griddata函数
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%使用griddata插值
A=[1.486,3.059,0.1;2.121,4.041,0.1;2.570,3.959,0.1;3.439,4.396,0.1...3.393,2.763,0.7];
x=A(:,1);
y=A(:,2);
z=A(:,3);
scatter(x,y,5,z)%散点图
figure
[X,Y,Z]=griddata...% x interpolation points
[Xi,Yi] = meshgrid(xi,yi); % create grid of x and y
Zi = griddata...% Zi = griddata(x,y,z,Xi,Yi, ‘nearest’) % triangle based nearest neighbor
% Zi = griddata(x,y,...hold on
plot3(x,y,z, ‘ko’) % show original data as well
hold off
title(‘Figure 18.10: Griddata