[R] Working With Variables Having Different Lengths

Rich Shepard rshepard at appl-ecosys.com
Mon Oct 24 18:10:51 CEST 2011


On Mon, 24 Oct 2011, David Winsemius wrote:

> The appearance of levels with all zeroes is probably because I didn't include 
> drop.unused.levels = FALSE in the xtabs specification.

   OK. Adding 'drop.unused.levels' does make a huge difference.

Thanks,

Rich



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