Converting a String to a Variable Name On-The-Fly and Vice-versa in R

December 28, 2010
By

(This article was first published on johnramey » r, and kindly contributed to R-bloggers)

Recently, I had a professor ask me how to take a string and convert it to an R variable name on-the-fly. One possible way is:

x <- 42
eval(parse(text = "x"))
[1] 42

Now, suppose we want to go the other way. The trick is just as simple:

x <- 42
deparse(substitute(x))
[1] "x"

To leave a comment for the author, please follow the link and comment on their blog: johnramey » r.

R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more...



If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook...

Tags:

Comments are closed.

Sponsors

Mango solutions



RStudio homepage



Zero Inflated Models and Generalized Linear Mixed Models with R

Quantide: statistical consulting and training

datasociety

http://www.eoda.de





ODSC

ODSC

CRC R books series





Six Sigma Online Training









Contact us if you wish to help support R-bloggers, and place your banner here.

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)