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On 10/04/2011 06:23, Toby Considine wrote: > Interesting question, and one that goes to the heart of some of my current > obsessions... > > Is there a standard XSD of SI units for inclusion somewhere on the web > > And > > Is there a standard XSD of SI scale ( peta / tera / giga / mega/ ...) for > inclusion anywhere on the web? As you probably know given your affiliation, the decimal SI abbreviations (K, M, G etc, for 10^3, 10^6 etc) are defined in ISO 1000:2004, and the binary prefixes (Ki, Mi, Gi, which we should use for 2^10, 2^20 etc, but don't) are defined in ISO 80000-13:2008. But I'm not aware of any standard that maps these into XSD types. Michael Kay Saxonica > > tc > > > > "He who fights with monsters should look to it that he himself does not > become a monster, and if you stare long into an abyss, the abyss also stares > into you." - Fredrich Nietzche > > Toby Considine > TC9, Inc > TC Chair: oBIX& WS-Calendar > TC Editor: EMIX, EnergyInterop > U.S. National Inst. of Standards and Tech. Smart Grid Architecture Committee > > > Email: Toby.Considine@gmail.com > Phone: (919)619-2104 > http://www.tcnine.com/ > blog: www.NewDaedalus.com > > > > -----Original Message----- > From: Liam R E Quin [mailto:liam@w3.org] > Sent: Saturday, April 09, 2011 9:41 PM > To: John Cowan > Cc: Costello, Roger L.; xml-dev@lists.xml.org > Subject: Re: ANN: a portable data component -- length > > On Sat, 2011-04-09 at 15:55 -0400, John Cowan wrote: >> Liam R E Quin scripsit: >> >>> (I'd use metric/SI units in a program as they're easier to deal >>> with, and mixed-based ambiguity like 3 feet 7 inches doesn't occur) >> If you want to represent measurements, as distinct from counts, you >> need to provide the measurement in the units actually measured. > +1 if they are actually being measured; one also has to give tolerance. > > On Pete Cordell's point, the name of the element - I used<measurement> > rather than<distance> for no good or bad reason - one can't know a priori > whether the fact it's a measurement is more or less important than the fact > it's a linear measurement through space, a distance. One is not > intrinsically more "semantic" than the other. But we can know that there's > a common danger in using element names for field names that come from some > non-XML source, as you might end up with non-XML chracters to deal with, or > markup in the field name -- e.g. mathematical notation, or annotations > (Japanese ruby comes to mind). > > Someone else said that Normal Form is no gold standard - it isn't, but the > principle of not duplicating data still holds. If Costelloitis takes hold, > you should at least mark which of two values is primary and which was > derived. > > <jug id="jug"> > <capacity units="imperial_UK">4 gallons</capacity> > <capacity units="US" derivedfrom="imperial_UK">4.5 gallons</capacity> > <size>little</size> > <colour>brown</colour> > </jug> > > > -- > Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ Pictures > from old books: http://www.fromoldbooks.org/ > > > > _______________________________________________________________________ > > XML-DEV is a publicly archived, unmoderated list hosted by OASIS > to support XML implementation and development. To minimize > spam in the archives, you must subscribe before posting. > > [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ > Or unsubscribe: xml-dev-unsubscribe@lists.xml.org > subscribe: xml-dev-subscribe@lists.xml.org > List archive: http://lists.xml.org/archives/xml-dev/ > List Guidelines: http://www.oasis-open.org/maillists/guidelines.php > > > > _______________________________________________________________________ > > XML-DEV is a publicly archived, unmoderated list hosted by OASIS > to support XML implementation and development. To minimize > spam in the archives, you must subscribe before posting. > > [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ > Or unsubscribe: xml-dev-unsubscribe@lists.xml.org > subscribe: xml-dev-subscribe@lists.xml.org > List archive: http://lists.xml.org/archives/xml-dev/ > List Guidelines: http://www.oasis-open.org/maillists/guidelines.php > >
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