Issues running basic geoshow examples from the Mapping Toolbox

Question

Phil 2025-2-7

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https://ww2.mathworks.cn/matlabcentral/answers/2173779-issues-running-basic-geoshow-examples-from-the-mapping-toolbox

回答： Phil 2025-2-7

采纳的回答： Phil

在 MATLAB Online 中打开

I am having trouble running some of the basic examples from the Matlab Mapping toolbox

Here is an example straight from the documentation. Using the online run command, it runs no problem.

landAreas = readgeotable("landareas.shp");

row = landAreas.Name == "Africa and Eurasia";

landAreasSubset = landAreas(row,:);

landAreasSubset.Shape

ans =

geopolyshape with properties: NumRegions: 2 NumHoles: 22 Geometry: "polygon" CoordinateSystemType: "geographic" GeographicCRS: [1x1 geocrs]

worldmap([-45 80],[-25 195]);

geoshow(landAreasSubset)

However when I run it locally this is what I get:

Error using geoshow
Expected S to be one of these types:
geopoint, mappoint, geoshape, mapshape
Instead its type was table.
Error in geovectorshow (line 93)
validateattributes(S, {'geopoint', 'mappoint', 'geoshape','mapshape'}, ...
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in geoshow (line 274)
h = showFcn(varargin{:});
^^^^^^^^^^^^^^^^^^^^^^^^^
Error in test (line 16)
geoshow(landAreasSubset)
^^^^^^^^^^^^^^^^^^^^^^^^

I am getting all sorts of errors on geoshow for other simple scripts.

I am running MATLAB 2014b on Apple Silicone. I have re-installed MATLAB completely to check if it's some issue with the Mapping toolbox

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Steve Eddins 2025-2-7

You said that you are running MATLAB R2014b. Is that correct? I wouldn't expect that version to get past the call to readgeotable, which wasn't added until R2021b.

If that was a typo, and you are really running a recent version of MATLAB and Mapping Toolbox, then I suspect you are unintentionally calling an old version of geoshow. Try this to see what you have:

>> which -all geoshow

Phil 2025-2-7

Hello! That was indeed a typo, but your advice helped me find the problem. I was using an older version of geoshow. Once the new version was used, it all ran as fine. Thank you.

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