Calculate distance between 2 points using array

Hi, how can I find the distance between 2 points using this equation? eqn=sqrt{{X_{i+1}-X_{i}}^2+{{Y_{i+1}-Y_{i}}^2}};

I need to use a matrix that is defined by the user (it cannot be changed) so any coordinates can be entered.

numberOfCoord=input('Please Input the Number of Coordinates:');

if numberOfCoord < 4
    disp (['Error']);
    return
end
    
data = zeros(2, numberOfCoord);

for i= 1:1:numberOfCoord
    data(1, i)=input('Please Enter X Coordinate:');
    data (2, i)=input ('Please enter Y Coordinate:');
end

if i < 0
    disp (['Error']);
    return
end

any tips or help to solve this would be great thanks :))

[Turlough Hughes]

This code requires atleast 4 points, are you looking for distances from a given point to every other point?

[Antonin Ponchon De Saint Andre]

it would be between each pair of corners (i.e. distance between point 1 & 2, 2 & 3, 3 & 4, 4 & 1 IF 4 points are entered in the code)

Answer 1

[Matt J]

vecnorm(   diff(data,1,2) ,  2, 1)

[Antonin Ponchon De Saint Andre]

worked smoothly cheers !

[Matt J]

I'm glad, but please Accept-click the answer to certify that it worked for you.