对矩阵插值

转： https://blog.youkuaiyun.com/weixin_40283816/article/details/83240613

% 对矩阵插值
x = [1:2:9]; % 插值前矩阵的坐标
y = [1, 23; % 插值前矩阵的值
8,26;
16,131;
14,49;
4,77];
x1 = 1:1:9; % 插值后矩阵的坐标
y1 = interp1(x,y,x1);
figure;plot(x1,y1,’-o’)
hold on;stem(x,y)