Entering edit mode
Dear Sir/Madam
I have two questions.
1) I am currently trying to add a lot of values to an
environment. A simplistic example is:
names <- as.character(1:100000)
values <- data.frame(a=rep("a", 4), b=(rep("b", 4)))
environment <- new.env(parent=emptyenv())
for (i in 1:100000) {
assign(names[i], values, envir=environment)
}
I find that as I gets bigger this runs increasingly
slow. Is this caused by the increasing size of the
enviroment? Or by something else? And is there a way
for me to avoid this?
2) Assume that I have two different environments that
I would like to merge into one so all the values are
shared, how can I accomplish this? For example with:
e1 <- new.env(parent = emptyenv())
e2 <- new.env(parent = emptyenv())
assign("a", 3, envir=e1)
assign("b", 4, envir=e2)
how can I join e1 and e2 so I have for example e3
containing all the values. This seems to happen if I
have:
e1 <- e2 <- new.env(parent = emptyenv())
assign("a", 3, envir=e1)
assign("b", 4, envir=e2)
but is there a way to do it for enviroments that are
already existing.
Thanks you for any help you can give me. I am sorry if
my questions are very simple, but I am a bit confused
by the concept of environemnts and how to work with
them.
Yours truly.
Mrs Helen Zhou
