why is the code considering only one value when the variable is in an iteration loop

hi. i am trying to run a loop taking the variable value from x=500:50:5000. it is considering each number starting from 1 and for the final assign it is considering only 1 value

Answer 1

[Walter Roberson]

I recommend you rewrite your code, using something similar to

xvals = 500:50:5000;
numx = length(xvals);

for K = 1 : numx
  x = xvals(K);

    %lots of code here
  end

Inside the "lots of code here", continue to use "x" in places where the specific value of x makes a difference, but use "K" where you want just want to indicate a vector accessed at a location corresponding to which x you are using.

For example, when you are assigning to f1(x) you don't really want to be assigning to f1(3500), the 3500'th location in f1: you want to be assigning to f1(7), corresponding to the fact that 3500 is the 7th x value.

I suspect you could also build an Re table and index it inside a for loop instead of using all of those awkward "for Re4 = 9000" constructs. Accumulate all the f*() results for a given x value into a vector and sum() the vector for your final f(x) = fi(x) - (f1(x)+f2(x)+....], which would become something like

f(K) = fi(K) - sum(fvals);

[trilochan]

can you please tell me how to write the same code in genetic algorithm solver

[Walter Roberson]

Sorry, I am not familiar with coding for the genetic algorithm solver.