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# How to get index in a loop in R

yome
1#
yome Published in 2018-01-11 10:53:47Z
 I have a vector of character type which has all the list of names. So I'm looping through each name and peforming some actions. This loop is not based on the index/length (and I want to keep it this way). However, if I want to access the index value in the loop how do I get it. Ex: names <- c("name1", "name2") for(name in names){ #do something print(name) #here how would I get the index number? like 1, 2 etc? } 
Elin
2#
 You can do something like this, which is literally getting the i value. names <- c("name1", "name2") i<-0 for(name in names){ i<-i+1 print(i) }  Or change the loop to use a numeric index names <- c("name1", "name2") for(i in 1:length(names)){ print(i) }  Or use the which function. names <- c("name1", "name2") for(name in names){ print(which(name == names)) }