Hi,
Note that if your list of 200k data frames is the result of splitting
a big data frame, then trying to rbind the result of the split is
equivalent to reordering the orginal big data frame. More precisely,
do.call(rbind, unname(split(df, f)))
is equivalent to
df[order(f), , drop=FALSE]
(except for the rownames), but the latter is *much* faster!
Cheers,
H.
On 06/27/2016 08:51 AM, Witold E Wolski wrote:
I have a list (variable name data.list) with approx 200k data.frames
with dim(data.frame) approx 100x3.
a call
data <-do.call("rbind", data.list)
does not complete - run time is prohibitive (I killed the rsession
after 5 minutes).
I would think that merging data.frame's is a common operation. Is
there a better function (more performant) that I could use?
Thank you.
Witold
--
Hervé Pagès
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N, M1-B514
P.O. Box 19024
Seattle, WA 98109-1024
E-mail: hpa...@fredhutch.org
Phone: (206) 667-5791
Fax: (206) 667-1319
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