problem with apply(m, 1, min, na.rm=T)

Passing extra arguments to FUN=mean or median in apply
seems fine, but when FUN=min warnings are generated?
See below.

Any ideas why?

Best regards,
Ryszard

Ryszard Czerminski
AstraZeneca Pharmaceuticals LP

m

     [,1] [,2]
[1,]    1    2
[2,]    3   NA
[3,]   NA   NA

apply(m, 1, median, na.rm=T)

[1] 1.5 3.0  NA

apply(m, 1, mean, na.rm=T)

[1] 1.5 3.0 NaN

apply(m, 1, min, na.rm=T)

[1]   1   3 Inf
Warning message:
In FUN(newX[, i], ...) : no non-missing arguments to min; returning  
Inf

RTFM:

      The minimum and maximum of a numeric empty set are '+Inf' and
      '-Inf' (in this order!) which ensures _transitivity_, e.g.,
      'min(x1, min(x2)) == min(x1, x2)'.  For numeric 'x' 'max(x) ==
      -Inf' and 'min(x) == +Inf' whenever 'length(x) == 0' (after
      removing missing values if requested).

	cheers,

		Rolf Turner

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