Re: [xml-dev] ANN: a portable data component -- length

[Stephen D Green <stephengreenubl@gmail.com>]

Try MathML units
http://www.w3.org/TR/mathml-units/
----
Stephen D Green



On 11 April 2011 09:25, Michael Kay <mike@saxonica.com> wrote:
> 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: [xml-dev] 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
>>
>>
>
>
> _______________________________________________________________________
>
> 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
>
>