[R] Error in extracting monthly observation from a daily time series data

Hi all, Suppose I have following dataset : library(zoo) SD = 1 date1 = seq(as.Date(01/01/90, format = %m/%d/%y), as.Date(12/31/08, format = %m/%d/%y), by = 1) len1 = length(date1); data1 = zoo(matrix(rnorm(len1, mean=0, sd=SD*0.5), nrow = len1), date1) Now I want to extract

Re: [R] Error in extracting monthly observation from a daily time series data

names(obs) shows the result has been sorted so use %Y instead of %y in the format statement in the split so that 2000 1999; otherwise, 99 00. On Mon, Mar 10, 2008 at 4:10 AM, Megh Dal [EMAIL PROTECTED] wrote: Hi all, Suppose I have following dataset : library(zoo) SD = 1 date1 =