z - matrix( c(1960,1960,1961,1,9,6), 3, 2 )
1. Using chron:
require(chron)
chron( paste( z[,2], 1, z[,1], sep=/ ) )
2. Using POSIXct:
ISOdate( z[,1], z[,2], 1 ) # relative to GMT time zone
or
ISOdate( z[,1], z[,2], 1, tz= ) # relative to current time zone
---
Date: Mon, 8
See ?DateTimeClasses, ?strptime, and ?as.character
This example from strptime should get you going:
## read in date/time info in format 'm/d/y h:m:s'
dates - c(02/27/92, 02/27/92, 01/14/92,
02/28/92, 02/01/92)
times - c(23:03:20, 22:29:56, 01:03:30,
