results in
> >TRUE value
> >
> >Samaru56[sel,]
> >
> >selects these rows
> >
> >Regards
> >Petr
> >
> >> -Original Message-
> >> From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
> >> project.org] O
ounces@r-
>> project.org] On Behalf Of Frederic Ntirenganya
>> Sent: Wednesday, October 15, 2014 9:01 AM
>> To: r-help@r-project.org
>> Subject: [R] Sum of two consecutive number in dataset.
>>
>> Dear All,
>>
>> i am solving the following problem in my w
Break down your problem into parts:
# compute two-day totals. I use filter here, but there are many ways
twoDayTotal <- function (x, init = 0)
{
# init lets you supply rainfall from day previous to first in x
filter(c(init, x), c(1, 1))[-length(x)]
}
# compute the first time a logical vect
A couple of observations:
1) I'm not sure what the variable i is doing, looks like you are trying
to loop through years but perhaps you left that bit of code out for
clarity.
2) On the first loop of i you are assigning the values of
Samaru56[sow_day,] to all values in Samaru56. For future loops all
.org] On Behalf Of Frederic Ntirenganya
> Sent: Wednesday, October 15, 2014 9:01 AM
> To: r-help@r-project.org
> Subject: [R] Sum of two consecutive number in dataset.
>
> Dear All,
>
> i am solving the following problem in my work.
>
> The first day from April 01 th
om: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
> project.org] On Behalf Of Frederic Ntirenganya
> Sent: Wednesday, October 15, 2014 9:01 AM
> To: r-help@r-project.org
> Subject: [R] Sum of two consecutive number in dataset.
>
> Dear All,
>
> i am solving the foll
Dear All,
i am solving the following problem in my work.
The first day from April 01 that gets more than 20 mm on a single day, or
totalled
over 2 consecutive days. i.e April 01 = 92th day of the year.
The column of interest is "Rain".
> head(Samaru56)
Year Day Rain
1 1928 10
2 1928 2
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