Re: [R] sparse data frame (crsp?)

From: <>
Date: Mon 25 Jul 2005 - 18:58:09 EST

You could try reading it in a chunk at a time and making a sparse matrix with SparseM, unless you really need some functionality of dataframes.

R Koenker

> dear R wizards: does R have the facilities to handle sparse data
> frames? I am thinking of reading a data base like the daily CRSP data
> into R, observations being firms, columns being days, data being stock
> returns. but this will only fit into my memory if I can convince R to
> not have to store missing observations, and to return NA upon read
> access to missing observations. pointers appreciated. sincerely, /iaw
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> mailing list PLEASE do read the posting guide! Received on Mon Jul 25 19:02:15 2005

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