[R] How to translate string to variable inside a command in an easy way in R

UriB uriblass at gmail.com
Wed Jul 13 18:27:54 CEST 2011

Here is another question 

I want to have a function that get a string for example
y="AMI" and make commands like the following

agg<-aggregate(numAMI ~MemberID,right.a,sum)

Note that I know that numAMI is part of right.a because another function
with the string AMI already generated it.

Is there a way to do it without paste parse and eval?

I can do it by the following commands for y="AMI"

text2<-"~MemberID, right.a, sum)"

If you can have a shorter code for it then it can be productive.

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