You can keep each dataframe as a separate file and process them that way.
You can look into storing in a relational database or using filehash.  It
all depends on how you want to process the data later.

On Tue, Dec 29, 2009 at 8:40 AM, Hao Cen <hcen@andrew.cmu.edu> wrote:

> Hi,
>
> I currently combine multiple processed data (data frame) into a list and
> save the list as ".rda" using the save command. When new data come, I load
> the rda file, process the new data into a data frame, append the data
> frame to the end of the list, and save the whole list to the disk. The
> loading and saving steps are quite time consuming. Since I don't need to
> change the old data in the list when new data come, I wonder if there is
> an efficient way to update the rda efficiently, e.g. appending the new
> data to the rda file directly without loading the whole rda file?
>
> Any suggestions would be appreciated.
>
> thanks
>
> Jeff
>
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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

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