Re: [R] Multiple comment.char under read.table

From: Gundala Viswanath <gundalav_at_gmail.com>
Date: Sat, 07 Jun 2008 19:10:34 +0900

Thanks Daniel. Appreciate your info.

On Fri, Jun 6, 2008 at 9:51 PM, Daniel Folkinshteyn <dfolkins_at_gmail.com> wrote:
> according to the helpfile, comment only takes one character, so you'll have
> to do some 'magic' :)
>
> i'd suggest to first run mydata through sed, and replace one of the comment
> chars with another, then run read.table with the one comment char that
> remains.
>
> sed -e 's/^\^/!/' mydata.txt > mydata2.txt
>
> alternatively, you could do read.table twice, once with ! and once with ^,
> and then pull out all the common rows from the two results.
>
> on 06/06/2008 03:47 AM Gundala Viswanath said the following:
>>
>> Hi all,
>>
>> Suppose I want to read a text file with read.table.
>> It containt lines to be skipped that begins with "!" and "^".
>>
>> Is there a way to include this two values in the read.table function?
>> I tried this but doesn't seem to work.
>>
>> dat <- read.table("mydata.txt", comment.char = c("!","^") , na.strings
>> = "null", sep = "\t");
>>
>> Please advice.
>>
>

-- 
Gundala Viswanath

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Received on Sat 07 Jun 2008 - 10:26:02 GMT

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