[R] Convert to as.Date

Rowe, Brian Lee Yung (Portfolio Analytics) B_Rowe at ml.com
Thu Jan 8 20:38:05 CET 2009


You can use zoo to do this:

library(zoo)
DA <- c("1991q1", "1993q2")
as.Date(as.yearqtr(DA))

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Shruthi Jayaram
Sent: Thursday, January 08, 2009 1:46 PM
To: r-help at r-project.org
Subject: [R] Convert to as.Date



Hi,

I have an vector object that looks like 

DA <- c("1991q1", "1993q2") 

(first quarter of 1991 etc) and I want to convert it into a date object
using as.Date(). I did this for montly data but am stumped when it comes
to
dealing with quarterly data and as.Date. 

Would anyone be able to help? Would be very grateful for any advice,
sorry
for being such an R-newbie!

Shruthi
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