Matlab uses plotting method for data simulation and simulation

In matlab, we can use a lot of plotting methods to simulate and approximate the original data

The procedure is at the end of the article

It can be seen that the original data is obtained

If the original data is approximated with the real data, the results can be obtained as follows

It can be seen that this time the drawing point is better

Some friends will say, how to connect them in a straight line? There is a way. The result is as follows

Programs

clc
clear
close all

load('capall.mat')
x1=cap5(1:16)+rand(1,16);
figure
plot(x1,'->')
holdon

xx=[]
yy=[]
for i=1:16
[x,x2] = ginput(1)
plot(x,x2,'-*')
xx=[xx,x]
yy=[yy,x2]
hold on
end

figure
plot(xx,yy,'-*')
hold on
plot(x1)
legend('seconds','real')