[R] Data formart

[Frederic Ntirenganya]

Hi Amos,

This approach gives a column of NA.

On Wed, Oct 8, 2014 at 10:20 PM, Amos B. Elberg <amos.elberg at gmail.com>
wrote:

> You can adapt:   format(as.Date(paste(Year, sep = "-", ifelse(Year %% 4 ==
> 0, Start, ifelse(Start > 59, Start - 1, Start))), "%Y-%j"), "%b %d”)
>
> But 60% of the dates in your data.frame will then be wrong.
>
>
> From: Frederic Ntirenganya <ntfredo at gmail.com> <ntfredo at gmail.com>
> Reply: Frederic Ntirenganya <ntfredo at gmail.com>> <ntfredo at gmail.com>
> Date: October 8, 2014 at 9:38:34 AM
> To: r-help at r-project.org <r-help at r-project.org>> <r-help at r-project.org>
> Subject:  [R] Data formart
>
> Dear All,
>
> Change the format of the start and end columns so that data appear as the
> day of the year. For instance: Apr 24 rather than 115.
>
> The idea is that I want the non=leap years to be 366 days instead of being
> 365 days. ie. Each year must have 366 days. for example: in the column
> Start2, Apr 18 will be Apr 17.
>
> > head(Samaru)
> Year Start End Length Start2 End2
> 1 1930 108 288 180 Apr 18 Oct 15
> 2 1931 118 288 170 Apr 28 Oct 15
> 3 1932 115 295 180 Apr 24 Oct 21
> 4 1933 156 294 138 Jun 05 Oct 21
> 5 1934 116 291 175 Apr 26 Oct 18
> 6 1935 134 288 154 May 14 Oct 15
>
> Any idea is welcome. Thamks!!!!
> --
> Frederic Ntirenganya
> Maseno University,
> Kenya.
> Mobile:(+254)718492836
> Email: fredo at aims.ac.za
> https://sites.google.com/a/aims.ac.za/fredo/
>
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>
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>


-- 
Frederic Ntirenganya
Maseno University,
Kenya.
Mobile:(+254)718492836
Email: fredo at aims.ac.za
https://sites.google.com/a/aims.ac.za/fredo/

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