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fid = fopen('data.dat'); % èªå·±æ¹åå
C = textscan(fid, '%d8 %d8 %f32', 'HeaderLines',1);
fclose(fid);
subs = cell2mat(C(:,1:2));
vals = cell2mat(C(:,3));
vals = reshape(vals, [80 80]).';
surf(vals);
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