try this:
input <- readLines("yourfile.txt")
# determine start
start <- grep("\tBegin Main\t", input)[1] # first line if many
if (length(start) == 1 && (start > 1)){
input <- tail(input, -(start - 1)) # delete heading lines
}
# find lines you want to delete
breaks <- grep("\tBreak\t", input)
if (length(breaks) > 0){
input <- input[-breaks]
}
# now read in your data
real_input <- read.table(textConnection(input), header=TRUE)
closeAllConnections()
On Mon, May 31, 2010 at 7:51 PM, Kevin Burnham <kburn...@gmail.com> wrote:
> I am trying to import a series of text files generated by stimulus
> presentation software. The problem that I am having is that the number of
> rows I need to skip is not fixed (depending on subject's pretest behavior)
> nor is the first row of the data I want always the same (the stimuli were
> presented in random order). So I need to bring in the .txt file (using
> readLines?), look for the row containing the text "Begin Main" (see exact
> row below) and start reading data to a table from that point.
>
> [13] "Main Group\t1000\tBegin Main\tBegin Main\tBegin Main\t\t
> \tPressed\t(any response)\tC\t25860\t\t\t\t\t"
>
> I would also like it to ignore the row:
> [173] "Main Group\t1000\tBreak\tBreak\
> tpause3\t\t \tPressed\t(any response)\tC\t47610\t\t\t\t\t"
>
> which will always be the same number of rows after the "Begin Main" row.
>
> Thanks,
> Kevin Burnham
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
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