On Dec 16, 2008, at 8:49 AM, Prof Brian Ripley wrote:
On Tue, 16 Dec 2008, David Winsemius wrote:
You cannot keep them as strings and still get the benefits of
working with date-class objects. You should read more documentation
regarding dates. The
You can: order() will work on the Date
On Tue, 16 Dec 2008, David Winsemius wrote:
You cannot keep them as strings and still get the benefits of working with
date-class objects. You should read more documentation regarding dates. The
You can: order() will work on the Date class and the ordering can be
applied to the original data.
2008/12/16 RON70
>
> Yes you are right. However using that code, format of date is altered. I
> need
> to main same format as the input data i.e. "10-02-2008" not "2008-10-02",
> still having date-class. Any better idea?
You may try this:
format(sort(a,decreasing=TRUE),"%m-%d-%Y")
>
>
>
> D
You cannot keep them as strings and still get the benefits of working
with date-class objects. You should read more documentation regarding
dates. The as.Date function turns strings into a form that is stored
internally as number of days since some reference date and what you
are seeing is
On Tue, 16 Dec 2008, RON70 wrote:
I have a date-like-vector like :
date_file
"10-02-2008" "10-03-2008" "10-06-2008" "10-07-2008" "10-09-2008"
"10-10-2008" "10-13-2008" "10-14-2008" "10-15-2008"
"10-16-2008" "10-17-2008" "10-20-2008" "10-21-2008" "10-22-2008"
"10-23-2008" "10-24-2008" "10-28-
Yes you are right. However using that code, format of date is altered. I need
to main same format as the input data i.e. "10-02-2008" not "2008-10-02",
still having date-class. Any better idea?
David Winsemius wrote:
>
> You might want to look at your date format more closely. Both the
> sepa
You might want to look at your date format more closely. Both the
separator and the year format specs fail to match your input.
> as.Date("10-02-2008", format = "%m/%d/%y")
[1] NA
> as.Date("10-02-2008", format = "%m-%d-%Y")
[1] "2008-10-02"
--
David Winsemius
On Dec 16, 2008, at 7:54 AM, RON7
I have a date-like-vector like :
> date_file
"10-02-2008" "10-03-2008" "10-06-2008" "10-07-2008" "10-09-2008"
"10-10-2008" "10-13-2008" "10-14-2008" "10-15-2008"
"10-16-2008" "10-17-2008" "10-20-2008" "10-21-2008" "10-22-2008"
"10-23-2008" "10-24-2008" "10-28-2008" "10-29-2008"
"10-30-2008" "1
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