Re: [R] Data formart

2014-10-09 Thread Amos B. Elberg
The code changes a single row; that's why I said you'd have to adapt it to your application. > On Oct 9, 2014, at 3:10 AM, Frederic Ntirenganya wrote: > > Hi Amos, > > This approach gives a column of NA. > >> On Wed, Oct 8, 2014 at 10:20 PM, Amos B. Elberg >> wrote: >> You can adapt: f

Re: [R] Data formart

2014-10-09 Thread Frederic Ntirenganya
Hi Amos, This approach gives a column of NA. On Wed, Oct 8, 2014 at 10:20 PM, Amos B. Elberg 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 wil

Re: [R] Data formart

2014-10-08 Thread 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 Reply: Frederic Ntirenganya > Date: October 8, 2014 at 9:38:3

Re: [R] Data formart

2014-10-08 Thread Jeff Newmiller
This is like using the formula Area=3*r^2 for the area of a circle... you can figure out a way to do it but it is still wrong. Why not leave the data as day of year instead of misleading anyone who looks at it? --- Jeff Newmi