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MathGroup Archive 2003

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Re: Unformatted File IO

  • To: mathgroup at smc.vnet.net
  • Subject: [mg44440] Re: [mg44432] Unformatted File IO
  • From: Yasvir tesiram <yat at omrf.ouhsc.edu>
  • Date: Sun, 9 Nov 2003 06:01:27 -0500 (EST)
  • References: <200311080951.EAA24713@smc.vnet.net>
  • Reply-to: yat at omrf.ouhsc.edu
  • Sender: owner-wri-mathgroup at wolfram.com

G'day,

The contents of test.txt are as you state below.
SetDirectory["pathTotest"];
/*check to see that the file is there*/
FileNames[]

(*open a file handle to the file (handle), read in the contents line by 
line (RecordSeparator) as words separated by any of the possible 
separators (WordSeparators) *)

(*note the "\"" in the list of WordSeprators is intentional because of 
your double quoted strings*)

handle = OpenRead["test.txt"];
z = ToExpression[
     ReadList[handle, Word, RecordSeparators -> {"\n"},
       WordSeparators -> {" ", "\t", "\""}, RecordLists -> True]
     ]
Close[handle];


Yas




Bruce W. Colletti wrote:
> I have an unformatted text file whose records hold reals and double-quoted 
> strings, all delimited by spaces, e.g.,
> 
>     "hello there"  2.7
>     1 2 3 4
>     9    "abc"      "def"
> 
> How can I read the file to produce a list of lists, e.g., {{hello there, 2.7},
> {1,2,3,4}, {9, abc, def}}?
> 
> Thanks.
> 
> Bruce
> 


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