MATLAB: How to find the distance between one slope and several points

distance between point and linefor loopmatrix

I have slope AB, where
A=[x1,y1], B=[x2,y2], and point C=[x0,y0].
In order to find the distance between the point C and slope AB, I have used the formula below:
d=(abs(((x2-x1)*(y1-y0))-((x1-x0)*(y2-y1)))/(sqrt((x2-x1)^2+(y2-y1)^2)));
I can find the distance between slope and one point, but If I have several points, I have a problem in result.
For example:
I have a matrix A as below, where the first row represents A=[x1,y1], and the last row represents B=[x2,y2]:
A =
   2     2
   3     1
   5     4
   7     8
  10     2
In matrix A, rows 2,3,4 represent 3 different points.
So I need to find a distance between slope and 3 points.
Actually, I did this code, but the result shows 4 values instead of 3 values.
l=length(A);
x1=A(1,1); y1=A(1,2);
x2=A(l,1); y2=A(l,2);
for i=2:l-1
x(i)=A(i,1); 
y(i)=A(i,2);
d(i)=(abs(((x2-x1)*(y1-y(i))-((x1-x(i))*(y2-y1)))/(sqrt((x2-x1)^2+(y2-y1)^2))));
end
Could anyone check my code or help to get necessary answer?

Best Answer

x0=A(2:4,1)
y0=A(2:4,2)
d=(abs(((x2-x1).*(y1-y0))-((x1-x0).*(y2-y1)))./(sqrt((x2-x1)^2+(y2-y1)^2)));
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