Re: [R] bi-monthly time series

2014-02-20 Thread David Winsemius
On Feb 20, 2014, at 12:03 PM, Michael Friendly wrote: > > The vector, vec, below represents a time series of the number of some events > recorded > for 208 two-week intervals from 2005/01/01 up to the end of 2012. I want to > represent this together with the date information. I tried ts(), bu

Re: [R] bi-monthly time series

2014-02-20 Thread Duncan Mackay
Hi Michael What about using zoo you can convert to ts if required library(zoo) tv <- seq(as.Date('2005/01/01'),as.Date('2013/01/01'),by=14) zt <- zoo(vec,tv) head(zt) 2005-01-01 2005-01-15 2005-01-29 2005-02-12 2005-02-26 2005-03-12 1 0 0 0 1

Re: [R] bi-monthly time series

2014-02-20 Thread David Carlson
If the data are two week intervals, the frequency is 52/2 = 26 and that matches the amount of data 8*26=208: > vec.ts <- ts(vec, start=c(2005, 1), frequency=26) > str(vec.ts) Time-Series [1:208] from 2005 to 2013: 1 0 0 0 1 1 1 0 2 0 ... > print(vec.ts, calendar=TRUE) p1 p2 p3 p4 p5 p6 p7 p8