Thanks Jim :)
Regards
Abhinaba
On Fri, Oct 10, 2014 at 9:02 PM, jim holtman wrote:
> Here is one way of doing it:
>
>
> > require(lubridate)
> > now <- as.Date('2014-10-10') # some date
> > # get first of month
> > first_mon <- now - day(now) + 1
> > # create sequence of days in the month so y
In my Impression, there seems exsits a function (let just call weekday) which
can return a POSIXlt format date 's weekday. That means, weekday( 31-may-2014
) may return the right weekday maybe 5, so a clumsy method is start to judge
from 1-may-2014 to 31-may-2014 , you get a vector x, sum(w
On Fri, Oct 10, 2014 at 7:28 AM, Abhinaba Roy wrote:
> Hi R helpers,
>
> I want to write a function which will
>
> 1. Count the number of fridays in the current month ( to extract month from
> given date) and also the number of fridays in the preceeding month
>
> 2. Calculate the ratio of the numb
Here is one way of doing it:
> require(lubridate)
> now <- as.Date('2014-10-10') # some date
> # get first of month
> first_mon <- now - day(now) + 1
> # create sequence of days in the month so you can count Fridays
> x <- seq(first_mon, by = '1 day', length = days_in_month(first_mon))
> first_f
Or try this:
fridays <- function(the_day){
require(lubridate)
day(the_day) = 1
the_month = seq(the_day, the_day+months(1)-days(1),1)
sum(wday(the_month) == 6)
}
That returns the number of Fridays in the month of a Date object given as arg:
> fridays(as.Date("2012-01-01"))
[1] 4
>
On 10/10/2014 8:10 AM, Abhinaba Roy wrote:
Hi Duncan,
I have converted the string to a POSIXIt object using
> strptime('31-may-2014',format="%d-%b-%Y")
But could not figure out the way forward.
Could you please elaborate a bit?
Try this:
?POSIXlt
Duncan Murdoch
On Fri, Oct 10, 2014 at
Hi Duncan,
I have converted the string to a POSIXIt object using
> strptime('31-may-2014',format="%d-%b-%Y")
But could not figure out the way forward.
Could you please elaborate a bit?
On Fri, Oct 10, 2014 at 5:14 PM, Duncan Murdoch
wrote:
> On 10/10/2014, 7:28 AM, Abhinaba Roy wrote:
> > Hi
On 10/10/2014, 7:28 AM, Abhinaba Roy wrote:
> Hi R helpers,
>
> I want to write a function which will
>
> 1. Count the number of fridays in the current month ( to extract month from
> given date) and also the number of fridays in the preceeding month
>
> 2. Calculate the ratio of the number of f
8 matches
Mail list logo
