Is there anyway to preset date formats? I have a date from a cover.dbf that is shown as this:> cover$FINALREPOR[1] "2003-06-24" The numeric value in cover$FINALREPOR is 12227. I'd rather not create another vector to hold the properly formatted date. When I put this in a WordPerfect merge, I want the date to be June 24, 2003. I could take care of the problem in a WordPerfect macro but I'd rather do it as an R default date format if possible. I researched some of this in the archives, FAQ's and manuals but didn't find anything that met my need. I would imagine that this type of question is probably an FAQ but I didn't find it. mailto:khobson at odot.org Kenneth Ray Hobson, P.E. Oklahoma DOT - QA & IAS Manager 200 N.E. 21st Street Oklahoma City, OK 73105-3204 (405) 522-4985, (405) 522-0552 fax Visit our website at: http://www.okladot.state.ok.us/materials/materials.htm
On 6/10/05, khobson at fd9ns01.okladot.state.ok.us <khobson at fd9ns01.okladot.state.ok.us> wrote:> > > > > Is there anyway to preset date formats? I have a date from a cover.dbf > that is shown as this: > > cover$FINALREPOR > [1] "2003-06-24" > > The numeric value in cover$FINALREPOR is 12227. I'd rather not create > another vector to hold the properly formatted date. > > When I put this in a WordPerfect merge, I want the date to be June 24, > 2003. I could take care of the problem in a WordPerfect macro but I'd > rather do it as an R default date format if possible. >I am not entirely sure I understand what you are asking but I assume you want a Date variable such that print, format and as.character, when applied to it, produce default output of a prespecified format. Although I do not think Date will do that, chron can associate a default format with a chron variable. library(chron) # custom format for a dates (i.e. chron) object my.format <- function(x) format(as.Date(dates(x)), "%B %d %Y") # test data my.Date <- Sys.Date() + 0:9 # convert to chron and associate my.format to it my.chron <- chron(unclass(my.Date), out.format = my.format) print(my.chron) my.chron as.character(my.chron) format(my.chron) Note that you can find more information on chron and various conversions in my article in RNews 4/1 and especially the table at the end of that article.
Is something like this what you want?
x <- as.Date("2003-06-24")
format(x, "%B %d %Y")
or perhaps
as.character(x, "%B %d %Y")
-roger
khobson at fd9ns01.okladot.state.ok.us wrote:>
>
>
> Is there anyway to preset date formats? I have a date from a cover.dbf
> that is shown as this:
>
>>cover$FINALREPOR
>
> [1] "2003-06-24"
>
> The numeric value in cover$FINALREPOR is 12227. I'd rather not create
> another vector to hold the properly formatted date.
>
> When I put this in a WordPerfect merge, I want the date to be June 24,
> 2003. I could take care of the problem in a WordPerfect macro but I'd
> rather do it as an R default date format if possible.
>
> I researched some of this in the archives, FAQ's and manuals but
didn't
> find anything that met my need. I would imagine that this type of question
> is probably an FAQ but I didn't find it.
>
> mailto:khobson at odot.org
> Kenneth Ray Hobson, P.E.
> Oklahoma DOT - QA & IAS Manager
> 200 N.E. 21st Street
> Oklahoma City, OK 73105-3204
> (405) 522-4985, (405) 522-0552 fax
>
> Visit our website at:
> http://www.okladot.state.ok.us/materials/materials.htm
>
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>
--
Roger D. Peng
http://www.biostat.jhsph.edu/~rpeng/