Hi,
It would have been nice to see what you've tried.
Here is what I got (maybe not the easiest, but looks like it works)
a1 <- 1
a2 <- 2
obs <- objects(pattern=glob2rx("a?"))
sum(unlist(mget(obs, envir=.GlobalEnv)))
[1] 3
It also works with vectors:
a1 <- 1:10
a2 <- 11:20
sum(unlist(mget(obs, envir=.GlobalEnv)))
[1] 210
Is it what you're looking for?
HTH,
Ivan
Le 11/16/2010 16:34, Kevin Ummel a écrit :
A bit embarrassed to post this seemingly trivial question, but I can't find
anything in the archive that's quite relevant:
a1=1
a2=2
obs=objects(pattern=glob2rx("a?"))
I want to utilize 'obs' as a function argument to produce something like:
sum(a1,a2)
Obviously, sum(obs) doesn't work, but I've tried variations of 'eval', 'parse',
'mget', and 'noquote' without success. What am I missing?
Thanks,
Kevin
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