[R] How Can I Execute a String Expression?

Jeff Newmiller jdnewmil at dcn.davis.ca.us
Tue Jun 13 04:33:49 CEST 2017

R is not a very good macro language... I recommend against this strategy.

We could be more concrete in offering alternatives if you were a little more complete in your reproducible example [1][2][3]. What variations exactly were you thinking of? What kind of data are you working with? The way you read in the data can make a big difference in how effectively you analyze it. (Not asking for your actual data... just a fake version of it.)

[1] http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example

[2] http://adv-r.had.co.nz/Reproducibility.html

[3] https://cran.r-project.org/web/packages/reprex/index.html
Sent from my phone. Please excuse my brevity.

On June 12, 2017 6:55:40 PM PDT, Donald Macnaughton <donmac at matstat.com> wrote:
>I have the string ggstr that I've built with string manipulation:
>ggstr =  "ggplot(df1, aes(x,y)) + geom_smooth(se=FALSE, span=0.01)"
>Assuming df1 is properly defined, this string will execute properly if
>submit it manually without the quotes. How can execute the command as a
>string, so that I can run it repeatedly (with minor modifications) in a
>loop?  Presumably, it would be something like:
>Thanks for your help,
>Don Macnaughton
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>PLEASE do read the posting guide
>and provide commented, minimal, self-contained, reproducible code.

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