On Apr 15, 2010, at 7:20 PM, prem_R wrote:
x <- c("2000/01/01",
"2001
/
02
/
01
","2000
/
03
/
01
","2000
/
04
/
01
","2000
/
05
/01","2000/06/01","2000/07/01","2000/08/01","2000/09/01","2000/10/01")
xd <- as.data.frame(x)
levels(xd$x) <- gsub("/", "-", levels(xd$x))
fix(xd)
This works fine .but with one more variable say xsd in the data
frame i'm
getting the following error
Error in levels(sa$date1) <- gsub("/", "-", levels(sa$date)) :
attempt to set an attribute on NULL
Cannot reproduce the error (and you are asked in the Posting Guide to
include the code that creates the error rather than posting code that
does not).
x <- c("2000/01/01",
"2001
/
02
/
01
","2000
/
03
/
01
","2000
/
04
/
01
","2000
/
05/01","2000/06/01","2000/07/01","2000/08/01","2000/09/01","2000/10/01")
xd <- data.frame(x=x, a=1) # creates another column in "a".
levels(xd$x) <- gsub("/", "-", levels(xd$x))
> xd
x a
1 2000-01-01 1
2 2001-02-01 1
3 2000-03-01 1
4 2000-04-01 1
5 2000-05-01 1
6 2000-06-01 1
7 2000-07-01 1
8 2000-08-01 1
9 2000-09-01 1
10 2000-10-01 1
> sessionInfo()
R version 2.10.1 RC (2009-12-09 r50695)
x86_64-apple-darwin9.8.0
locale:
[1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] splines stats graphics grDevices utils datasets
methods base
other attached packages:
[1] adapt_1.0-4 Hmisc_3.7-0 survival_2.35-7 mapdata_2.1-1
maps_2.1-0
loaded via a namespace (and not attached):
[1] cluster_1.12.1 grid_2.10.1 lattice_0.18-3 tools_2.10.1
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______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
