学习数学建模的插值与拟合
%%绘制原图

x = 1:5;
y = 1:3;
wendu = [82 81 80 82 84;
79 63 61 65 81;
84 84 82 85 86];
%mesh(x,y,wendu)

%%开始插值

xi = 1:0.2:5;
yi = 1:0.2:3;
zi = interp2(x,y,wendu,xi',yi,'cubic');
mesh(xi,yi,zi)