Distance of Latlon based locations in an array

Hi,

I have a matrix. 1st column have latt and second with lon. Now, how do i calculate the distances between each other?

35.3333 25.10555

35.33361111 25.07666

35.3316 25.157

35.33861 25.1325

35.3375 25.136

35.335 25.134166

I have tried distance function, it works between two points. Soon try to select it from the array, it shows errors.

I tired: [arclen,az] = distance(Locations (1,:), Locations (2,:)), Locations is the name of my matrix.

The erros message:

Undefined function 'real' for input arguments of type 'table'.

Error in parseDistAzInputs (line 104)

lat1 = real(lat1);

Error in distance (line 95)

units, insize, useAngularDistance] = parseDistAzInputs(varargin{:});

Can you please help me to write the code to find distance between each other fo these points?

[KSSV]

What you need is pdist2. Read about it.

[Rakibul Islam Rony]

Thanks

Answer 1

[Martin Vatshelle]

You should not use normal distance for lat-lon points. The reason is that for latitude 1 degree is approximately the same distance (around 110 km). While 1 degree of longitude is different depending on how far north you are.

There are many functions out there, e.g.

https://se.mathworks.com/matlabcentral/fileexchange/38812-latlon-distance

Then you need to loop over all pairs somehow, and call this function

Below is a sample code

% make points as cell array
points = {[35.3333	25.10555];
[35.33361111	25.07666];
[35.3316	25.157];
[35.33861	25.1325];
[35.3375	25.136];
[35.335	25.134166]};

% generate all pairs
pairs = nchoosek(1:length(lat),2);
p1 = points(pairs(:,1),:);
p2 = points(pairs(:,2),:);

% compute distance
dist = cellfun(@lldistkm,p1,p2);

[Rakibul Islam Rony]

Thank U, the idea helped.

[darova]

accept the answer