Random matrix number generator

I am trying to make a matrix that generates random numbers but each column is associated with a different variable. To be specific I need a 60x6 matrix that has columns for; force, pressure, torque, thickness and radius with the last column being the cost function for the genetic algorithm. I also dont know how to define the cost function.

m=zeros(60,6);

F=m(1);

P=m(2);

T=m(3);

r=m(4);

t=m(5);

F=1000+rand(60,1)*99000;

P=100+rand(60,1)*900;

T=10+rand(60,1)*90;

r=.05+rand(60,1)*.04;

t=.0001+rand(60,1)*.0008;

Answer 1

[Walter Roberson]

There is no way in MATLAB to create a variable that "aliases" a column of a matrix. You will need to construct the variables with rand and then

m = [F P T r t] ;

[vincent stevenson]

That is exactly what i was missing, thank you. Another thing I'm wondering is how to put my cost function in. ? = ((?−2??^2)/2??^2))^2. Do I just change those into characters that I can use like a,b,c?

[Walter Roberson]

Odd, I am having difficulty figuring out what character encoding is being used for your string ? = ((?−2??^2)/2??^2))^2

[Walter Roberson]

   function cost = obj(x)
      theta = x(1); sigma = x(2); s = x(3);
      cost = pi_(theta, sigma, s);

   function result = pi_(theta, sigma, s)
      result = (theta./(2*sigma.*s.^2) - 1).^2;

It is not clear what this function of 3 variables has to do with the five variables force, pressure, torque, thickness and radius.

[Walter Roberson]

Ah, finally found the character encodings for those characters. They are part of the Mathematical Alphanumeric Symbols block that starts from U+1D400