you could use something like:
dates - c(73, 74, 02, 1973, 1974, 2002)
###
nd - nchar(dates)
substr(dates, ifelse(nd == 2, 1, 3), nd)
I hope it helps.
Best,
Dimitris
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven
John Logsdon wrote:
Hello
I know that R's string functions are not as extensive as those of Unix but
I need to do some text handling totally within an R environment because
the target is a Windows system which will not have the corresponding shell
utilities, sed, awk etc.
Can anyone
On 11/27/05, John Logsdon [EMAIL PROTECTED] wrote:
Hello
I know that R's string functions are not as extensive as those of Unix but
I don't think this statement is true although I have seen it repeated.
I need to do some text handling totally within an R environment because
the target is a
R is blameless here: it works as documented and in the same way as
POSIX tools. It agrees with 'sed' using the same syntax (modulo the
shell-specific quoting rules) e.g. in csh
% echo 1973 | sed 's/[19|20]\([0-9][0-9]\)/\1/g'
973
% echo 1973 | sed
