Element-by-element operation (adding)

On 23 May 2016, at 07:44 , Peter Langfelder <peter.langfelder at gmail.com> wrote:

or

t(apply(v, 1, `+`, b))

Or, as you're messing with transposes anyways, use the fact that the column-wise counterpart is automagically handled by recycling:

t(t(v)+b)

Or, look Ma, no transposes
 
v + rep(b, each=nrow(v))

(_always_ doublecheck the logic when you apply these and similar techniques! I have seen my share of student code where recycling had been applied along the wrong dimension of a matrix...)

Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
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