how i can draw full line in scatter plot?

clear all

close all

clc

x1=[0.1 ,1.1;

6.8 ,7.1;

-3.5,-4.1;

2,2.7;

4.1 ,2.8;

3.1 ,5;

-0.8,-1.3;

0.9 ,1.2;

5 ,6.4;

3.9 ,4 ;

];

x2=[7.1 ,4.2;

-1.4 ,-4.3;

4.5 , 0;

6.3 , 1.6 ;

4.2 , 1.9 ;

1.4 , -3.2;

2.4 , -4 ;

2.5 , -6.1;

8.4 , 3.7 ;

4.1 , -2.2;

];

[m,n]=size(x1);

w=double(zeros(1,n+1));

w=double([0,0,0]);

w=perceptron(x1,x2,w,0.5);

scatter(x1(:,1),x1(:,2),'r');

hold on;

scatter(x2(:,1),x2(:,2),'g');

axis([-4 9 -6 10]);

line([0,-w(3)/w(1)],[-w(3)/w(2),0], 'Color', 'b');

[Scott MacKenzie]

I have no idea about the overall goal, but you can use lsline after each scatter function. You'll get a best-fitting line for each data set and it will be a "full line".