[R] parsing a data file

[Peter Wolf]

Hello Tamas,
here is a starting point for your file parsing problem:

@
<<*>>=
x1<-scan("t",what="")
print(x1)
x2<-paste(x1,collapse=" ")
print(x2)
x3<-strsplit(x2, "RECORD")[[1]]
print(x3)

@
output-start
 [1] "BEGIN"   "RECORD"  "[first"  "record"  "data]"   "RECORD"  "[second"
 [8] "record"  "data]"   "RECORD"  "[third"  "record"  "data]"   "END"   

[1] "BEGIN RECORD [first record data] RECORD [second record data] RECORD 
[third record data] END"

[1] "BEGIN "                   " [first record data] "  
[3] " [second record data] "   " [third record data] END"
output-end

Peter Wolf

Tamas Papp wrote:

>Hi,
>
>I need to parse a data file (output of a measuring device) of the
>following format:
>
>BEGIN RECORD [first record data] RECORD [second
>record data] RECORD
>[third record data]
>END
>
>Line breaks can (and do ;-() occur anywhere.  White space behaves very
>much like TeX, eg it is not important whether there are one or more
>spaces or linebreaks as long as there is one of them.  It is a text
>file, not binary.
>
>I need to extract the record data I marked with []'s, eg a vector such
>as c("[first record data]", "[second]", ...) would be nice as a
>result.
>
>What functions should I use for this?
>
>Thanks,
>
>Tamas
>
>
>  
>