[BioC] Kooky probe names (followup)

[Vincent Carey 525-2265]

> > second[1:2,][1:2,]
>           X1        X2          X3        X4
> 1007_s_at  0 0.6255407 -0.08225843 -1.058674
> 1053_at    0 0.6037322 -0.19470686 -1.144492
> > second[1:2,][1:3,]
>            X1        X2          X3        X4
> X1007.s.at  0 0.6255407 -0.08225843 -1.058674
> X1053.at    0 0.6037322 -0.19470686 -1.144492
> NA         NA        NA          NA        NA
> >

for this part, you can see what is happening by
doing

debug(get("[.data.frame"))

and running your second subscripting operation.
make.names is invoked when any row name is NA.

it may be worth posting this to r-help.  it is
not really a bioconductor issue.