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(削除) <h1> (削除ここまで)Measure microformat(削除) </h1> (削除ここまで)
(追記) {{DISPLAYTITLE: (追記ここまで)Measure microformat (追記) research}} (追記ここまで)
(削除) Currently this (削除ここまで)microformat (削除) is in exploratory stage (削除ここまで). (削除) Contributions should focus on real (削除ここまで)examples (削除) from the Web, existing (削除ここまで)formats(削除) /encoding of measures. (削除ここまで)
(追記) <div style="float:right;margin-left:1em">__TOC__</div> (追記ここまで)
(追記) This page is for researching and developing a [[measure]] (追記ここまで)microformat. (追記) Per the [[process]]: (追記ここまで)
(追記) * [[measure- (追記ここまで)examples(追記) ]] (追記ここまで)
(追記) * [[measure- (追記ここまで)formats(追記) ]] (追記ここまで)
(追記) * [[measure-brainstorming]] (追記ここまで)
== The problem ==
== The problem ==
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The Measurement microformat will enable unambiguous description of physical quantities and thus provide a solid ground for data sharing and automation in many areas.
The Measurement microformat will enable unambiguous description of physical quantities and thus provide a solid ground for data sharing and automation in many areas.
== (削除) Draft Schema (削除ここまで)==
== (追記) Next Steps (追記ここまで)==
* (追記) clean-up (追記ここまで)[[(追記) measure-examples (追記ここまで)]] (追記) to refer to (追記ここまで)<(追記) em (追記ここまで)>(追記) current (追記ここまで)</(追記) em (追記ここまで)> (追記) real world examples (追記ここまで)
(削除) Rationale: The names "value" and "type" are taken from [[hCard]]; "item" is used from hReview. Should we include "tolerance" as well? (削除ここまで)
* (追記) update (追記ここまで)[[(追記) measure (追記ここまで)-(追記) formats (追記ここまで)]] with (追記) formats (追記ここまで)from (追記) other recent efforts such (追記ここまで)as (追記) schema (追記ここまで).(追記) org (追記ここまで)
* (追記) massive clean (追記ここまで)-(追記) up (追記ここまで)of [[(追記) measure (追記ここまで)-(追記) brainstorming (追記ここまで)]]
(削除) === Standard Measure Schema === (削除ここまで)
* (削除) '''<code>hmeasure</code>''' (削除ここまで)
(削除) ** '''<code>value</code>''' {1} (numeric) (削除ここまで)
(削除) ** '''<code>unit</code>''' {1} (unit) (削除ここまで)
(削除) ** <code>item</code>? (text | (削除ここまで)[[(削除) hcard|hCard (削除ここまで)]] (削除) | [[hcalendar|hCalendar]]) (削除ここまで)
(削除) ** <code>type</code> ? (text, e.g. "height", "width", "weight") (削除ここまで)
(削除) === Angular Measure Schema === (削除ここまで)
(削除) * ''' (削除ここまで)<(削除) code (削除ここまで)>(削除) hmeasure (削除ここまで)</(削除) code (削除ここまで)>(削除) ''' (削除ここまで)
*(削除) * '''<code>value</code>''' {1} (degree) (削除ここまで)
(削除) ** <code>item</code>? (text | (削除ここまで)[[(削除) hcard|hCard]] | [[hcalendar|hCalendar]]) (削除ここまで)
(削除) ** <code>type</code> ? (text, e.g. "angle of elevation") (削除ここまで)
(削除) === Money Schema === (削除ここまで)
(削除) * '''<code>hmoney</code>''' (削除ここまで)
(削除) ** '''<code>value</code>''' {1} (numeric) (削除ここまで)
(削除) ** '''<code>unit</code>''' {1} ([http://en.wikipedia.org/wiki/ISO_4217 ISO 4217 code]) (削除ここまで)
(削除) == Value == (削除ここまで)
(削除) Arbitrary white space {{may}} be included in the value to improve readability. Parsers {{must}} strip out all white space before further processing. (削除ここまで)
(削除) In the standard schema, the value {{must}} be a number, formatted according to the following EBNF pattern: (削除ここまで)
(削除) <pre>non-zero-digit = "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ; (削除ここまで)
(削除) digit = "0" | non-zero-digit ; (削除ここまで)
(削除) natural = non-zero-digit , {digit} ; (削除ここまで)
(削除) integer = "0" | [ " (削除ここまで)-(削除) " (削除ここまで)] (削除) , natural ; (削除ここまで)
(削除) dot-decimal = integer , "." , {digit} ; (削除ここまで)
(削除) comma-decimal = integer , "," , {digit} ; (削除ここまで)
(削除) e-sign = "e" | "E" ; (削除ここまで)
(削除) mantissa = dot-decimal | comma-decimal | integer ; (削除ここまで)
(削除) sci-number = mantissa , e-sign , integer ; (削除ここまで)
(削除) number = dot-decimal | comma-decimal | integer | sci-number ;</pre> (削除ここまで)
(削除) This roughly corresponds to a subset of [http://en.wikipedia.org/wiki/C_syntax#Floating_point_types C syntax (削除ここまで)] (削除) for floating points and integers, excluding octal and hexadecimal representations. However, note that both commas and stops may be used as decimal points. (削除ここまで)
(削除) The Unicode minus sign (U+2212) and ASCII-compatible hyphen-minus (U+002D) {{must}} both be treated as acceptable indicators of a negative number. In addition, the symbols ¼ (U+00BC), ½ (U+00BD) and ¾ (U+00BE) {{should}} be supported as aliases for 0.25, 0.5 and 0.75 respectively. (削除ここまで)
(削除) In the angular measure schema, a measure is expressed as a combination of up to three numeric components: called degrees, minutes and seconds. Any combination of these components may be used, except when degrees and seconds are given minutes {{must}} be present. The components {{must}} appear in the correct order (degrees, minutes, seconds). Each component must match the production rule for "mantissa" above, (削除ここまで)with (削除) the following additional constraints: (削除ここまで)
(削除) * Only the first component can bear a minus sign. Subsequent components "inherit" the negativity (or lack thereof) (削除ここまで)from (削除) their predecessors. (削除ここまで)
(削除) * All components except the last must match the production rule for "integer". (削除ここまで)
(削除) The numeric components {{must}} be indicated by appending a suffix to each component. Valid suffixes are: (削除ここまで)
(削除) * degree: "deg", U+00B0 degree symbol (°) (削除ここまで)
(削除) * minute: "min", straight single quote ('), U+2032 prime (′) (削除ここまで)
(削除) * second: "sec", straight double quote ("), U+2033 double prime (″) (削除ここまで)
(削除) === Examples === (削除ここまで)
(削除) * 1729 (the smallest number that can be expressed (削除ここまで)as (削除) the sum of two cubes in two different ways) (削除ここまで)
(削除) * 1 (削除ここまで).(削除) 61803399 (the golden ratio) (削除ここまで)
(削除) * 2,99792458e8 (the speed of light in a vacuum, measured in metres per second) (削除ここまで)
* -(削除) 40 (value at which Celcius and Farenheit scales are equal) (削除ここまで)
(削除) * 1,000,000,000 (''Invalid:'' commas may be used as decimal points, but not for grouping thousands.) (削除ここまで)
(削除) * 57.2958 deg (1 radian, in degrees) (削除ここまで)
(削除) * -57° 17′ 45.1″ (-1 radian, in degrees, minutes and seconds) (削除ここまで)
(削除) * 4° 30″ (''Invalid'': no minutes) (削除ここまで)
(削除) * 4° -30′ (''Invalid'': only first component may be negative) (削除ここまで)
(削除) The "unit" class is defined as an arbitrary string. Any unit may be used, but authors {{should}} attempt to use official SI units of measurement where appropriate. Parsers {{must}} recognise the following case-sensitive list (削除ここまで)of (削除) units, derived from the SI list of base units and official recognised derived units, with the addition of bits and bytes, which are commonly used on web pages, and litres and radians. (Note that gram appears in this table instead of kilogram. This is deliberate.) (削除ここまで)
(削除) {| border="1" (削除ここまで)
(削除) | gramme, g (削除ここまで)
(削除) The following SI prefixes {{must}} be supported (table taken from Wikipedia - it needs rewriting to remove irrelelevent columns). "u" {{must}} be treated as an alias for μ. (削除ここまで)
(削除) {| border="1" (削除ここまで)
(削除) |+ style="font-size:larger;font-weight:bold;"| (削除ここまで)[[(削除) SI prefix]]es (削除ここまで)
(削除) ! 1000<sup>n</sup> (削除ここまで)
(削除) ! 10<sup>n</sup> (削除ここまで)
(削除) ! Since<sup>[1]</sup> (削除ここまで)
(削除) ! [[Long and short scales|Short scale]] (削除ここまで)
(削除) ! [[Long and short scales|Long scale]] (削除ここまで)
(削除) ! [[Decimal]] equivalent in [[SI#SI writing style|SI writing style]] (削除ここまで)
(削除) | 1000<sup>8</sup> (削除ここまで)
(削除) | 10<sup>24</sup> (削除ここまで)
(削除) | [[yotta-]] (削除ここまで)
(削除) | [[Septillion]] (削除ここまで)
(削除) | [[Orders_of_magnitude_(numbers)#1024|Quadrillion]] (削除ここまで)
(削除) | 1 000 000 000 000 000 000 000 000 (削除ここまで)
(削除) | 1000<sup>7</sup> (削除ここまで)
(削除) | 10<sup>21</sup> (削除ここまで)
(削除) | [[zetta-]] (削除ここまで)
(削除) | [[Sextillion]] (削除ここまで)
(削除) | [[Trilliard]]<br><small>(thousand trillion)</small> (削除ここまで)
(削除) | 1 000 000 000 000 000 000 000 (削除ここまで)
(削除) | 1000<sup>6</sup> (削除ここまで)
(削除) | 10<sup>18</sup> (削除ここまで)
(削除) | [[Quintillion]] (削除ここまで)
(削除) | [[Trillion (disambiguation)|Trillion]] (削除ここまで)
(削除) | 1 000 000 000 000 000 000 (削除ここまで)
(削除) | 1000<sup>5</sup> (削除ここまで)
(削除) | 10<sup>15</sup> (削除ここまで)
(削除) | [[peta-]] (削除ここまで)
(削除) | [[Orders_of_magnitude_(numbers)#1015|Quadrillion]] (削除ここまで)
(削除) | [[Billiard (number)|Billiard]]<br><small>(thousand billion)</small> (削除ここまで)
(削除) | 1 000 000 000 000 000 (削除ここまで)
(削除) | 1000<sup>4</sup> (削除ここまで)
(削除) | 10<sup>12</sup> (削除ここまで)
(削除) | [[tera-]] (削除ここまで)
(削除) | [[Trillion (disambiguation)|Trillion]] (削除ここまで)
(削除) | [[Billion (disambiguation)|Billion]] (削除ここまで)
(削除) | 1 000 000 000 000 (削除ここまで)
(削除) | 1000<sup>3</sup> (削除ここまで)
(削除) | 10<sup>9</sup> (削除ここまで)
(削除) | [[giga-]] (削除ここまで)
(削除) | [[Billion (disambiguation)|Billion]] (削除ここまで)
(削除) | [[Milliard]]<br><small>(thousand million)</small> (削除ここまで)
(削除) | 1 000 000 000 (削除ここまで)
(削除) | 1000<sup>2</sup> (削除ここまで)
(削除) | 10<sup>6</sup> (削除ここまで)
(削除) | [[mega-]] (削除ここまで)
(削除) |colspan="2" align="center"| [[1000000 (number)|Million]] (削除ここまで)
(削除) | 1 000 000 (削除ここまで)
(削除) | 1000<sup>1</sup> (削除ここまで)
(削除) | 10<sup>3</sup> (削除ここまで)
(削除) | [[kilo-]] (削除ここまで)
(削除) | k<!-- (K)--> (削除ここまで)
(削除) |colspan="2" align="center"| [[1000 (number)|Thousand]] (削除ここまで)
(削除) | 1000<sup>2/3</sup> (削除ここまで)
(削除) | 10<sup>2</sup> (削除ここまで)
(削除) | [[hecto-]] (削除ここまで)
(削除) | h<!-- (H)--> (削除ここまで)
(削除) |colspan="2" align="center"| [[100 (number)|Hundred]] (削除ここまで)
(削除) | 1000<sup>1/3</sup> (削除ここまで)
(削除) | 10<sup>1</sup> (削除ここまで)
(削除) | [[deca-]] (削除ここまで)
(削除) | da<!-- (D)--> (削除ここまで)
(削除) |colspan="2" align="center"| [[10 (number)|Ten]] (削除ここまで)
(削除) ! 1000<sup>0</sup> (削除ここまで)
(削除) ! 10<sup>0</sup> (削除ここまで)
(削除) ! ''<font color="gray">(none)</font>'' (削除ここまで)
(削除) ! ''<font color="gray">(none)</font>'' (削除ここまで)
(削除) !colspan="2" align="center"| [[1 (number)|One]] (削除ここまで)
(削除) | 1000<sup>−1/3</sup> (削除ここまで)
(削除) | 10<sup>−1</sup> (削除ここまで)
(削除) | [[deci-]] (削除ここまで)
(削除) |colspan="2" align="center"| Tenth (削除ここまで)
(削除) | 1000<sup>−2/3</sup> (削除ここまで)
(削除) | 10<sup>−2</sup> (削除ここまで)
(削除) | [[centi-]] (削除ここまで)
(削除) |colspan="2" align="center"| Hundredth (削除ここまで)
(削除) | 1000<sup>−1</sup> (削除ここまで)
(削除) | 10<sup>−3</sup> (削除ここまで)
(削除) | [[milli-]] (削除ここまで)
(削除) |colspan="2" align="center"| Thousandth (削除ここまで)
(削除) | 1000<sup>−2</sup> (削除ここまで)
(削除) | 10<sup>−6</sup> (削除ここまで)
(削除) | [[micro-]] (削除ここまで)
(削除) | 1960<sup>[2]</sup> (削除ここまで)
(削除) |colspan="2" align="center"| Millionth (削除ここまで)
(削除) | 0.000 001 (削除ここまで)
(削除) | 1000<sup>−3</sup> (削除ここまで)
(削除) | 10<sup>−9</sup> (削除ここまで)
(削除) | [[nano-]] (削除ここまで)
(削除) | Billionth (削除ここまで)
(削除) | Milliardth (削除ここまで)
(削除) | 0.000 000 001 (削除ここまで)
(削除) | 1000<sup>−4</sup> (削除ここまで)
(削除) | 10<sup>−12</sup> (削除ここまで)
(削除) | [[pico-]] (削除ここまで)
(削除) | Trillionth (削除ここまで)
(削除) | Billionth (削除ここまで)
(削除) | 0.000 000 000 001 (削除ここまで)
(削除) | 1000<sup>−5</sup> (削除ここまで)
(削除) | 10<sup>−15</sup> (削除ここまで)
(削除) | [[femto-]] (削除ここまで)
(削除) | Quadrillionth (削除ここまで)
(削除) | Billiardth (削除ここまで)
(削除) | 0.000 000 000 000 001 (削除ここまで)
(削除) | 1000<sup>−6</sup> (削除ここまで)
(削除) | 10<sup>−18</sup> (削除ここまで)
(削除) | [[atto-]] (削除ここまで)
(削除) | Quintillionth (削除ここまで)
(削除) | Trillionth (削除ここまで)
(削除) | 0.000 000 000 000 000 001 (削除ここまで)
(削除) | 1000<sup>−7</sup> (削除ここまで)
(削除) | 10<sup>−21</sup> (削除ここまで)
(削除) | [[zepto-]] (削除ここまで)
(削除) | Sextillionth (削除ここまで)
(削除) | Trilliardth (削除ここまで)
(削除) | 0.000 000 000 000 000 000 001 (削除ここまで)
(削除) | 1000<sup>−8</sup> (削除ここまで)
(削除) | 10<sup>−24</sup> (削除ここまで)
(削除) | [[yocto-]] (削除ここまで)
(削除) | Septillionth (削除ここまで)
(削除) | Quadrillionth (削除ここまで)
(削除) | 0.000 000 000 000 000 000 000 001 (削除ここまで)
(削除) |colspan="8" | Notes:<br> 1. The 1795 dates identify prefixes in use since the metric system was introduced. The other dates are not necessarily dates of first use, but rather the date of recognition by a resolution of the [[CGPM]], which first met in 1889.<br> 2. The [[micrometre|micron]] was earlier recognized by the CGPM in 1948; that decision was abrogated in 1967-68. (削除ここまで)
(削除) === Combining units === (削除ここまで)
(削除) Units may be multiplied by separating with whitespace, or divided using a slash (/) or U+2215 division slash (∕). Units may be raised to an integer power using a caret character. The unicode superscript numerals 2 to 9 (U+00B2, U+00B3, U+2074-79) {{must}} be supported as aliases for raising to the appropriate integer powers. Multiplication is more associative than division. (削除ここまで)
(削除) * <span class="unit">kg m / s</span> (削除ここまで)
(削除) * <span class="unit">m/s^2</span> (削除ここまで)
(削除) * <span class="unit">meter³</span> (削除ここまで)
(削除) * <abbr class="unit" title="μm">micron</abbr> (削除ここまで)
(削除) === Angular units === (削除ここまで)
(削除) Units {{must not}} be given for measurements expressed in the degree schema: the degree itself is the unit. (削除ここまで)
(削除) If the standard schema is used, units may be given in radians (rad). (削除ここまで)
(削除) === Non-SI Units === (削除ここまで)
(削除) Authors {{may}} specify units other than those defined above, but {{should not}} assume that parsers will be able to interpret them. Authors using other units {{should}} provide a [[existing-rel-values|rel=glossary]] link to a page that defines the units. (削除ここまで)
(削除) An hCard, hCalendar event or textual description of the item being measured may be supplied. (削除ここまで)
(削除) <pre><p class="hmeasure"> (削除ここまで)
(削除) <span class="item vcard">The <span class="fn">Great Wall</span>of (削除ここまで)
(削除) <span class="adr"><span class="country-name">China</span></span></span> (削除ここまで)
(削除) is about <span class="value">6 700</span> <abbr title="km">kilometres</abbr> (削除ここまで)
(削除) <abbr title="length" class="type">long</abbr>. (削除ここまで)
(削除) The item is optional. (削除ここまで)
(削除) The type specifies the dimension being measured. A measurement in, say, metres may be ambiguous because it could refer to a depth, a height, a length or a width. The optional type parameter allows you to specify a human-readable dimension. (削除ここまで)
(削除) == Parsing Hints == (削除ここまで)
(削除) This section is ''informative''. Parsers should note that (with the exception of certain non-ascii characters, which can be converted manually first) all the units can be understood by the [http://www.gnu.org/software/units/ GNU units] program. A parser could act as a wrapper to a GNU units installation, or make use of a GNU units-based web service to convert between units. (削除ここまで)
== Related microformats ==
== Related microformats ==
* [[hcalendar]] can provide a complete quantitative description of a natural event (for example an earthquake) occurring at a specified time (dtstart/dtend) and location (embedded [[geo]]), by just embedding measured physical quantities in the 'descrition' span.
* [[hcalendar]] can provide a complete quantitative description of a natural event (for example an earthquake) occurring at a specified time (dtstart/dtend) and location (embedded [[geo]]), by just embedding measured physical quantities in the 'descrition' span.
* [[job-listing]] can use time measure for specify per what period of time the salary is for.
* [[job-listing]] can use time measure for specify per what period of time the salary is for.
* [[hlisting]] product dimensions; weight/mass; time period (as above).
* [[hlisting]] product dimensions; weight/mass; time period (as above)(追記) ; price (追記ここまで).
* [[directions-examples]] can use length measure for mileage and time to go from one point to the next.
* [[directions-examples]] can use length measure for mileage and time to go from one point to the next.
* [[recipe-examples]] can use weight, volume and time measure for ingredients and preparation time.
* [[recipe-examples]] can use weight, volume and time measure for ingredients and preparation time.
* [[currency]] can be viewed as a measurement unit, or as a component of a measurement unit, as in $ per hour.
* [[currency]] can be viewed as a measurement unit, or as a component of a measurement unit, as in $ per hour.
(削除) == Contributors == (削除ここまで)
(削除) * Guillaume Lebleu (削除ここまで)
(削除) * [[User:AndyMabbett|Andy Mabbett]] (削除ここまで)
(削除) * Luca Postpischl (削除ここまで)
(削除) * [[User:ManuSporny|Manu Sporny]] (削除ここまで)
==References==
==References==
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*[http://www.slideshare.net/dder/the-new-science-bangalore-edition the New e-Science] (SlideShare, David De Roure)
*[http://www.slideshare.net/dder/the-new-science-bangalore-edition the New e-Science] (SlideShare, David De Roure)
*[http://en.wikipedia.org/wiki/Template:Convert Wikipedia's "convert" template]
*[http://en.wikipedia.org/wiki/Template:Convert Wikipedia's "convert" template]
(追記) *[http://www.cs.tut.fi/~jkorpela/chars/si.html Jukka Korpela - Characters in SI notations] (追記ここまで)
==See also==
==See also==
{{measure-related-pages}}
{{measure-related-pages}}
Latest revision as of 16:28, 18 July 2020
This page is for researching and developing a measure microformat. Per the process:
The problem
Measures (e.g. weights, sizes, temperatures) occur frequently on the Web, they are constituted of a value a unit-measure and, in scientific and technical contexts, an experimental uncertainty. These 3 elements should be marked-up consistently across websites so that they can be easily identified and acted upon (export, compute, convert) in collaborative distributed applications.
Unit-measures differ from locale to locale (e.g. Fahrenheit vs. Celsius, pound versus Kilogram), making comparison and matching of offerings difficult.
The Measurement microformat will enable unambiguous description of physical quantities and thus provide a solid ground for data sharing and automation in many areas.
Next Steps
Related microformats
- hcalendar can provide a complete quantitative description of a natural event (for example an earthquake) occurring at a specified time (dtstart/dtend) and location (embedded geo), by just embedding measured physical quantities in the 'descrition' span.
- job-listing can use time measure for specify per what period of time the salary is for.
- hlisting product dimensions; weight/mass; time period (as above); price.
- directions-examples can use length measure for mileage and time to go from one point to the next.
- recipe-examples can use weight, volume and time measure for ingredients and preparation time.
- currency can be viewed as a measurement unit, or as a component of a measurement unit, as in $ per hour.
References
See also