Dear useRs,
For an interactive use, I am trying to write a function that looks for
all data.frames and lists in the environment and ask the user to select
one of them. I then run some operations on this object.
This is what I am trying:
foo <- function(){
df.list <- ls()[sapply(ls(), function(x) class(get(x))) %in%
c("data.frame","list")]
dat.str <- select.list(choices=df.list, title="Select object")
dat <- get(dat.str)
str(dat)
}
Let's say I have these three objects:
vec <- 1:10
mylist <- list(1:3)
datf <- data.frame(var1=rnorm(10), var2=rnorm(10))
I would like the function to show me only mylist and datf in the dialog
box. Everything works fine if I take the code out of the function, but
when I run foo() I get this error:
"Error in get(dat.str) : first argument incorrect"
Is there a problem with using get() within a function? Maybe a problem
with environments?
Thank you in advance for any help!
Ivan
--
Ivan Calandra, PhD
Scientific Mediator
University of Reims Champagne-Ardenne
GEGENAA - EA 3795
CREA - 2 esplanade Roland Garros
51100 Reims, France
+33(0)3 26 77 36 89
ivan.calan...@univ-reims.fr
--
https://www.researchgate.net/profile/Ivan_Calandra
https://publons.com/author/705639/
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