[R] sapply puzzlement

David A. Johnston dajohnston at ucdavis.edu
Fri Jan 28 01:45:39 CET 2011

sapply(z, function(row) ...) does not actually grab a row at a time out of
'z'. It grabs a column (because 'z' is a data.frame)

You may want:
t(apply(z, 1, function(row) row - means))


t(t(z) - means)

Hope that helps,

-David Johnston
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