Geo (microformat): Difference between revisions
Artoria2e5 (talk | contribs) →Extensions: remove. very much not active |
Artoria2e5 (talk | contribs) |
||
| Line 15: | Line 15: | ||
*The same number of decimal places should be used in each value, including trailing zeroes.<ref group="note">''Must'' and ''should'' are used per the [[Internet Engineering Task Force|IETF]] document {{IETF RFC|2119}}</ref> |
*The same number of decimal places should be used in each value, including trailing zeroes.<ref group="note">''Must'' and ''should'' are used per the [[Internet Engineering Task Force|IETF]] document {{IETF RFC|2119}}</ref> |
||
The |
The hGeo microformat is applied using three [[HTML#Attributes|HTML classes]]. For example, the marked-up text: |
||
<syntaxhighlight lang="html"> |
<syntaxhighlight lang="html"> |
||
Revision as of 06:16, 8 March 2021
 | This article needs additional citations for verification. (August 2010) |
Geo is a microformat used for marking up WGS84 geographical coordinates (latitude;longitude) in (X)HTML.[1] Although termed a "draft" specification, this is a formality, and the format is stable and in widespread use;[2] not least as a sub-set of the published hCalendar[3] and hCard[4] microformat specifications, neither of which is still a draft.[3][4]
Use of Geo allows parsing tools (for example other websites, or Firefox's Operator extension) to extract the locations, and display them using some other website or mapping tool, or to load them into a GPS device, index or aggregate them, or convert them into an alternative format.
Usage
The below describes the new version of the geo microformat, h-geo.
- All properties are optional.[5]
- The same number of decimal places should be used in each value, including trailing zeroes.[note 1]
The hGeo microformat is applied using three HTML classes. For example, the marked-up text:
<div>Belvide: 52.686; -2.193; 120</div>
becomes:
<div class="h-geo">Belvide: <span class="p-latitude">52.686</span>; <span class="p-longitude">-2.193</span>; <span class="p-altitude">120</span></div>
by adding the class-attribute values "h-geo", "p-latitude", "p-longitude", and "p-altitude".
This will display
Belvide: 52.686; -2.193; 120
and a geo microformat for that location, Belvide Reservoir, which will be detected, on this page, by microformat parsing tools.
Legacy Geo
The legacy microformat uses the class-attribute values "geo", "latitude" and "longitude". There is no support for altitude. The legacy and modern attribute formats can coexist.
hCard
Each Geo microformat may be wrapped in an hCard microformat, allowing for the inclusion of personal, organisational or venue names, postal addresses, telephone contacts, URLs, pictures, etc.
Users
Organisations and websites using Geo include:
- Flickr - on over three million photo pages
- Geograph - on over one million photo pages
- Google[6]
- Multimap - all map pages
- OpenStreetMap - wiki pages about places, GPS traces and diary entries
- Wikipedia - embedded in geo templates of map-link pages
- German Wikipedia - ditto
- Dutch Wikipedia - ditto
- Swedish Wikipedia - ditto
- Italian Wikipedia
- Wikivoyage
Many[which?] of the organisations publishing hCard include a geo as part of that.
See also
- GeoSPARQL, Geographic Information System (GIS) data for the W3C Semantic Web using the Resource Description Framework (RDF) and SPARQL
- Geo URI specified in RFC 5870
- ISO 6709
- ICBM address, an older geotagging format
- Schema.org, web standard schema.org/geo.
Notes
References
- ^ "Geo Spec". microformats community. Retrieved 17 August 2010.
- ^ "Extending HTML5 — Microformats". HTML5 Doctor. Retrieved 19 August 2010.
- ^ a b "hCalendar 1.0 Spec". Microformats community. Retrieved 17 August 2010.
- ^ a b "hCard 1.0 Spec". Microformats Community. Retrieved 17 August 2010.
- ^ "h-geo - Microformats Wiki". microformats.org.
- ^ "Microformats in Google Maps". Retrieved 30 April 2016.
External links
- Geo spec with notes and examples
- Geo cheat-sheet a quick reference