[R] Problems Dating....

[Struckmeier, Nathanael]

I'll give this a try and mess with what format to convert it to. Thanks
again!




-----Original Message-----
From: Stephan Kolassa [mailto:Stephan.Kolassa at gmx.de] 
Sent: Wednesday, June 01, 2011 2:10 PM
To: Struckmeier, Nathanael
Cc: R-help at r-project.org
Subject: Re: [R] Problems Dating....

Hi Nat,

I guess something like
as.Date(as.character("3/4/2007"),format="%d/%m/%Y")
should work - as.character() coerces the factors to characters, which 
the as.Date() function can work with, given the right format argument.

HTH
Stephan


Am 01.06.2011 22:59, schrieb Struckmeier, Nathanael:
> I'm trying to convert a column in a data frame with dates from a
> "Factor" type to a "Date Object" but I am encountering and error. (I
am
> having trouble plotting an x,y scatter and I suspect it's something
with
> my data format). I have a table with two columns and 8,000 rows.
>
>> dsort=read.delim("C:\\Documents and Settings\\E066582\\My
> Documents\\R\\R-2.13.0\\bin\\dsort.txt")
>
>
>
> "dsort"                                                #name of
> data.frame
>
>> colnames(dsort)[1]                     #name of column 1
>
> [1] "Date"
>
>> colnames(dsort)[2]                     #name of column 2
>
> [1] "Qty"
>
>> class(dsort$Date)                         #checked data type of
column
> "Date" and it came back as a factor
>
> [1] "factor"
>
>> Date2=as.Date(dsort$Date)    #attempt at changing the data type from
a
> factor to a date object (see error below).
>
> Error in charToDate(x) :
>
>    character string is not in a standard unambiguous format
>
>
>
> Dates in my table are listed in "3/4/2007" format.
>
> StatBat2
>
>
>
>
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>
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