[R] Reading complicated data file

james.holtman@convergys.com james.holtman at convergys.com
Wed Sep 25 17:08:58 CEST 2002


You can read the file in as a character vector, 'grep' the ones you want
and then use 'textConnection'; e.g.,

> x.1 <- scan('/tempxx.txt', what='', sep='\n')    # read file with '\n' as
separator
Read 6 items
> x.1
[1] "0 TITLE Title"     " 0 XLEGEND Legend" "-1 LABEL x"
[4] "1 1 12"            "1 2 30"            "1 3 34"
> x.match <- x.1[grep("^1", x.1)]  # match on leading '1'
> x.match
[1] "1 1 12" "1 2 30" "1 3 34"
> x.data <- read.table(textConnection(x.match))    # use textConnection to
'read' in the data
> x.data
  V1 V2 V3
1  1  1 12
2  1  2 30
3  1  3 34


At 1:15 PM +0200 9/25/02, zlamal at ufi.fme.vutbr.cz wrote:
>Hi, I am new in R and I have problem with reading this data file
>
>0 TITLE Title
>  0 XLEGEND Legend
>-1 LABEL x
>1 1 12
>1 2 30
>1 3 34
>
>I want to read only lines starting with 1 (it indicates 1st plotting line)
>and create data set from second and third value on this row.
>
>Thank for advice
>Jakub Zlamal
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