On May 2, 2010, at 9:39 AM, Mohan L wrote:
Hi all,
I have data size of :
dim(sample)
[1] 35943 17
Your code has a different name for the sample object. And it would be
more informative if you offered str on "sample1".
--
David.
The first column is "stdate" - is date ( 01/11/2009
00:00:00,02/11/2009
00:00:00,02/11/2009 00:00:00 etc... )
Login is 13th column - is numbers (12,0,1 erc...)
The below operation return the following error.
sample1 <- read.csv(file="sample1.csv",sep=",",header=TRUE)
avglog <- with(sample1, tapply(Login, stdate, mean))
Warning messages:
1: In mean.default(X[[1L]], ...) :
argument is not numeric or logical: returning NA
2: In mean.default(X[[2L]], ...) :
argument is not numeric or logical: returning NA
3: In mean.default(X[[3L]], ...) :
argument is not numeric or logical: returning NA
4: In mean.default(X[[4L]], ...) :
argument is not numeric or logical: returning NA
5: In mean.default(X[[5L]], ...) :
argument is not numeric or logical: returning NA
6: In mean.default(X[[6L]], ...) :
argument is not numeric or logical: returning NA
7: In mean.default(X[[7L]], ...) :
argument is not numeric or logical: returning NA
avglog
01/11/09 00:00 02/11/09 00:00 03/11/09 00:00 04/11/09 00:00 05/11/09
00:00
NA NA NA
NA NA
How to fix this issue?
Thanks & Rg
Mohan L
[[alternative HTML version deleted]]
______________________________________________
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.
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.
