Hi Eric,
Check the help for class.timeDate
> ?class.timeDate
which shows the available output formats. One
of the formats is "%Q" (quarter of the year as a Roman numeral)
fooTimes <- timeSeq(from = timeDate("1/1/1997"),
to = timeDate("12/31/2000"),
by = "quarters",
format = "%Y%Q"
)
fooTimes
> fooTimes
[1] 1997I 1997II 1997III 1997IV 1998I 1998II 1998III 1998IV
[9] 1999I 1999II 1999III 1999IV 2000I 2000II 2000III 2000IV
> fooTimes <- timeSeq(from = timeDate("1/1/1997"),
+ to = timeDate("12/31/2000"),
+ by = "quarters",
+ format = "%Y:%Q"
+ )
> fooTimes
[1] 1997:I 1997:II 1997:III 1997:IV 1998:I 1998:II 1998:III
[8] 1998:IV 1999:I 1999:II 1999:III 1999:IV 2000:I 2000:II
[15] 2000:III 2000:IV
so it should be possible for you to display quarters
this way.
Hope this helps
Steven McKinney
Consulting Services
Insightful Corporation
smckinney@insightful.com <mailto:smckinney@insightful.com>
tel: (800) 569-0123 x349
tel: (206) 283-8802 x349
fax: (206) 283-8691
Insightful Corporation
1700 Westlake Avenue North, Suite 500
Seattle, Washington 98109-3044 USA
www.insightful.com
Formerly known as MathSoft, Insightful Corporation
provides analytical solutions leveraging S-PLUS,
StatServer, S-PLUS Analytic Server and consulting services.
> -----Original Message-----
> From: s-news-owner@lists.biostat.wustl.edu
> [mailto:s-news-owner@lists.biostat.wustl.edu]On Behalf Of Eric Zivot
> Sent: Wednesday, September 19, 2001 11:41 AM
> To: S-News
> Subject: [S] timeSeries question
>
>
> I am learning to use the new timeSeries objects in Splus 6
> for windows. I
> have some economic data that is measured quarterly (postwar
> quarterly real
> GDP) from 1947:I to 2000:I. From what I can gather from my
> reading of the
> manual there is no date format for timeDate objects that will display
> quarterly data in standard forms like
>
> 1947:I 1947:II ... 2000:I
> or
> 1947 Q1 1947 Q2 ... 2000 Q1
>
> Does anyone have suggestions? Thanks in advance. ez
>
> Eric Zivot
> Associate Professor
> Department of Economics
> Box 353330
> University of Washington
> (206) 543-6715
> http://faculty.washington.edu
> http://myprofile.cos.com/zivote47
>
> ---------------------------------------------------------------------
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