how to make a loop ??

i have a regression model with 3 variables x1 x2 x3 and all possible regression models are 2^3=8 x1 , x2,x3 x1x2, x1x3,x2x3 ,no variablesand x1x2x3 i want to apply a method called AIC to choose the correct model , SO I wan to make a loop to apply aic on all subset models ANY Help

Answer 1

[James Tursa]

You could use something like this for your outer loop of making variable selections:

patterns = dec2bin(0:7);
  for k=1:8
      usevariable = patterns(k,:)-'0';
      % usevariable (1), usevariable (2), usevariable (3) are either 0 or 1
      % you can then pick to use x1, x2, x3 depending on associated value of usevariable 
      % the pattern will cover all posibilities in the loop
  end

Answer 2

[alireza bakhshaee]

Hi all I have 28 text files. each text file has 11 columns. I have to skip first 3 lines of each text file then read them. 1-How can I find the maximum number of each column in each text files? 2-how can I find the most maximum number of the previous question in 28 files?

[James Tursa]

Please delete this Answer and instead open up a new question.