How do I preallocate this variable so that I can remove my warning and test whether my while loops are infinite or whether my code is just computing really slowly?

I only have these variables left to "fix" and then my code will be "green", free from any errors or any warnings, but I do not know how to preallocate this variable, which I'm getting a warning of "The variable result appears to change for every loop iteration" for:

 result(i+1,1)=phi;
 result(i+1,2)=T_AF;

Currently, my code execution is just taking forever to finish and I'm not sure if it's my while loops or if it's not pre allocating the aforementioned variables,

My for loop is:

 for i = 0:1:15

Thank you for your help!

Answer 1

[Stephen23]

result = nan(16,2); % preallocate
for ... 

[Syed Awais]

Thank you so much for the quick reply!

Yeah something's wrong with my code, this hasn't made a difference :( Still taking infinitely long

[Ameer Hamza]

@Syed, preallocation of just 32 elements isn't such a significant speed issue. The likely cause is your algorithm.