Help plotting world map with 192x144 matrix of data?

Question

Katia Piscina 2021-8-12

0
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https://ww2.mathworks.cn/matlabcentral/answers/897157-help-plotting-world-map-with-192x144-matrix-of-data

回答： Anshika Chourasia 2021-12-29

I have a mat file with sensitivity data for the globe. The matrix is 192x144 (longitude x latitude). I need to plot a global map with this data. I know it should be relatively simple, but when I try to plot it using worldmap and geoshow it comes up as all zeros. This is my code:

 data = load('bkohl_A.mat');  % data
        A = struct2cell(data);  % change from struct to double input matrix
        out = cat(2,A{:});
        rv = [0.4, 90, 0]   % grid resolution and corner
        worldmap('World');
        geoshow(out, rv, 'displaytype', 'texturemap'); % plot data
        load coastlines;
        plotm(coastlat,coastlon) % plot coastlines

I have tried plotting a test using rand(192,144) and it worked, but when I plotted zeros(192,144) and then changed the first few rows to 1's it didn't. (so I had a 192 x 144 matrix of zeros with the first 10 rows 1 but it still showed on the map as all zeros).

I have no idea what I'm doing wrong and I've looked through the documentation but couldn't find anything to help. Any help would be appreciated!!