[R] date

arun smartpink111 at yahoo.com
Sat Aug 25 14:57:30 CEST 2012


HI,
Try this:

dat1<-"01/04/2006 1:10:60 PM"
 dat1<-as.character(dat1)
 strptime(dat1,"%m/%d/%Y %I:%M:%S %p")$yday+1
#[1] 4
A.K.


----- Original Message -----
From: Veerappa Chetty <chettyvk at gmail.com>
To: r-help at r-project.org
Cc: 
Sent: Friday, August 24, 2012 11:30 PM
Subject: [R] date

Hi,
I have dates as follows:
1/4/2006 0:00:00 AM
It is a factor  at present.
How do I find out the day of the week from this? How do I convert to Julian
date format?
Thanks.
Chetty

-- 
Professor of Family Medicine
Boston University
Tel: 617-414-6221, Fax:617-414-3345
emails: chettyvk at gmail.com,vchetty at bu.edu

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