On Wed, Mar 2, 2011 at 5:14 PM, rivercode <aqua...@gmail.com> wrote:
> Is there a easy way to create the time index for a zoo/xts object for every
> 100 milliseconds.
>
> eg. time Index would be:
>
> 10:00:00:100
> 10:00:00:200
> 10:00:00:300
> 10:00:00:400
>
> I am looking to build an empty zoo/xts object with time index from 10am to
> 3pm, index jumps by 100ms each row.
>
Here are three ways. as.xts(z2) could be used to turn the second one into xts.
library(zoo)
library(chron)
len <- 5 * 60 * 60 * 10 + 1
# use chron times class
z1 <- zoo(, seq(times("10:00:00"), times("15:00:00"), length = len))
# use POSIXct times
z2 <- zoo(, seq(as.POSIXct("2011-01-01 10:00:00"),
as.POSIXct("2011-01-01 15:00:00"), length = len))
# number intervals from 1 to len
z3 <- zoo(, seq_len(len))
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