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
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 fridays in current month to the
number of fridays in the prec
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