I have a list of variables of a variable length (e.g., Var1, Var2, Var3,
... Vark). What I want to do is somehow feed that information into the
paste function, like:
paste(Var1, Var2, Var3...)
The problem is that I don't want to hard-code it because it's wrapped
within a function. Is there a way to supply a string? e.g.,
k = 2
VarNames = paste0("Var", 1:k)
paste(someFunction(VarNames), collapse="")
Suppose Var1 = A, B, C and Var2 = 1, 2. The result should return A1, A2,
B1, B2, C1, C2.
I've tried using eval, and get, but with no luck. Thanks in advance!
Dustin
[[alternative HTML version deleted]]
?do.call Bert Sent from my iPhone -- please excuse typos.> On Feb 11, 2014, at 12:15 PM, Dustin Fife <fife.dustin at gmail.com> wrote: > > I have a list of variables of a variable length (e.g., Var1, Var2, Var3, > ... Vark). What I want to do is somehow feed that information into the > paste function, like: > > paste(Var1, Var2, Var3...) > > The problem is that I don't want to hard-code it because it's wrapped > within a function. Is there a way to supply a string? e.g., > > k = 2 > VarNames = paste0("Var", 1:k) > paste(someFunction(VarNames), collapse="") > > Suppose Var1 = A, B, C and Var2 = 1, 2. The result should return A1, A2, > B1, B2, C1, C2. > > I've tried using eval, and get, but with no luck. Thanks in advance! > > Dustin > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.
Hi,
May be this helps:
Var1 <- LETTERS[1:3]
?Var2 <- 1:2
?do.call(paste0,expand.grid(lapply(VarNames,get)))
#[1] "A1" "B1" "C1" "A2" "B2"
"C2"
A.K.
On Tuesday, February 11, 2014 3:18 PM, Dustin Fife <fife.dustin at
gmail.com> wrote:
I have a list of variables of a variable length (e.g., Var1, Var2, Var3,
... Vark). What I want to do is somehow feed that information into the
paste function, like:
paste(Var1, Var2, Var3...)
The problem is that I don't want to hard-code it because it's wrapped
within a function. Is there a way to supply a string? e.g.,
k = 2
VarNames = paste0("Var", 1:k)
paste(someFunction(VarNames), collapse="")
Suppose Var1 = A, B, C and Var2 = 1, 2. The result should return A1, A2,
B1, B2, C1, C2.
I've tried using eval, and get, but with no luck. Thanks in advance!
Dustin
??? [[alternative HTML version deleted]]
______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.