In the course of writing a bit of somewhat convoluted code I recently
made a silly error that revealed the following phenomenon:
m <- matrix(1:10,nrow=2,ncol=c(5,4))
produces
[,1] [,2] [,3] [,4] [,5]
[1,] 1 3 5 7 9
[2,] 2 4 6 8 10
That is, the nonsense value of c(5,4) for the "ncol" argument is
accepted, without comment --- the first entry of the given ncol argument
is used.
It might be argued that this is a reasonable accommodation of the user's
ineptitude. I am of the opinion that an error should be thrown if the
value of ncol is not an integer scalar.
I have also discerned that if ncol is not an integer, it is replaced by
its floor value.
Is this a Good Thing?
What do others think?
cheers,
Rolf Turner
--
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
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