[R] summarize-plyr package

[baptiste auguie]

Hi,

it works for me with plyr version 0.1.9. Try upgrading to the latest
version, or post your sessionInfo()


HTH,

baptiste

2009/9/25 Veerappa Chetty <chettyvk at gmail.com>:
> Hi,I am using the amazing package 'plyr". I have one problem. I would
> appreciate help to fix the following error: Thanks.
> ______________________________
>
>> library(plyr)
>> data(baseball)
>> summarise(baseball,
> + duration = max(year) - min(year),
> + nteams = length(unique(team)))
> Error: could not find function "summarise"
>> ddply(baseball, "id", summarise,
> + duration = max(year) - min(year),
> + nteams = length(unique(team)))
> Error in llply(.data = .data, .fun = .fun, ..., .progress = .progress) :
>  object "summarise" not found
> --------------------------------------------
>
> --
> Professor of Family Medicine
> Boston University
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> emails: chettyvk at gmail.com,vchetty at bu.edu
>
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