"index out of bounds" error

Why am I getting Index out of bound error with below mentioned code?

S = size(coordinates,1);

n = 0;

while(n<S)

o = 1;

while(o<10)

   D = rand(3,1);

   n = n+1;

   X(n)= coordinates(n);

   n = n+1;

   Y(n)= coordinates(n);

   n = n+1;

   Z(n)= coordinates(n);

 end  
     patch(X,Y,Z,D);
     hold on;

 end

Answer 1

[Tasneem]

It is my understanding that your code has two while loops. The inner while loop seems to be an infinite loop since you are not incrementing o anywhere in the code and you are also incrementing the value of n in the inner while loop which eventually exceeds the index range of coordinates and gives you the 'index out of bound' error.