[ Help ] Basic MATLAB " For statement "

Hello Guys

Can you please tell me whether this Matlab code whether correct or not??

this code use to calculate all distances from A to J points on the map ( has longitude and latitude ), the starting point coordinates ( Lat and Long ) is 3.682043 and 101.523710 and the destination is 2.227804 103.35091

for p1=3.682043:-0.5:2.227804
for p2=101.523710:0.5:103.735091

a5= 2.227804;
b5=103.35091;

[dDgree] = distance(p1,p2,a5,b5); %%this function used to find a distance between two coordinates

end
end

Answer 1

[Walter Roberson]

No, that code would calculate the distances over a grid of points, not over a list of points with specific locations. Also, that code will throw away the distances after it calculates them.

Suppose you have a vector of length 10 for latitudes, and another for longitudes. lats(1) corresponds to A's latitude, lats(2) for B's lat, longs(1) for A's long, and so on. Then

a5= 2.227804;
b5=103.35091;

for K = 1 : length(lats)
  thislat = lats(K);
  thislong = longs(K);
  dDgree(K) = distance(thislat, thislong, a5, b5);
end

[sese]

Thanks Walter Roberson: please brother i am new in Matlab, i am 16 Years old, can you please explain to me more? could you please demonstrate with details? Tq

[Walter Roberson]

http://www.mathworks.com/help/techdoc/ref/length.html

http://www.mathworks.com/help/techdoc/ref/for.html

http://www.mathworks.com/help/techdoc/learn_matlab/bs7uynb-1.html