[R] Remove quotes from a string to use in a variable call
dadrivr at gmail.com
Tue Mar 20 17:10:32 CET 2012
I have a string that I want to use in a variable call. How can I remove the
quotes and/or the string properties of the string to use it in a variable
Here's an example:
fm2 <- lme(distance ~ age, data = Orthodont, random = ~ 1)
I want to update the above regression to include new predictors according to
what is in a string:
predictors <- "age + Sex"
update(fm2,fixed=distance ~ age + Sex) #this works
update(fm2,fixed=distance ~ noquote(predictors)) #this doesn't work
Any help would be greatly appreciated. Thanks!
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