gsub("_.*","",myInput)
#[1] "afg3" "alg12" "dbp3" "elp4" "fob1" "gpr1"
A.K.
----- Original Message -----
From: CompBiol ATL <along...@gmail.com>
To: r-help@r-project.org
Cc: Hong Qin <qins...@gmail.com>
Sent: Monday, June 17, 2013 6:52 PM
Subject: [R] help with string split in R
#I want to remove '_alpha' in a vector of strings
myInput = c( "afg3_alpha", "alg12_alpha", "dbp3_alpha", "elp4_alpha",
"fob1_alpha", "gpr1_alpha")
#my current solution
tmpsplit = strsplit(myInput, '_')
tmp = NA
for (item in tmpsplit){
tmp = c(tmp, item[1])
}
results1 = tmp[-1];
#this is what I need, but I want a better solution.
#Here is what I come up with, but it is pretty awkward
tmp3 = lapply(myInput, FUN=function(x){strsplit(x, '_')[[1]][1]})
results2 = unlist(tmp3)
#Please help me revise the above loop. Thanks, -- Hong
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