R help - Dec 2013 - How to access data frame column name using variable ??

Hi,
Try:
comb[,as.numeric(temp[1])]
#[1] "V1" "V2"
?comb[,as.numeric(temp[3])]
#[1] "V1" "V3"



A.K.


i have two data frame 
>comb 
? ? ? ? ?[,1] ? [,2] ? ?[,3] ? [,4] ? [,5] ? ?[,6] 
[1,] ? ?"V1" ? "V1" ? "V1" ? "V1" ?
"V1" ? "V1"
[2,] ? ?"V2" ? "V2" ? "V2" ? "V3" ?
"V3" ? "V4"

>table 
? ? V1 ? ? ? ? ? V2 
1 V1V2 ? ? ? ? ?3 
2 V1V3 ? ? ? ? ?3 
5 V2V3 ? ? ? ? ?3 


i select row name by function 
rownames(table) and stored it in a data frame 

temp<-data.frame() 
temp<-rowname(table) 

i want to selcect column of other data frame using this reference. 

comb[,temp[1]]..but its not working.. 

because temp[1] is "1" 
comb[,"1"] 
is not vaild. 

who to over come this??