Roberto Lodeiro Muller
wrote:
>
> -Original Message-
> From: Roberto Lodeiro Muller
> To: roberto.mul...@doctor.com
> Sent: Mon, Mar 21, 2011 3:37 pm
> Subject: Re: [R] Computing row differences in new columns
>
>
> Sorry, my data appeared badly formatted to me,
On Mar 21, 2011, at 3:38 PM, Roberto Lodeiro Muller wrote:
-Original Message-
From: Roberto Lodeiro Muller
To: roberto.mul...@doctor.com
Sent: Mon, Mar 21, 2011 3:37 pm
Subject: Re: [R] Computing row differences in new columns
Sorry, my data appeared badly formatted to me, so I
iginal Message-
> From: Roberto Lodeiro Muller
> To: roberto.mul...@doctor.com
> Sent: Mon, Mar 21, 2011 3:37 pm
> Subject: Re: [R] Computing row differences in new columns
>
>
> Sorry, my data appeared badly formatted to me, so I converted it to plain
> text:
>
> An
tenumber[i+1]
}
where datenumber is your integer column of the date.
-- Alex
Am 21.03.2011 20:38, schrieb Roberto Lodeiro Muller:
-Original Message-
From: Roberto Lodeiro Muller
To: roberto.mul...@doctor.com
Sent: Mon, Mar 21, 2011 3:37 pm
Subject: Re: [R] Computing row differences in
-Original Message-
From: Roberto Lodeiro Muller
To: roberto.mul...@doctor.com
Sent: Mon, Mar 21, 2011 3:37 pm
Subject: Re: [R] Computing row differences in new columns
Sorry, my data appeared badly formatted to me, so I converted it to plain text:
And just to clarify, for each
Hi
I have the following columns with dates and results, sorted by subject and
date. I'd like to compute the differences in dates and results for each
patient, based on the previous row. Obviously the last entry for each subject
should be a NA.
Which would be the best way to accomplished tha
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