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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Collaborative mapping</span></span>
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<p><b>Collaborative mapping</b>, also known as citizen mapping,<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> is the aggregation of <a href="Web_mapping" title="Web mapping">Web mapping</a> and <a href="User-generated_content" title="User-generated content">user-generated content</a>,<sup id="cite_ref-citizens_2-0" class="reference"><a href="#cite_note-citizens-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> from a group of individuals or entities, and can take several distinct forms. With the growth of technology for storing and sharing maps, collaborative maps have become competitors to commercial services, in the case of <a href="OpenStreetMap" title="OpenStreetMap">OpenStreetMap</a>, or components of them, as in <a href="Google_Map_Maker" title="Google Map Maker">Google Map Maker</a>, <a href="Waze" title="Waze">Waze</a> and <a href="Yandex_Map_Editor" class="mw-redirect" title="Yandex Map Editor">Yandex Map Editor</a>.
</p><p>Volunteers collect geographic information and the citizens/individuals can be regarded as sensors within a geographical environment that create, assemble, and disseminate geographic data provided voluntarily by the individuals.<sup id="cite_ref-citizens_2-1" class="reference"><a href="#cite_note-citizens-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Collaborative mapping is a special case of the larger phenomenon known as <a href="Crowd_sourcing" class="mw-redirect" title="Crowd sourcing">crowd sourcing</a>, that allows citizens to be part of collaborative approach to accomplish a goal. The goals in collaborative mapping have a geographical aspect, e.g. having a more active role in <a href="Urban_planning" title="Urban planning">urban planning</a>. Especially when data, information, knowledge is distributed in a population and an aggregation of data is not available, then collaborative mapping can bring a benefit for the citizens or activities in a community with an e-Planing Platform.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Extensions of critical and participatory approaches to <a href="Geographic_information_systems" class="mw-redirect" title="Geographic information systems">geographic information systems</a> combines software tools with a joint activities to accomplish a community goal.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Additionally, the aggregated data can be used for a <a href="Location-based_service" title="Location-based service">Location-based service</a> like available public transport options at the geolocation where a mobile device is currently used (<a href="Global_Positioning_System" title="Global Positioning System">GPS-sensor</a>). The relevance for the user at a specific geolocation cannot be represented with logic value in general (relevant=true/false). The relevance can be represented with Fuzzy-Logic or a <a href="Fuzzy_architectural_spatial_analysis" title="Fuzzy architectural spatial analysis">Fuzzy architectural spatial analysis</a>.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Types">Types</h2></div>
<p>Collaborative mapping applications vary depending on which feature the collaborative edition takes place: on the map itself (shared surface), or on overlays to the map. A very simple collaborative mapping application would just plot users' locations (social mapping or <a href="Geosocial_networking" title="Geosocial networking">geosocial networking</a>) or Wikipedia articles' locations (Placeopedia). Collaborative implies the possibility of edition by several distinct individuals so the term would tend to exclude applications where the maps are not meant for the general user to modify.
</p><p>In this kind of application, the map itself is created collaboratively by sharing a common surface. For example, both <a href="OpenStreetMap" title="OpenStreetMap">OpenStreetMap</a> and <a href="WikiMapia" class="mw-redirect" title="WikiMapia">WikiMapia</a> allow for the creation of single 'points of interest', as well as linear features and areas. Collaborative mapping and specifically surface sharing faces the same problems as <a href="Revision_control" class="mw-redirect" title="Revision control">revision control</a>, namely concurrent access issues and versioning. In addition to these problems, collaborative maps must deal with the difficult issue of cluttering, due to the geometric constraints inherent in the media. One approach to this problem is using overlays, allowing to suitable use in consumer services.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Despite these issues, collaborative mapping platforms such as OpenStreetMap can be considered as being as trustworthy as professionally produced maps<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p><p>Overlays group together items on a map, allowing the user of the map to toggle the overlay's visibility and thus all items contained in the overlay. The application uses map tiles from a third-party (for example one of the mapping <a href="API" title="API">APIs</a>) and adds its own collaboratively edited overlays to them, sometimes in a <a href="Wiki" title="Wiki">wiki</a> fashion. If each user's revisions are contained in an overlay, the issue of revision control and cluttering can be mitigated. One example of this is the accessibility platform Accessadvisr, which utilises collaborative mapping to inform persons of accessibility issues,<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> which is perceived to be as reliable and trustworthy as professional information.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>
</p><p>Other overlays-based collaborative mapping tools follow a different approach and focus on user centered content creation and experience. There users enrich maps with their own points of interest and build kind of <a href="Travel_book" class="mw-redirect" title="Travel book">travel books</a> for themselves. At the same time users can explore overlays of other users as collaborative extension.
</p>
<div class="mw-heading mw-heading2"><h2 id="Humanitarian_collaborative_mapping">Humanitarian collaborative mapping</h2></div>
<p><a href="Humanitarian_OpenStreetMap_Team" class="mw-redirect" title="Humanitarian OpenStreetMap Team">Humanitarian OpenStreetMap Team</a>,<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> based on <a href="OpenStreetMap" title="OpenStreetMap">OpenStreetMap</a>,<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> provides collaborative mapping support for humanitarian objectives, e.g. collaborative transportation map,<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> epidemiological mapping for Malaria,<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> earthquake response,<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> or typhoon response.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Collaborative_robotic_mapping">Collaborative robotic mapping</h2></div>
<p>In <a href="Robot_navigation" title="Robot navigation">robot navigation</a>, 3-dimensional maps can be reconstructed collaboratively using <a href="Simultaneous_localization_and_mapping" title="Simultaneous localization and mapping">simultaneous localization and mapping</a>.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Private_local_collaboration_using_maps">Private local collaboration using maps</h2></div>
<p>Some mapping companies offer an online mapping tool that allows private collaboration between users when mapping sensitive data on digital maps, e.g.:
</p>
<ul><li>Google Maps<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup></li>
<li>Wegovnow: a map based platform to engage the local civic society<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> – local collaboration &amp; publishing with maps<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup></li>
<li>Canvis.app - a platform that allows you to easily generate, customize, and share a collaborative mapping campaign. Suitable for large scale crowdsourcing projects.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup></li>
<li>Murmurations provides a collaborative mapping framework which leverages the collective effort of multiple mappers to produce customisable maps and directories from decentralised, interoperable Profiles.</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Quality_assurance">Quality assurance</h2></div>
<p>If citizens or a community collects data, information (like Wikipedia, <a href="Wikiversity" title="Wikiversity">Wikiversity</a>) then concerns come up about <a href="Data_quality" title="Data quality">data quality</a>, and specifically about its <a href="Credibility" title="Credibility">credibility</a>. The same aspects of <a href="Quality_assurance" title="Quality assurance">quality assurance</a> are relevant for collaborative mapping<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> and the possibility of <a href="Vandalism" title="Vandalism">vandalism</a>.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Data_collection_tools">Data collection tools</h2></div>
<p>Collaborative mapping is not restricted to the application of mobile devices but if data is captured with a mobile device the <a href="Satellite_navigation" title="Satellite navigation">satellite navigation</a> (like <a href="Global_Positioning_System" title="Global Positioning System">GPS</a> is helpful to assign the current geolocation to the collected data at the geolocation. Open Source tools like <a href="ODK_(software)" title="ODK (software)">ODK</a> are used to collect the mapping data (e.g. about health care facilities or humanitarian operations) with a survey that could automatically insert the geolocation into the survey data that could include visual information (e.g. images, videos) and audio samples collected at the current geolocation. An image can be used e.g. as additional information of damage assessment after an earth quake.<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Restricted_visibility_of_alterations">Restricted visibility of alterations</h3></div>
<p>These sites provide general base map information and allow users to create their own content by marking locations where various events occurred or certain features exist, but aren’t already shown on the base map.
Some examples include 311-style request systems<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> and 3D spatial technology.<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading3"><h3 id="Public_alterations_and_quality_assured_versions">Public alterations and quality assured versions</h3></div>
<p>The openness for changes to the community is possible for all individuals and the community is validating changes by putting regions and location at their personal watchlist. Any changes in the joint repository of the mapping process are captured by a <a href="Version_control" title="Version control">version control system</a>- Reverting changes is possible and specific quality assured versions of specific areas can be marked as reference map for a specific area (like permanent links in Wikipedia). Quality assurance can be implemented on different scales:
</p>
<ul><li>version of complete map,</li>
<li>version of selected regions/area,</li>
<li>version of mapping attributes a <a href="Point_of_Interest" class="mw-redirect" title="Point of Interest">Point of Interest</a> (e.g. hospital marked as "under construction" is providing health care services)</li></ul>
<p><a href="Blockchain" title="Blockchain">Blockchain</a> can be used as integrity check of alterations<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> or <a href="Digital_signature" title="Digital signature">digital signature</a><sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> can be used to mark a certain version as "quality assured" by the institution that signed a map as digital file or digital content.
</p>
<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
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<ul><li>Category:Collaborative mapping</li>
<li>Category:Virtual globes</li>
<li>Category:Web mapping</li>
<li><a href="Cadastral_map" class="mw-redirect" title="Cadastral map">Online cadastral map</a></li>
<li><a href="Comparison_of_commercial_GPS_software" class="mw-redirect" title="Comparison of commercial GPS software">Comparison of commercial GPS software</a></li>
<li><a href="Comparison_of_web_map_services" title="Comparison of web map services">Comparison of web map services</a></li>
<li><a href="Counter-mapping" title="Counter-mapping">Counter-mapping</a></li>
<li><a href="List_of_wikis" title="List of wikis">List of wikis</a></li>
<li><a href="Neogeography" title="Neogeography">Neogeography</a></li>
<li><a href="Participatory_3D_modelling" title="Participatory 3D modelling">Participatory 3D modelling</a></li>
<li><a href="Participatory_GIS" title="Participatory GIS">Participatory GIS</a></li>
<li><a href="Public_participation_GIS" class="mw-redirect" title="Public participation GIS">Public participation GIS</a></li>
<li><a href="Virtual_globe" title="Virtual globe">Virtual globe</a></li>
<li><a href="Volunteered_geographic_information" title="Volunteered geographic information">Volunteered geographic information</a></li>
<li><a href="Humanitarian_OpenStreetMap_Team" class="mw-redirect" title="Humanitarian OpenStreetMap Team">Humanitarian OpenStreetMap Team</a></li>
<li><a href="https://en.wikiversity.org/wiki/Collaborative_mapping" class="extiw external" title="wikiversity:Collaborative mapping">Wikiversity:Collaborative mapping</a></li>
<li><a href="https://en.wikiversity.org/wiki/Public-Private-Versioning" class="extiw external" title="wikiversity:Public-Private-Versioning">Wikiversity:Public-Private-Versioning</a> for mapping products</li></ul>
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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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