Subject: Re: [xsl] How to multiply 2 sequences ? From: "Dimitre Novatchev" <dnovatchev@xxxxxxxxx> Date: Wed, 7 Nov 2007 08:17:45 -0800 |
> If that is indeed the requirement (and I wasn't able to work it out from the > posting) then it can be done in XPath 2.0 (without any help from FXSL) as > > sum(for $i in 1 to count($x) return $x[$i] * $y[$i]) Probably I am a little bit biased :-), but comparing sum(f:zipWith(f:mult(), $vect1, $vect2)) to sum(for $i in 1 to count($x) return $x[$i] * $y[$i]) the former seems slightly more readable/elegant. -- Cheers, Dimitre Novatchev --------------------------------------- Truly great madness cannot be achieved without significant intelligence. --------------------------------------- To invent, you need a good imagination and a pile of junk ------------------------------------- You've achieved success in your field when you don't know whether what you're doing is work or play On Nov 7, 2007 6:45 AM, Michael Kay <mike@xxxxxxxxxxxx> wrote: > > > > It seems that you are trying to obtain the scalar product of > > two vectors: > > > > X = {x1, x2, ... , xn} > > > > Y = {y1, y2, ... , yn} > > > > X.Y = x1.y1 + x2.y2 + ... + xn.yn > > > > If that is indeed the requirement (and I wasn't able to work it out from the > posting) then it can be done in XPath 2.0 (without any help from FXSL) as > > sum(for $i in 1 to count($x) return $x[$i] * $y[$i]) > > Michael Kay > http://www.saxonica.com/
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