r - elegant way to use rbind() on multiple dataframes with similar names? -
currently, have multiple dataframes same name , in running order (foo1
, foo2
, foo3
, foo4
, foo5
... etc). trying create large dataframe containing rows of above dataframes rbind()
. there elegant way equivalent of rbind(foo1, foo2, foo3, foo4, foo5...)
?
i have tried do.call(rbind, paste0("foo",i))
i=c(1,2,3...)
no avail.
there solution mentioned here, is: do.matrix <- do.call(rbind, lapply( paste0("variable", 1:10) , get) )
however, answer mysteriously says "that wrong way handle related items. better use list or dataframe, find out why in due course."
why wrong way this, , "right" way?
thanks.
always try rigorously capture relations between related instances of data, or related data , methods, or related methods. helps ease aggregate manipulation such rbind
requirement.
for case, should have defined related data.frames single list beginning:
foo <- list(data.frame(...), data.frame(...), ... );
and requirement satisfied thusly:
do.call(rbind, foo );
if it's late that, solution involving repeated calls get()
, described in article linked, can job.
Comments
Post a Comment