ou very much!
> > Schragi
> >
> > -Original Message-
> > From: Gabor Grothendieck [mailto:ggrothendi...@gmail.com]
> > Sent: Wednesday, March 25, 2009 3:44 PM
> > To: Schragi Schwartz
> > Cc: r-help@r-project.org
> > Subject: Re: [R] Merging rows
way to do this?
>
> Thank you very much!
> Schragi
>
> -Original Message-
> From: Gabor Grothendieck [mailto:ggrothendi...@gmail.com]
> Sent: Wednesday, March 25, 2009 3:44 PM
> To: Schragi Schwartz
> Cc: r-help@r-project.org
> Subject: Re: [R] Merging rows in d
tz
Cc: r-help@r-project.org
Subject: Re: [R] Merging rows in dataframes
I've added an example to FAQ 3 on the home page that
illustrates group_concat.
http://sqldf.googlecode.com
On Wed, Mar 25, 2009 at 9:06 AM, Gabor Grothendieck
wrote:
> In the Links box to the right on the sqldf home
e output in the form
>> "apple|banana|orange". Is there any way to do this?
>>
>> Thanks again,
>> Schragi
>>
>> -Original Message-
>> From: Gabor Grothendieck [mailto:ggrothendi...@gmail.com]
>> Sent: Tuesday, March 24, 2009 12:50 AM
>> To:
: Tuesday, March 24, 2009 12:50 AM
> To: Schraga Schwartz
> Cc: r-help@r-project.org
> Subject: Re: [R] Merging rows in dataframes
>
> Using sqldf you only need two statements, infile <- file(...) and
> DF <- sqldf("select min(a), max(b), mean(c), ... from infile group by
rothendieck [mailto:ggrothendi...@gmail.com]
Sent: Tuesday, March 24, 2009 12:50 AM
To: Schraga Schwartz
Cc: r-help@r-project.org
Subject: Re: [R] Merging rows in dataframes
Using sqldf you only need two statements, infile <- file(...) and
DF <- sqldf("select min(a), max(b), mean(c), ...
Using sqldf you only need two statements, infile <- file(...) and
DF <- sqldf("select min(a), max(b), mean(c), ... from infile group by id").
The file statement identifies the filename and the second reads it
into sqlite (without
going through R), summarizes it and then reads the summarized version
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