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 Dec 2003 15:48:20 -0600 From: Erin Hodgess <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: [R] Matrix to dates Let's try again! I have a matrix in which the first column is a four digit year, and the second column is a 2 digit month. How do I convert the matrix to a date function, please? Thanks, Erin Version 1.8.0 mailto: [EMAIL PROTECTED] ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help