Patch for NDArray for filter.oct

[David Bateman]

Dear all,

I converted filter.oct to be usuable with NDArray's and made the call
compatiable with Matlab. That is a fifth argument can be given defining
the dimension along which the filtering occurs within a array argument.

It seems to me that there are lots of functions that need the same treatment
as this. Especially sort.oct. However, as I wrote code for sort.oct in
octave-forge it would be stupid to have to convert sort.oct twice (Once
in octave and once in octave-forge). Could sort be imported from octave-forge
into octave?

Regards
David

-- 
David Bateman                                address@hidden
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