用matlab画散点图并用光滑曲线连接(样条插值)

上接：http://blog.youkuaiyun.com/cantjie/article/details/70216642

用matlab画散点图并用光滑曲线连接

%exp10.m
clc,clear
format short
[Num]=xlsread('exp10',1,'A2:D11')
x=Num(:,1);
y1=Num(:,2);
y2=Num(:,3);
y3=Num(:,4);
xx=linspace(20,120);
yy1=spline(x,y1,xx);
yy2=spline(x,y2,xx);
yy3=spline(x,y3,xx);
% 画出散点图
plot(x,y1,'*',x,y2,'o',x,y3,