- Merge the data matrices into one cell array in MATLAB
- Load the map PNG into MATLAB using imread function
Plotting in contoursclice/slice
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Hi, I am having
longitude=-180:5:180;latitude=-90:5:90;Data= matrix[73x37]. Like this I am having 12 matrixs.
I want to plot each matrix on global map (https://www.asu.cas.cz/~bezdek/vyzkum/rotating_3d_globe/figures/elevation_2d_map_Geoid_height_EGM2008_nmax500_BlueWhiteOrangeRed_px0650_pacific.png)
with 4 maps in single image (similar to contourslice/sclie function).
Please assist me how to plot the data.
Thanking you
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回答(3 个)
Arka
2023-3-7
Hi,
You can use the geoshow function to plot the data on the global map.
This is the process of doing it:
map = imread('path/to/map.png');
3. Create a new figure and set its size to the dimensions of the map like so:
figure('Units', 'pixels', 'Position', [0 0 size(map,2)*2 size(map,1)*2]);
4. Loop over the cell array of data matrices, and use geoshow to plot the data on the map. You can also use subplot or tiledlayout to have multiple maps in a single image.
for i=1:12
subplot(x,y,j); %replace x and y with the desired layout, and j with the map number you are referring to
geoshow(latitude, longitude, data{i}, 'DisplayType', 'texturemap');
hold on;
imshow(map);
end
geoshow displays the data as a texture on top of the map, and imshow displays the map in the background.
To learn more about geoshow and imshow, you can refer to the MathWorks documentations linked below:
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Shaik Ghouse Basha
2023-3-7
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Arka
2023-3-7
Is it possible for you to share the matrices and arrays that you are using? It will be easier for me to test the code on my end and help you out better.
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