[R] as.POSIXct on vector weird output

[jim holtman]

'f$V1' is a factor.

try

as.POSIXct(as.character(f$V1), format="%m/%d/%Y %H:%M:%S")

You need to convert to a character first.

On Mon, Sep 12, 2011 at 7:24 PM, bradford <fingermark at gmail.com> wrote:
> I don't know R, so maybe I've done something wrong, but I'm working off an
> example I saw on the web and wondering why as.POXIXct isn't returning the
> same result on f$V1 as it is on z.  Did I do something wrong?  Or is it a
> problem with my build?
>
>> f$V1
>  [1] 09/11/2011 13:46:39 09/11/2011 13:45:18 09/11/2011 13:44:58
>  [4] 09/11/2011 13:40:02 09/11/2011 13:37:58 09/11/2011 13:36:09
>  [7] 09/11/2011 13:32:31 09/11/2011 13:25:29 09/11/2011 13:24:40
> [10] 09/11/2011 13:23:48
> 10 Levels: 09/11/2011 13:23:48 09/11/2011 13:24:40 ... 09/11/2011 13:46:39
>> z
> [1] "09/11/2011 13:46:39"
>> as.POSIXct(z, format="%m/%d/%Y %H:%M:%S")
> [1] "2011-09-11 13:46:39 EDT"
>> as.POSIXct(f$V1, format="%m/%d/%Y %H:%M:%S")
>  [1] "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST"
>  [5] "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST" "0009-11-20 EST"
>  [9] "0009-11-20 EST" "0009-11-20 EST"
>
> ---------
> R version 2.12.2 (2011-02-25)
> Copyright (C) 2011 The R Foundation for Statistical Computing
> ISBN 3-900051-07-0
> Platform: x86_64-apple-darwin10.8.0 (64-bit)
>
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-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?