I have a straight line(X1,Y1) (X2,Y2). I want to know the coordinates of all the points present on the straight line. I have another random line along the straight line. I have to calculate the Mean Squared Error between the two lines. How do i do it

I have a straight line(X1,Y1) (X2,Y2). I want to know the coordinates of all the points present on the straight line. I have another random line along the straight line. I have to calculate the Mean Squared Error between the two lines. How do i do it?

[Stephen23]

"I want to know the coordinates of all the points present on the straight line"

There are infinite points between any two points on that line. How do you hope to store infinite points on your computer?

[MoonPie1]

I would want to store the points present at 0.25mm gap.

Answer 1

[KSSV]

p1 = [0 0] ;
p2 = [1 2] ;
% get slope 
m = (p2(2)-p1(2))/(p2(1)-p1(1)) ;
% get between points 
xi = p1(1):0.01:p2(1) ;
yi = p1(2)+m*(xi-p1(1)) ;
figure
p12 = [p1 ;p2] ;
plot(p12(:,1),p12(:,2),'r')
hold on
plot(xi,yi,'.b')

[MoonPie1]

Thank you very much