5 messages · Matthew Keller, Tal Galili, Henrik Bengtsson +1 more
Hi all, Probably a rudimentary question. I have a flat file that looks like this (the real one has ~10e6 elements): 10110100101001011101011 and I want to pull that into R as a vector, but with each digit being it's own element. There are no separators between the digits. How can I accomplish this? Thanks in advance! Matt
Matthew C Keller Asst. Professor of Psychology University of Colorado at Boulder www.matthewckeller.com
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Hi all, Quickly received an answer off the list. To do this is easy. Pull it in using e.g., scan(). Then use strsplit: z <- '10001011010010' strsplit(z,'')
Hi all, Probably a rudimentary question. I have a flat file that looks like this (the real one has ~10e6 elements): 10110100101001011101011 and I want to pull that into R as a vector, but with each digit being it's own element. There are no separators between the digits. How can I accomplish this? Thanks in advance! Matt -- Matthew C Keller Asst. Professor of Psychology University of Colorado at Boulder www.matthewckeller.com
Matthew C Keller Asst. Professor of Psychology University of Colorado at Boulder www.matthewckeller.com
See readBin(), e.g. r <- readBin(pathname, what="raw", n=10e6); str(r); # raw [1:21] 30 31 30 31 ... c <- rawToChar(x, multiple=TRUE); str(c); # chr [1:21] "0" "1" "0" "1" "0" "0" "1" "0" "1" "0" ... i <- as.integer(r); str(i); # int [1:21] 48 49 48 49 48 48 49 48 49 48 ... /Henrik
Hi all, Probably a rudimentary question. I have a flat file that looks like this (the real one has ~10e6 elements): 10110100101001011101011 and I want to pull that into R as a vector, but with each digit being it's own element. There are no separators between the digits. How can I accomplish this? Thanks in advance! Matt -- Matthew C Keller Asst. Professor of Psychology University of Colorado at Boulder www.matthewckeller.com
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Hi all, Probably a rudimentary question. I have a flat file that looks like this (the real one has ~10e6 elements): 10110100101001011101011 and I want to pull that into R as a vector, but with each digit being it's own element. There are no separators between the digits. How can I accomplish this? Thanks in advance!
Is it broken up into lines at all? Then read.fwf might be what you
want. If it's just a huge collection of 0s and 1s with no line breaks,
then use readChar(filename, nchar=1) to read the individual characters,
and later convert them to digits using ifelse(), e.g.
chars <- readChar(filename, nchar=1)
digits <- ifelse(chars=="1", 1, ifelse(chars == "0", 0, NA))
if (any(is.na(digits))) stop("not all 0s and 1s!")
Duncan Murdoch