push to list in R

Question

OK, this really basic. How do I add an element to a (named) list in R?

EDIT when the key name is a varibale

for (name in names(list$filenames)) {
  filename <- list$filenames[[name]]
  x <- read.table(filename)
  ret$name <- x # I want name to be interpreted here, not use "name"
}

possible duplicate of [R: How to add variable key/value pair to list object?](http://stackoverflow.com/questions/1105659/r-how-to-add-variable-key-value-pair-to-list-object) — hadley, Aug 08 '10 at 14:01

score 2 · Accepted Answer · edited Mar 16 '13 at 16:28

2

Perhaps ret<-lapply(list$filenames,read.table) will be better?

edited Mar 16 '13 at 16:28

answered Aug 08 '10 at 10:52

Gregory Demin

4,596
2
20
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1

maybe in this case it will, but I would happy to know hot to generally do it. – David B Aug 08 '10 at 10:57

score 0 · Answer 2 · answered Jun 14 '14 at 18:39

0

Re:

ret$name <- x # I want name to be interpreted here, not use "name"

That's the same thing as this:

ret[["name"]]

Do this instead:

ret[name]

Or if you want a simple vector back rather than something as the same type as ret, do this:

ret[[name]]

answered Jun 14 '14 at 18:39

user3740976

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1

push to list in R

2 Answers2