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

Question

MoonPie1 2017-2-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/325082-i-have-a-straight-line-x1-y1-x2-y2-i-want-to-know-the-coordinates-of-all-the-points-present-on-t

评论： MoonPie1 2017-2-17

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?

2 个评论
显示无隐藏无

Stephen23 2017-2-15

"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 2017-2-17

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

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KSSV 2017-2-17

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/325082-i-have-a-straight-line-x1-y1-x2-y2-i-want-to-know-the-coordinates-of-all-the-points-present-on-t#answer_255160

在 MATLAB Online 中打开

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')