Adding map of the east coast to plotted lat/longs

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charles atlas
charles atlas 2015-4-9
回答： Kelly Kearney 2015-4-13
All,
I have a GUI that plots a number of lat/longs all over the east coast and the gulf.
What I want is to underlay a map on the plotted lat/long positions.
Does anyone know how to do that?
If there is a way to do that with a normal figure, then maybe I can figure out how to implement that into my GUI.
R/, C. Atlas

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回答（2 个）

Thomas Koelen
Thomas Koelen 2015-4-9
map=imread(mapimage);
imshow(map);
hold on
plot(positions,'-')
I'm not sure what kind of filetypes you have so I can't anser fully but have you tried this?
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charles atlas
charles atlas 2015-4-13
This is probably going to sound like a really stupid question, but: - What is mapimage denoting in your above code? - by positions do you mean the lat and longitudes in a 2-by-X matrix? With X denoting the number of positions that I want to plot?

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Kelly Kearney
Kelly Kearney 2015-4-13
Do you have the Mapping Toolbox? Do you actually have the data for a map already... geotiff, shapefile, or something like that?
If yes to the Mapping Toolbox, it comes with a few datasets with coastline info (coast.mat, conus.mat, landareas.shp, usastatelo.shp, usastatehi.shp) as well as functions for reading in higher-resolution data that you can download separately.
If you don't have access to the Mapping Toolbox, I recommend m_map. It provides several tools for setting up a basemap for plots.

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