Hi all,

 

If I want to write a for loop to loop through a set of factors, which
are not coded in 1,2,3, for e.g in character, possible to write the for
loop without changing  it to categorical variables?  I saw the manual
mentions for loop will take a list, but I'm not sure how to create a
list here.  Any input will be appreciated.  Thanks.

 

Yen Lin


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