Hello,
On Mar 12, 2011, at 8:32 AM, Maas James Dr (MED) wrote:
Question 1:
I have a long list of variable names such as
first <- c("one","two","three")
and what I want to do is create a list of lists ... where the names
of each of overall lists components are "one","two", and "three".
This is the same result as
second <- list(one=list(),two=list(),three=list())
Is there a way to exploit lapply to convert a list such as first to
a list of empty lists such as second?
The first question is relatively easy. Try...
first <- c("one","two","three")
second <- sapply(first, function(x) { vector(mode = "list") })
I am unable to help you with your second question.
Cheers,
Ben
Question 2:
In a parallel routine using foreach and doMPI have to put calcualted
values into a list of lists such as
list(one=one,
two=two,
three=three)
It uses the same (large) list of variable names as first in question
1. Is there a simpler way to accomplish this with a lapply statement?
I've tried several permutations but no luck! Thanks a bunch.
Jim
===============================
Dr. Jim Maas
University of East Anglia
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Ben Tupper
Bigelow Laboratory for Ocean Sciences
180 McKown Point Rd. P.O. Box 475
West Boothbay Harbor, Maine 04575-0475
http://www.bigelow.org/
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and provide commented, minimal, self-contained, reproducible code.
