[R] Data formart

[Amos B. Elberg]

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>
Reply: Frederic Ntirenganya <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>>
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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