[R] handle dates in R?

[Armstrong, Whit]

dts <- c("2004-8-1","2004-10-1","2001-9-1")
strptime(dts,"%Y-%m-%d")
julian(strptime(dts,"%Y-%m-%d")) 


> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of zhijie zhang
> Sent: Thursday, September 13, 2007 8:19 AM
> To: R-help at stat.math.ethz.ch
> Subject: [R] handle dates in R?
> 
> Dear Rusers,
>   I have some data in .csv file like "2004-8-1" and 
> "2004-10-1", and i  need to convert them into days from the 
> origin (January 1, 1960).
> I have tried the function date.mmddyyyy(), but cannot get it. 
> Anybody can show me how to handle the date data?
>   Thanks very much!
> 
> My dataset like:
> time
> 2004-8-1
> 2004-10-1
> 2001-9-1
> 2002-9-1
> 
> 
> --
> With Kind Regards,
> 
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> [*************************************************************
> **********]
> Zhi Jie,Zhang ,PHD
> Tel:86-21-54237149
> Dept. of Epidemiology,School of Public Health,Fudan 
> University Address:No. 138 Yi Xue Yuan Road,Shanghai,China
> Postcode:200032
> Email:epistat at gmail.com
> Website: www.statABC.com
> [*************************************************************
> **********]
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> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
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> PLEASE do read the posting guide 
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 




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