Dear R members
I have a problem regarding storing the lists.
Let 
L=number of distinct values of any predictor (say L=5)
P=number of predictors (say P=20)

g1 <- c()
for(i in 1:P){
if(L > 1){
  for(j in 1:(L-1)){
g <- ....
g1[j] <- g
                       }
            }
g2[]=sort.list(g1)
                }

Now the question is: What should we use inside brackets of g2[....], whether "i" or some thing else? If L is not greater than 1 then there will be a "NULL" for g2. We don't want to store it in g2, so how can we handle this problem. Looking forward for some help. Thanks and 

 
best regards

Muhammad Azam 



      
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