[R] Replicating the SPlus "twoway" function

[Taylor, Z Todd]

Is there a package somewhere that replicates the SPlus twoway() function?  That function models a 2-d data matrix, which may contain NAs, as

x[i,j] = grand.effect + row.effect[i] + col.effect[j] + resid[i,j]

I'm sort of resurrecting some ancient S code and it would be handy if a twoway() function were available in R.  I've googled and RSiteSearch'd, but maybe there's something out there that goes by another name?

Thanks.

--Todd
--
Z. Todd Taylor
Pacific Northwest National Laboratory
Why are they called 'speed' bumps?



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