Do I need nested loops?

I am trying to create a small script that will allow me to expand the perimeter based off coordinates. The program is running through the variables correctly when I look at the workspace, but I can't get it to write the results to the structure multiple times. It will only write to the structure once. Am I missing a nested loop?

load 'lat_lon.mat'
new_coord = [];

for i = 1:length(lat_lon)
    1
    new_coord.Lat = [lat_lon(:,[1])];
    new_coord.Lon = [lat_lon(i:,[2])];

      2
      %Finds the radius of the Earth at given latitude
      radius = 6372 * cos(lat_lon(i,[1])/180 * pi)

      3
      %Converts given perimeter expansion to degrees
      lat_nat_deg = nm2deg(3.5, radius);
      new_coord.lat_exp = [lat_nat_deg];
      nat_deg = nm2deg(3.5);
      new_coord.lon_exp = [nat_deg];

      4
      new_coord.latitude = [lat_lon(i,[1]) + lat_nat_deg];

      5
      new_coord.longitude = [lat_lon(i,[2]) + nat_deg]

end

The lat_lon.mat is :

Lat_Long = [60.8427194, -042.7969500; ...

                  60.8646972, -042.5323889; ...

                  60.7640417, -042.5178639; ...

                  60.5882139, -042.8185056; ...

                  60.8080111, -042.8507500; ...

                  60.8069889, -042.8374167; ...

                  60.8083028, -042.8278361; ...

                  60.8114056, -042.8186167; ...

                  60.8152306, -042.8117389; ...

                  60.8203694, -042.8055667; ...

                  60.8256528, -042.8013611; ...

                  60.8315167, -042.7985083; ...

                  60.8374056, -042.797078; ...

                  60.8427194, -042.7969500];

Answer 1

[Chad Greene]

The loop you've written overwrites the results each time through the loop. Any information you want to log such as newcoord.latitude must be indexed to i. (Better yet, change i to k because i is the imaginary unit in Matlab and defining i as a variable can occasionally cause errors.)

Here are two ways you can organize your structure:

for k = 1:10 
   newcoord.lat{k} = randi(90,1,2); 
   anotherway(k).lat = randi(90,1,2); 
end

[Bob Murphy]

That's exactly what I was trying to do! If I wanted to save the results as a double like the provided coordinates were, is there a simple edit to do that?