[R] [FORGED] Re: Using apply

Rolf Turner r@turner @end|ng |rom @uck|@nd@@c@nz
Wed Oct 31 06:03:15 CET 2018

On 10/31/18 3:47 PM, jim holtman wrote:

>> s2 <- apply(x*x, 2, sum)
>> s2
> [1]  55 330


It seems to me to be more "natural" (and perhaps more amenable to 
generalisation) to do:

     s2 <- apply(x,2,function(v){sum(v^2)})

But it's probably just a matter of taste.



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