Re: [R] aggregating a zoo object (monthly data to quarterly data)

2014-10-06 Thread David Winsemius
On Oct 6, 2014, at 2:50 AM, jpm miao wrote: > I tried to convert a monthly dataset to quarterly by averaging > > dt_mz<-zoo(dt_m, dt_m$date_m) > dt_mz2q<-aggregate(dt_mz, as.yearqtr, FUN=mean) > > However, the resulting zoo object are just NAs Because you put those month values inside the core

[R] aggregating a zoo object (monthly data to quarterly data)

2014-10-06 Thread jpm miao
I tried to convert a monthly dataset to quarterly by averaging dt_mz<-zoo(dt_m, dt_m$date_m) dt_mz2q<-aggregate(dt_mz, as.yearqtr, FUN=mean) However, the resulting zoo object are just NAs How can I get a quarterly average dataset? Thanks! > dput(dt_mz) structure(c("Jan 1981", "Feb 1981", "Mar 1