On Oct 12, 2011, at 1:20 AM, Erin Hodgess wrote:
Dear R People:
I have the following set of data
Block[1:5]
[1] "5600-5699" "6100-6199" "9700-9799" "9400-9499" "8300-8399"
and I want to split at the -
strsplit(Block[1:5],"-")
[[1]]
[1] "5600" "5699"
[[2]]
[1] "6100" "6199"
[[3]]
[1] "9700" "9799"
[[4]]
[1] "9400" "9499"
[[5]]
[1] "8300" "8399"
What is the best way to extract the pieces that are to the left of the
dash, please?
> sub("\\-.*$", "", c("5600-5699", "6100-6199", "9700-9799",
"9400-9499", "8300-8399") )
[1] "5600" "6100" "9700" "9400" "8300"
--
David Winsemius, MD
West Hartford, CT
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