MATLAB: save geospatial polygons in a *.kml file

After generating the poligons vertices and defined their faces, I've plotted the polygons with the patch function:

pp = patch('Faces',faces,'Vertices',vertices);

and then I've defined the patches colors:

set(pp,'FaceColor','flat',...
       'FaceVertexCData',cdata,...
       'CDataMapping','direct',...
       'EdgeAlpha',.4,'EdgeColor','b')

Getting the following Matlab plot:

Now, I would like to visualize these polygons with Google Earth, but I don't know how.

I've tried the function kmlwrite, but I could pass to it only the polygons' vertices's coordinates, generating a kml file with all points and no polygon, as shown below:

The question is: wow can I write geospatial polygons (and their colors) into a .kml file with kmlwrite function?

Thanks

Answer 1

[Alfredo]

I've found the solution of my problem in the KML ToolBox:

< https://www.mathworks.com/matlabcentral/fileexchange/34694-kml-toolbox-v2-3 https://www.mathworks.com/matlabcentral/fileexchange/34694-kml-toolbox-v2-3>

in particular in the k.poly3 function.

Thanks to the author Rafael Oliveira https://www.mathworks.com/matlabcentral/fileexchange/authors/115634

[T S]

How did you enter the 'Faces' data into the k.poly3 function? It appears to only accept X,Y,Z coordinates along with a few visual modifiers.

Answer 2

[Rob Comer]

With Mapping Toolbox and MATLAB R2016a or later, you can use the kmlwritepolygon function.

[Polsak Tothong]

How can we use kmlwritepolygon when input have multiple polygons. Matlab function seems to write one polygons at a time only

Answer 3

[Rob Comer]

See the example Write Polygon Data to KML File on the kmlwrite reference page.