[R] references in R

[Paul Hiemstra]

 Hi Jonas,

You could use a construct like this:

out = do.call('rbind', lapply(list, do.stuff))

Or you could use ldply from the plyr package:

out = ldply(list, do.stuff)

I use the plyr package a lot for these kinds of operations. It also
supports a progress bar and parallel computing.

cheers,
Paul

On 05/24/2011 09:16 AM, Jonas Zierer wrote:
> Hi everybody,
>
> my problem is the following: I have a function which produces for an
> input number a dataframe with a fixed number of columns and 0 to 10
> rows.
> Now i want to apply this function to a vector with different inputs and
> merge all these result-dataframes in one data.frame.
>
>
> Can i give a data.frame-reference to the function, so that the result of
> the function is not returned but appended to the given data.frame?
>
>
> Or i could use lapply, but then i have to find a way to merge the single
> dataframes in the returned list (the only solution i found for this is a
> for loop over all list entries and merging them...but there must be a
> better solution, or?)
>
> thx. bye
> Jonas
>
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-- 
Paul Hiemstra, Ph.D.
Global Climate Division
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