Matlab根据坐标点进行绘制散点图并拟合成图像可以使用cftool函数，下面以二维数据拟合进行举例：
（1）首先输入数据点
x=[0.20,2,4.01,5.99,8.08,9.98,11.96,14.00,15.99,18.00,19.98,21.98,23.99,25.97,28.01,30.00,32.04,33.99,35.98,37.99,39.99,42.00,43.99,45.99];
y=[37.46,41.36,43.96,44.56,42.80,38.44,29.79,17.07,6.12,5.03,12.87,23.19,31.74,37.89,42.12,44.22,44.52,42.75,37.95,28.44,15.52,5.17,5.79,14.55];
（2）在工作区间输入cftool，然后点回车键，可以得到如下的显示：
然后对弹出来的页面进行相应的操作，如X,Y，拟合形式等，如下图所示：
