CODEWITHSUNDEEP
r
jc52766
jc52766

Reputation: 61

Is there a way to change variable assignment names

Using R. Is there a way that I can give R any text string and it will treat it like a formula?

An example says it all.

a <- 1
b <- 2
c <- 3
d <- 4

What if I had to do this all the way up to z?

In R we can write:

letters[1]

This gives us an "a"

So what about something like this: (It doesn't work but I'd like to do something like this)

for (i in 1:4) {    
  letters[i] <- i
}

There's the as.formula function but that's only good for formulas like a ~ b + c.

Thanks.

Upvotes: 1

Views: 75

Answers (1)

agstudy
agstudy

Reputation: 121568

If you want to evaluate a text :

eval(parse(text="a<-1"))

But if you want to initialize many variables, you can create a named list and convert it to a separate variables (attach each components to the global environment) using list2env, but I would highly recommend that you keep your variables in the same list. 

 xx <- letters[1:5]
 list2env(setNames(seq_along(xx), xx), .GlobalEnv)

Upvotes: 2

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