[R] date

jim holtman jholtman at gmail.com
Wed Sep 26 21:52:44 CEST 2007


What is the error message?  What does 'str(MyData)' show?  I read your
data in and it worked fine.

> x <- read.table(textConnection("  name value      times
+ 1   A1     2 2006-05-12
+ 2   A2     3 2006-05-16
+ 3   A3     1 2006-05-12
+ 4   A4     4 2006-05-12
+ 5   A5     2 2006-05-16
+ 6   A6     1 2006-05-12"), header=TRUE)
> str(x)
'data.frame':   6 obs. of  3 variables:
 $ name : Factor w/ 6 levels "A1","A2","A3",..: 1 2 3 4 5 6
 $ value: int  2 3 1 4 2 1
 $ times: Factor w/ 2 levels "2006-05-12","2006-05-16": 1 2 1 1 2 1
> x$times <- as.POSIXct(as.character(x$times))
> str(x)
'data.frame':   6 obs. of  3 variables:
 $ name : Factor w/ 6 levels "A1","A2","A3",..: 1 2 3 4 5 6
 $ value: int  2 3 1 4 2 1
 $ times:'POSIXct', format: chr  "2006-05-12" "2006-05-16"
"2006-05-12" "2006-05-12" ...
> plot(x$times, x$value)  # works fine


On 9/26/07, Samuel Okoye <samuoko at yahoo.com> wrote:
> Hello,
>
>  I have got the following problem:
>
>  > setwd("C:/temp")
> >  library(xlsReadWrite)
> >  MyData <- read.xls(file="Mappe1.xls", colNames = TRUE,dateTimeAs = "isodatetime")
> >  attach(MyData)
> >  MyData
>  name value      times
> 1   A1     2 2006-05-12
> 2   A2     3 2006-05-16
> 3   A3     1 2006-05-12
> 4   A4     4 2006-05-12
> 5   A5     2 2006-05-16
> 6   A6     1 2006-05-12
> > plot(times,value)
> Error........
>
>  Could you help me please?
>
>  Thanks alot,
>  Samuel
>
>
> ---------------------------------
>
> ______________________________________________
> R-help at 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.
>
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?



More information about the R-help mailing list