Contents 1 Related WikiProjects 2 Associated Portals 3 Participants 4 Goals 5 Usage guidelines 5.1 Which coordinates to use 6 Markup 6.1 Marking project-related pages on Talk page 7 Implementation details 7.1 Coordinate templates 7.1.1 Parameters 7.1.1.1 type:T 7.1.1.2 dim:D 7.1.1.3 scale:N 7.1.1.4 region:R 7.1.1.5 globe:G 7.1.1.6 source:S 7.1.2 Name 7.1.3 Display preferences 7.1.4 Format 7.1.5 Creating new templates 7.2 Linear features 7.3 How to obtain geographical coordinates 7.4 Geodetic system 7.5 Precision guidelines 7.5.1 Precision tables 7.5.2 Mathematical formulas 7.6 Coordinates from other language versions (iwcoor) 8 To do list 8.1 Find coordinates for 8.2 Tag articles needing coordinates 8.3 Fix 8.4 More 9 Tools and applications based on coordinates from Wikipedia 9.1 NASA World Wind Samples 9.2 View Wikipedia in Google Earth 9.3 Visualization of Wikipedia articles with Google Maps 9.4 WikiMiniAtlas JavaScript plugin 9.5 All geodata in SQL file format 9.6 Export multiple coordinates 9.6.1 Coordinates search tool 9.7 WikiProject Geographical coordinates categories 9.8 World map displaying the concentration of wikipoints 10 See also 11 External links

Related WikiProjects WikiProject Council includes this WikiProject in its Geographical directory. This WikiProject is an offshoot of WikiProject Maps: WikiProject Geography WikiProject Maps WikiProject Geographical coordinates ...and is the parent project of: Wikipedia-World Other WikiProjects that make use of geographical coordinates include: Meta:Category:Wikimaps WikiProject Cities WikiProject Countries WikiProject Glaciers WikiProject Lakes WikiProject Microformats Geo WikiProject Mountains WikiProject OpenStreetMap WikiProject Protected areas WikiProject Rivers WikiProject U.S. counties WikiProject United States

Associated Portals The AtlasPortal is associated with WikiProject Geography. The Geography Portal is associated with WikiProject Geography.

Participants This list has been moved to its own page.

Goals Should provide a uniform markup for all geographic coordinates Should provide a user-preferred appearance for all geographic coordinates Markup should be easy and natural to use Should be able to have a uniform, extensible way of accessing all types of map resources, avoiding having direct external links to maps in articles Clicking on a reference navigates directly to a page with external pointers to various resources, with coordinates automatically embedded where possible. The resources can be maps of various kinds, topological charts, satellite photos and others. Create a database of points, enabling generation of navigatable maps with a clickable icon appearing for every location for which there is a Wikipedia article. This has been implemented for NASA World Wind, Google Earth (see below) and Google maps (see below). Serve as a tool for finding Wikipedia articles describing nearby locations. See also meta:Wikipediatlas. Adhere to existing Internet standards for geographic coordinates as far as possible

Usage guidelines This page is an essay on style. It contains the advice and/or opinions of one or more WikiProjects on how to format and present article content within their area of interest. This WikiProject advice page is not a formal Wikipedia policy or guideline, as it has not been thoroughly vetted by the community. See also MOS:COORDS In general, coordinates should be added to any article about a location, structure, or geographic feature that is more or less fixed in one place. Such items can vary in size from a single tree (or smaller) to entire oceans or continents. Coordinates should also be added to articles about events that are associated with a single location, for example, the Ufa train disaster. Guidelines for less obvious situations are given below. Coordinates are appropriate for the top articles or within infoboxes of the following types of articles: Businesses/organizations with a single location (even if they are defunct) Demolished buildings/structures Buildings/structures that have been proposed, but not yet built (if there is a reliable source for the location) Permanently docked ships (and shipwrecks) Do not add coordinates to the following types of articles: Biographies of living people Works of art (other than permanent outdoor statues, installations or murals) Sports teams (add to the stadium article instead) Businesses with multiple locations (although listing coords for individual locations in a table may be appropriate) Ships that are not permanently docked or sunk Other types of articles may be decided on a case-by-case basis. Which coordinates to use National mapping agencies such as the Geographic Names Information System (GNIS), Ordnance Survey (OS), and Geographical Names Board of Canada (GNBC) are usually reliable sources for coordinates. The GEOnet Names Server (GNS) database is not reliable. Always double check the coordinates on an internet mapping service. For other locations, the following points should be considered: For villages, towns, communities, etc., use the current centre. Where this is difficult, choose the earliest known settlement of that name. For military and industrial establishments (e.g., castles, barracks, dockyards, car plants) use the main gate. For administrative districts, use the head office. For geographical features with an area, such as lakes, reservoirs, and islands, use a point reasonably in the center of the feature. (Remember not to specify too much precision; see Precision guidelines below.) For linear features, see Wikipedia:WikiProject Geographical coordinates/Linear.

Markup The practical usage of coordinate markup in Wikipedia is described in the style guide for geographical coordinates. For use on maps and other services, parameters may also be required. A complete entry could for example be: {{coord|51|28|40|N|0|0|6|W|type:landmark_scale:2000_region:GB|display=title}} See also: Obtaining coordinates Marking project-related pages on Talk page The template {{WikiProject Geographical coordinates}} may be added to relevant Talk pages. This adds the page to several categories and displays as: WikiProject Geographical coordinates Geographical coordinatesWikipedia:WikiProject Geographical coordinatesTemplate:WikiProject Geographical coordinatesGeographical coordinates articles v t e WikiProject Geographical coordinates is of interest to WikiProject Geographical coordinates, which encourages the use of geographical coordinates in Wikipedia. If you would like to participate, please visit the project page, where you can join the project and see a list of open tasks.

To do list edit · history · watch · refresh  To-do list for Wikipedia:WikiProject Geographical coordinates: Find coordinates for Category:Articles needing coordinates Category:Articles missing geocoordinate data by country Category:Articles missing geocoordinate data by subject Observatories Concentration camps needing coordinates Use Maybe-Checker: verify and/or add coordinates to articles in categories likely to need coordinates. Articles are also listed on WolterBot's cleanup listings (User:WolterBot/Cleanup statistics) See also: Wikipedia:Obtaining geographic coordinates Tag articles needing coordinates {{coord missing|country name}} is added to articles needing coordinates. This makes them available for the previous step. Fix As of March 16, 2018 23:55 (UTC) Refresh User reported errors: ► Articles requiring geodata verification no pages or subcategories 0 pages ► Pages requiring geodata verification no pages or subcategories 0 pages ► Talk pages requiring geodata verification no pages or subcategories 0 pages Formatting errors: ► Coordinates templates needing maintenance no pages or subcategories 0 pages ► Coord template needing repair no pages or subcategories 0 pages Category:Pages with malformed coordinate tags coord-enwiki.log (updated daily) Coordinate check tallies (config) Check coord templates among the 34 pages in Category:ParserFunction errors Coordinates around 0°,0° in article namespace Replace links in articles to: MapQuest, Live Maps, MSN, Maplandia (spammy), Encarta (1), Encarta (2), MSR / Terraserver-USA, TopoQuest, Yahoo! Maps, Google Local, UK Google Maps, and Google Maps More Provide advice on the use of {{Attached KML}} on the WP:GEO page. KML means Keyhole Markup Language, using XML Make better examples, also showing use of decimals and scale. Add an attribute for other planets and the moon and probably also star maps. Extend NASA World Wind support to include layers (by type) and labels. Rewrite the article Geographic coordinate system linked from many coordinates. Related articles: latitude, longitude. Convert existing data to templates Identify special formats not yet converted, e.g. E12 23 54 N23 34 52 Clean up / reduce redundancy in U.S. city articles (rambot/smackbot generated), see past discussion Suggestions for extensions at mw:Summer of Code 2009#MediaWiki core and new extensions Discuss, summarise and specify a set of changes to geohack, such as type list revision, support for linear features, bug fixes, &c

Tools and applications based on coordinates from Wikipedia Articles (and coordinates) can be found through the pages using the templates in Category:Coordinates templates All coordinates are available for download in Wikipedia database dumps. To get the coordinates from the XML format dump of all articles (enwiki-latest-pages-articles.xml.bz2, 4 GB), the dump needs to be parsed for pages containing coordinates in the entry formats listed above. Most articles in Wikipedia conform to these formats and coordinates are easy to parse from the wikitext with regular expressions for simple character sequences. As all coordinates link to the same PHP tool, they may also be found from the SQL format table of external links (enwiki-latest-externallinks.sql.gz, 725MB). This second method will however not include all available information about the coordinates, such as their position between the article body and the title area. There may exist some groups of articles that generate the coordinate data dynamically and are not in any of the standard entry formats, as some editors may have wished to facilitate entry of common coordinate related information, while only keeping the output similar with the existing templates. To get all such coordinates, all the articles in the database dump need to be run through a wikitext parser (such as the PHP one in MediaWiki) to expand all the templates, and the result parsed for coordinates. Alternatively, it is also possible to download the HTML generated from all the article and expanded template content (wikipedia-en-html.tar.7z, 14 GB). Note that mass downloading individual pages from the live Wikipedia site is strongly discouraged and may lead to discontinued access. NASA World Wind Samples All examples use NASA World Wind, with the Wikipedia overlay. This is purely meant as an example of using a coordinated concept for geographical coordinates. Links to Wikipedia articles are represented by yellow rings, such as in this view of the Washington DC National Mall, using USGS aerial photos This view of San Francisco is done using Landsat 7 satellite images. Again, note the rings that indicate Wikipedia articles Combine radar topographic (Shuttle Radar Topography Mission) data with Landsat-7 images for full 3D visualization, as in this image of Mount Baker. Upper ring is for the Space Needle. Note also that vertical exaggeration is enabled. View Wikipedia in Google Earth Project Wikipedia-World scan 11 Dumps (ca,cs,de,en,eo,es,fi,fr,nl,pt,ru) and provides: dynamic Google-Earth layers in 21 languages. For instance: english Layer, español Layer static Google-Earth layers in 10 language with different folders (Castles, Parks,...), Download at webkuehn.de SQL-Data of all scanned coordinates Visualization of Wikipedia articles with Google Maps www.geonames.org over 800,000 Wikipedia articles in 230 languages on Google maps. The placemarks include short descriptions of the displayed items, extracted from the Wikipedia articles. Webservices for full text search and reverse geocoding of Wikipedia articles. WikiMiniAtlas JavaScript plugin WikiMiniAtlas displaying the KML data attached to the Bridgwater and Taunton Canal article (blue line) and the Coordinate points from the article (blue dots). WikiMiniAtlas is a JavaScript to add to your monobook.js. It adds a draggable and zoomable (just like GoogleMaps) map to all geo-coded articles. Clickable labels with links to other geocoded articles are placed on the map to allow spatial browsing of Wikipedia. Map layers include satellite images (using Landsat7 data) with zoomlevels down to a resolution <100m, and daily updated MODIS satellite data. WikiMiniAtlas is currently enabled on Wikipedia (by clicking on the globe () beside the coordinates). All geodata in SQL file format Project Wikipedia-World, provides the complete database for download in SQL-file format. Export multiple coordinates Kmlexport tool: Pages marked with multiple coordinates or categories of articles with coordinates can be exported as KML (for use in Google Earth, for example). This tool and some alternatives can be found on clicking the coordinates or by applying the {{GeoGroup}} template on a page. The Kmlexport can be used directly or through Google Maps; see for example Colmar Pocket or Category:Capitals in Europe. Export from articles is real-time, export from categories is based on stored extractions (may be several weeks old). KML may be converted in other formats, suitable as Points of Interest (POI) for GPS systems. Other sources: Wikitude provides coordinates as KML or TomTom POI format. Coordinates search tool tools:~dispenser/cgi-bin/geosearch.py allows for regular expression searching on the GeoHack links in the external links table. This has the advantages of near real time information and powerful pattern matching. The following are some example queries created as a demonstration of the flexibility of the system. edit Sample searches Description MySQL Regular expression query Coordinates imported from the CSWiki source:cswiki Settlements whose populations are under 1,000 type:city$$[0-9]{0,3}$$ South of the Antarctic Circle (approximate) =(66_[3-9]|66.[6-9]|6[7-9]|[7-9][0-9])[0-9_.]*_S_ Coordinates equivalent to 0°N 0°E﻿ / ﻿0°N 0°E﻿ / 0; 0 =[-_0.]+[NS][-_0.]+[EW] Coordinates in San Marino region:SM Coordinates on Callisto globe:[Cc]allisto To switch to other wikis, the site parameter can be added to the URL, e.g. &site=commons for Commons &site=pt for Portuguese Wikipedia Searches to find problems Problem description Python regular expression Excess precision (6 or more decimal places) [.][0-9]{6} Excess precision (5 decimal places) [.][0-9]{5}[^0-9] Coordinates lacking metadata (no type or region) _[WE]_+($|&title=|\{+[0-9]\}+) Unexpected character in parameter name params=[^&=]*?[^_a-z][a-z]*: Unsupported parameter elevation: params=[^&=]+?elevation: Unsupported parameter other than elevation: params=[^&=]+?([^emn]|cation|me|om): Malformed region code params=[^&=]+?region:([^A-Z]|[A-Z]([^A-Z]|[A-Z][^_&-]|[A-Z]-[^0-9A-Z])) Unassigned top-level region code region:(A[ABCHJKPVY]|B[CKPX]|C[BEJPQT]|D[^EJKMOZ]|E[ABDI-LUW]|F[A-HLNPQS-Z]|G[CJKOVXZ]|H[A-JLOPQSV-Z]|I[A-CF-KPU-Z]|J[^EMOP]|K[A-DFJ-LOQS-VX]|L[D-HJL-QWXZ]|M[BIJ]|N[BDHJKMNQSV-Y]|O[^M]|P[B-DIJOPQUVXZ]|Q[^A]|R[^EOSUW]|S[PQUW]|T[ABEIPQSUXY]|U[^AGMSYZ]|W[^FS]|X[^AINPSZ]|Y[^ET]|Z[^AMW]) Unexpected character in dim or scale or typesize (dim:[0-9.]*([^0-9.k_&]|k[^m]))|(scale:[0-9]*[^0-9_&])|(city[(][0-9,]*[^0-9,)]) Incomplete parameter params=[^&=]*?(dim|globe|region|scale|source|type):?(&|_|$) Invalid type type:(?!(adm(1st|2nd|3rd)|airport|city|country|edu|event|forest|glacier|isle|landmark|mountain|pass|railwaystation|river|satellite|waterbody)(\$|[&_()])) City without type: params=[^&=]*?[^:]city College with type: other than edu [Cc]ollege[&].*?type:(?!edu) School with type: other than edu [Ss]chool[&].*?type:(?!edu) University with type: other than edu [Uu]niversity[&].*?type:(?!edu) United States broadcaster with type: other than landmark [^(][KW][A-Z][A-Z][A-Z].*?params=.*?type:(?!landmark) Station with type: other than railwaystation ailway_[Ss]tation.*?type:(?!railwaystation) Typesize provided for type other than city type:(?!city)[^&=_]*[(] Unusual URL formatting geohack.php[?](?!pagename=)|&language= Tallies WikiProject Geographical coordinates categories ▼ WikiProject Geographical coordinates ► Articles missing geocoordinate data by country ► Articles missing geocoordinate data by sea or ocean ► Articles missing geocoordinate data by subject ► Articles needing coordinates ► Articles requiring geodata verification ► Articles with unknown geocoordinates ► Coord template needing repair ► Coordinates needed ► Coordinates templates needing maintenance ► Pages requiring geodata verification ► Talk pages requiring geodata verification ► WikiProject Geographical coordinates participants ► Coordinates templates ► WikiProject Geographical coordinates templates World map displaying the concentration of wikipoints Wikipedia-World allows generating such maps (see here)