Facing problems in creating and indexing structured array

Hi everyone,

I am trying to create an structured arrays with fields 'num', 'x' and 'y'. 'num' is the iteration number, x and y are respectively the long and lat values I created before. I want the structure in a way so that when I will write

pts(1) % it will return the following
num: 1
  x: 2.1376 % first element of long
  y: 1.5334 % first value of lat
  
pts(2) =
num: 2
  x: 1.8376 % 2nd element of long
  y: 1.0044 % 2nd element of lat

However the code is not working. Can anybody please help me to solve this out? Thanks a lot. Following is my code.......

function main

n = 6; 
long_min = 1.;
lat_min  = 1.;
w = 2.;
h = 1.;
bound.xmin = long_min;
bound.xmax = long_min + w;

bound.ymin = lat_min;
bound.ymax = lat_min + h;

% generating the sample points 
long  = long_min + w * rand(1,n);
lat   = lat_min  + h * rand(1,n); 

%structure arrays
for i = 1:n
    pts(i) = struct('num', {'i'}, 'x', {'long(i)'}, 'y', {'lat(i)'});
end

end

Answer 1

[David Hill]

pts = struct('num',{},'x',{},'y',{});
for i=1:n
    pts(i).num=i;
    pts(i).x=long(i);
    pts(i).y=long(i);
end

[Preyanka Dey]

@David Hill.. It's working. Thanks a lot.