How do I plot a US state using the mapping toolbox?

Question

Shane 2014-7-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/141500-how-do-i-plot-a-us-state-using-the-mapping-toolbox

评论： Sourov Kumar Mondal 2024-2-27

采纳的回答： Supreeth Subbaraya

I need to plot California and then have to label points on the map based on latitude and longitude coordinates.

I got mapping toolbox for the first time and am confused about how to do this.

I checked the general help section and it didn't help much.

So I was able to plot California but still don't know how to plot points.

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Answer 1

Supreeth Subbaraya 2014-8-5

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https://ww2.mathworks.cn/matlabcentral/answers/141500-how-do-i-plot-a-us-state-using-the-mapping-toolbox#answer_147521

在 MATLAB Online 中打开

To plot a US State and points on it, you could something as shown below:

%Read vector features and attributes from shapefile
cali = shaperead('usastatehi', 'UseGeoCoords', true,'Selector',{@(name) strcmpi(name,'California'), 'Name'});
axesm mercator; %Define Map axes
geoshow(cali); %Display map
plotm(lat,lon,'Color','r','Marker','.','MarkerSize',50); %plot point at [lat,lon] location

You have to assign appropriate values to the lat and lon variables. The above code plots the California state with a point at lat = 39 and lon = -123.6234. Similarly you can use the other plotting functions available here.

Some useful links,