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How to create a spherical graph with points that are latitude and longitude?

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Sarah Weatherly
Sarah Weatherly 2017-7-26
评论： Chad Greene 2017-8-2
I have a list of locations given in lat and long. How can I graph them in a sphere so that it looks like a globe?

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Santa Raghavan
Santa Raghavan 2017-7-26
MathWorks provides a Mapping Toolbox to analyze and visualize geographic information.
Here is a useful link: Mapping toolbox
To plot and visualize a geographical location on a globe, see this example: Mesh over a globe

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Chad Greene
Chad Greene 2017-8-2
If you don't have the Mapping Toolbox, you can always use the standard Matlab function sph2cart to represent the Earth as a sphere of radius 6371 km like this:
lat = 180*rand(500,1)-90;
lon = 360*rand(500,1);
T = 15+10*cosd(lat);
[x,y,z] = sph2cart(deg2rad(lon),deg2rad(lat),6371);
scatter3(x,y,z,40,T,'filled');
axis tight equal
cmocean thermal
Above I used the cmocean thermal colormap, but you can skip that line if you prefer. To put those data points in context, I'll use border data from my borders function, convert the borders to cartesian coordinates the same way as above, and plot with the scattered points:
hold on
C = load('borderdata.mat');
for k = 1:246
[xtmp,ytmp,ztmp] = sph2cart(deg2rad(C.lon{k}),deg2rad(C.lat{k}),6371);
plot3(xtmp,ytmp,ztmp,'k')
end
axis off

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