Plot data from matrix longitude, latitude and variable

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Pepe Grillo 2021-5-11

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评论： Pepe Grillo 2021-5-12

采纳的回答： Chunru

data_1.txt

Hi!

I have the matrix, data_1 (attached), and I want to make a map from South Atlantic with coast lines. The matrix is longitude, latitude and the variable as columns. Each lat and lon represent positions where is data, but I would like to have an interpolation.

Thanks!

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Chunru 2021-5-12

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https://ww2.mathworks.cn/matlabcentral/answers/827820-plot-data-from-matrix-longitude-latitude-and-variable#answer_697750

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x = linspace(min(data(:,1)), max(data(:,1)), 200);
y = linspace(min(data(:,2)), max(data(:,2)), 200);
[xg, yg] = meshgrid(x, y);
zg = griddata(data(:,1), data(:,2), data(:, 3), xg, yg);
p = pcolor(xg, yg, zg);
p.EdgeColor='none';