How to find the linear distance between two points say (x,y) and (m,n) on an image?

Hi..How can we find the linear distance between any two points on an image?Can we do this using any inbuilt function??or can this be done in any other way??plz help..

[Fernanda Rivera]

You can use the function pdist2 such as:

value=pdist2([x m],[y n],'euclidean'); %obtaining euclidean distance

Also if it works better for you, you can develop the formula:

value=sqrt((x-m)^2 + (y-n)^2); %euclidean distance.

[María Peñas Leonor]

how could I do to show the line of that distance with plot?

Thanks

Answer 1

[Oliver Woodford]

p1 = [x; y];
p2 = [m; n];
d = norm(p1 - p2);