combined a GeographicAxes with a second hidden axis. I don't think you can combine use of the geo plot type and non-geo plot types any other way. A further complication is that the rulers of a GeographicAxes aren't linear. I don't know how you would get point in one axis to align with the other. Until Mathworks provide better cross compatability for working with GeographicAxes, I'd stick with map axes.