Convert a irregular time series to a regular time series

Question

I am having a problem when converting irregular time series to regular time series. Below a simplified example can be found:

require(zoo)
t <- as.characte         


        

Answer 1

It's not a bug. There are 1,461 days spanning the 4 years in your time series. And it doesn't work for me the first time I run it. as.Date(t,"%Y") doesn't know what month/day to use to make a date, so it uses today's month/day. That does not make for reproducible analysis. Try this instead:

t <- c(1981,1984,1985)
d <- c(1,3,6)
z <- zoo(d,t)
z <- merge(z,zoo(,c(1981,1982,1983,1984,1985)))
ts.d <- as.ts(z)

Which yields:

> ts.d
Time Series:
Start = 1981 
End = 1985 
Frequency = 1 
[1]  1 NA NA  3  6