[R] Data Frame Search Slow

TimothyDalbey tmdalbey at gmail.com
Tue Nov 22 23:01:20 CET 2011

Answer to my own question:

ush <- data.table(read.csv(...))
setkey(ush, product_id)
s1 <- ush[J[product.id]]

> user  system elapsed 
>   0.000   0.000   0.003 

It seems like that's the method to use!  Amazing.

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