Re: [R] alternative to matching/merge?

From: hadley wickham <>
Date: Fri, 13 Jun 2008 16:53:53 -0500

On Fri, Jun 13, 2008 at 11:45 AM, jim holtman <> wrote:
> What is the structure of 'd.frame' and 'segFile'? Run Rprof so that
> we can see which of the functions it is spending its time in. What
> happens if x$index is not in seqFile$index? Are the values in the
> 'index' unique in both structures? Subsetting a data frame can be
> expensive when compared to using a matrix. Could you use a matrix
> instead of a data frame; are all the columns the same mode? Again
> either a subset of data would be helpful or an 'str' on the data
> objects being used so that we can understand what they are.

A few other ideas to try:



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Received on Fri 13 Jun 2008 - 21:59:21 GMT

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