R help - Oct 2008 - replace() error: new columns would leave holes after existing columns

Hello, I have a problem with using replace() to convert a vector of dates 
from yyyy-mm-dd to julian date.

For example, I type 

        replace(x,2004-05-14,134)

and I receive an error:

        Error in `[<-.data.frame`(`*tmp*`, list, value = 134) : 
  new columns would leave holes after existing columns

If I can successfully convert, I have a script that will convert all of 
the dates in the vector (i.e., the same line repeated with the next 
yyyy-mm-dd and corresponding julian day).  Any help would be much 
appreciated.

Thank you,
Kirsten

Kirsten Barrett
Mendenhall Postdoctoral Fellow, USGS
Alaska Science Center
4210 University Drive
Anchorage, AK
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Hi Kirsten,

The second argument of replace() is actually an index, so it's trying to
replace element number 2004-5-14 = 1985 with 134!  See ?replace.  I would
need more of your code to understand your error exactly.

I think you would be better off converting your dates to date format (?Date)
and then using the julian() function to convert them to Julian.

-- 
Kellie Wills
Engineering Service Manager
REvolution Computing



On Fri, Oct 31, 2008 at 12:17 PM, Kirsten M Barrett
<kbarrett@usgs.gov>wrote:
> Hello, I have a problem with using replace() to convert a vector of dates
> from yyyy-mm-dd to julian date.
>
> For example, I type
>
>        replace(x,2004-05-14,134)
>
> and I receive an error:
>
>        Error in `[<-.data.frame`(`*tmp*`, list, value = 134) :
>  new columns would leave holes after existing columns
>
> If I can successfully convert, I have a script that will convert all of
> the dates in the vector (i.e., the same line repeated with the next
> yyyy-mm-dd and corresponding julian day).  Any help would be much
> appreciated.
>
> Thank you,
> Kirsten
>
> Kirsten Barrett
> Mendenhall Postdoctoral Fellow, USGS
> Alaska Science Center
> 4210 University Drive
> Anchorage, AK
>        [[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.
>
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