[R] Seeing Global Workspace and dealing with attach and detach

Ben Bolker bbolker at gmail.com
Wed Feb 20 01:49:48 CET 2013

Jeff Newmiller <jdnewmil <at> dcn.davis.ca.us> writes:

> In general, creating variables while attached leads to problems such
> as you describe. Normally the recommendation is to avoid the use of
> attach and detach entirely in favor of explicit reference to the
> data frame using [[]], [,], $, and the data= argument supported by
> many functions.

And with() and within() [as well as transform(), mutate(), subset(), etc.:
see http://r4stats.com/2013/01/22/comparing-tranformation-styles/
[sic "tranformation"]

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