[R] plyr: issue with column names when converting one element list to dataframe

[hadley wickham]

Hi Mark,

Could you send a the results of dput(l)?  It will make exploration easier.

Hadley

On Wed, Jan 6, 2010 at 8:07 AM, Mark Heckmann <mark.heckmann at gmx.de> wrote:
>
> Hi,
>
> I have an issue concerning plyr.
> I have a list l as output from dlply.
>
>> l
> $`1`
>     (0.5,1.5] (1.5,2.5] (2.5,3.5]  (3.5,4.5]
> f5_9 0.2342569  0.465995 0.2518892 0.04785894
>
> attr(,"split_type")
> [1] "data.frame"
> attr(,"split_labels")
>  f15
> 1   1
>
> When I convert it into a dataframe I get.
>
>> list_to_dataframe(l)
>  .id X.0.5.1.5. X.1.5.2.5. X.2.5.3.5. X.3.5.4.5.
> 1   1  0.2342569   0.465995  0.2518892 0.04785894
>
> The column labels have names I do not want.
> When I do the same using two list elements everything is fine, that is
> column names are as desired.
>
>> l2 <- c(l,l)
>> list_to_dataframe(l2)
>  .id (0.5,1.5] (1.5,2.5] (2.5,3.5]  (3.5,4.5]
> 1   1 0.2342569  0.465995 0.2518892 0.04785894
> 2   1 0.2342569  0.465995 0.2518892 0.04785894
>
> Does someone know a remedy?
>
> TIA,
> Mark
>
>
>> Mark Heckmann
>> Dipl. Wirt.-Ing. cand. Psych.
>> Vorstraße 93 B01
>> 28359 Bremen
>> Blog: www.markheckmann.de
>> R-Blog: http://ryouready.wordpress.com
>
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