[R] Days of the week?

[Dirk Eddelbuettel]

On 24 January 2007 at 17:39, John McHenry wrote:
| What is the "standard" way to get the day of the week from a date such 
| as as.Date("2006-12-01")? It looks like fCalendar has some functions
| but this requires a change in the R locale to GMT. Is there another way?

Yes, go to POSIXlt and extract the wday field (see ?POSIXlt for more):


> as.POSIXlt(as.Date("2006-12-01"))$wday
[1] 5
> as.POSIXlt(as.Date("2006-12-01")+0:6)$wday
[1] 5 6 0 1 2 3 4
>                          

Dirk

-- 
Hell, there are no rules here - we're trying to accomplish something. 
                                                  -- Thomas A. Edison