weeklyOSM 594


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Impact of UN Mappers – IIEP UNESCO & Madagascar Ministry of Education’s mapping campaign [1] | © IIEP UNESCO & Madagascar Ministry of Education | map data © OpenStreetMap contributors

Breaking news

  • At the OSMF general meeting on 12 December, chair, Allan Mustard announced the results of the election to the board. Guillaume Rischard, Amanda McCann, and Mikel Maron were re-elected. Roland Olbricht joins them as a new member. 742 ballots were cast. The detailed results are available.

Mapping campaigns

  • [1] The UN Mappers – IIEP UNESCO mapping campaign, in collaboration with the Ministry of Education in Madagascar, brought together almost 900 volunteers to advance education planning: 9845 km of roads were mapped around the Vakinankaratra region in Madagascar. 97% of schools are now connected to road network data, compared to just over half at the beginning of the project. The road network produced is processed using the IIIEP-UNESCO school catchment plugin to assess travel times children undertake every day from home to school, and to design better interventions.


  • darkonus gave instructions explaining how to install JOSM on a Mac with Apple Silicon.
  • Forteller shared the adventure of surveying by bike and then mapping more than 100 parks in Oslo, which led to an opportunity to discover new places.
  • Requests have been made for comments on the following proposals:
    • amenity=library_dropoff for mapping a place where library patrons can return or drop-off books, other than the library itself.
    • ele=* to allow the use of any of the documented height units for tagging elevations.


  • OpenMapChile reported on their progress on the mapping of urban trees, specifically in the city of Valdivia, where they have achieved a total of 15,062 trees added.
  • OpenStreetMap Belgium’s Mapper of the Month for December is d1sr4n from Russia.
  • TechnicallyNotDeaf, a beginner contributor from Victoria, Australia, outlined what they have learnt from their first week of mapping.
  • User pedr0faria was the winner of the second edition of the UN Map Marathon, the event organised by UN Mappers to contribute to UN projects through mapping in OpenStreetMap.

OpenStreetMap Foundation

  • Michael Spreng, on behalf of the Membership Working Group, indicated that during the election season, which often leads to huge volumes of messages, contributors are limited to one message a day on talk-osmf.

OSM research

  • A scientific article discussed (fr) > en the contribution of cartography to the real and the virtual, including the case of mapathons that make it possible to make real the presence of people missing from maps other than OSM.


  • Yves noted having added the remaining missing functionality of the OpenSnowMap website to the mobile-friendly version, it’s time to de-commission the older version. In case you feel lost, you can still find the old version (at least for a while) from the menu option ‘LEGACY OPENSNOWMAP.ORG’

Open Data

  • Michael Cieslik demonstrated how open elevation profile data can be used to compare buildings heights with LOD2 style 3D renderings of OSM data. The discussion in Michael’s tweet (de) focuses on the differences in the datasets and potential means of synchronisation.


  • While discussing the topic of software governance Roland Olbricht pointed out that the Overpass API has a low bus factor. mmd added (de) > en that the existence of their fork doesn’t necessarily increase the bus factor and things other than the number of developers can help a project survive in the long term.
  • The development team behind the OSM Welcome Tool recently wrote instructions on how to use the tool (available on the tool’s wiki page) and are looking for feedback from new users.
  • Robhubi explained (de) > en the workflow they use to import data from GIP to compare with OSM. The Graph Integration Platform (GIP) is Austria’s online system for collecting and sharing transport route information.
  • The Russian internet company VK (the russian Facebook ex-MailRu Group) has deployed an overpass turbo website. They have also published (ru) > en a tutorial on how to use it.

Other “geo” things

  • Anonymaps informed us of an exciting opportunity to work for Google in return for no pay.
  • The Bucharest court confirmed [ro] > en the decision of a chief prosecutor of DIICOT (Direcţia de Investigare a Infracţiunilor de Criminalitate Organizată şi Terorism) to reopen the criminal investigation in a case in which the Romanian Patriarchate filed a criminal complaint after the location and name of the ‘Cathedral of the Salvation of the Nation‘ on Google Maps was changed to the ‘Cathedral of the Stupidity of the Nation’.
  • The Department of Geoinformatics at Heidelberg University is seeking (de) a part-time research assistant (m, f, d) as soon as possible to develop methods for generating spatially high-resolution CO2 emission inventories using methods from Spatial Data Science and Machine Learning (esp. Deep Learning) in the context of the GeCO project.
  • Google Mexico has proposed a crowdsourced project for mapping all sorts of street stalls, which account for 50% of the businesses in the country. These businesses are not visible on the map, and Google Mexico took notice of the situation from custom maps prepared by a freelance data analyst.

Upcoming Events

Where What Online When Country
建设街道 长株潭区域作业绘图后续修正 osmcalpic 2021-12-10 – 2021-12-15 flag
Grenoble OSM Grenoble Atelier OpenStreetMap osmcalpic 2021-12-13 flag
臺北市 OSM x Wikidata Taipei #35 osmcalpic 2021-12-13 flag
OSMF Engineering Working Group meeting osmcalpic 2021-12-13
Toronto OpenStreetMap Enthusiasts Meeting osmcalpic 2021-12-14
Washington MappingDC Mappy Hour osmcalpic 2021-12-15 flag
20095 Hamburger Mappertreffen osmcalpic 2021-12-14 flag
Derby East Midlands OSM Pub Meet-up : Derby osmcalpic 2021-12-14 flag
Reunión mensual de la comunidad española osmcalpic 2021-12-14
Decatur County OSM US Mappy Hour osmcalpic 2021-12-16 flag
京都市 幕末京都オープンデータソン#15:岩倉具視と岩倉村 osmcalpic 2021-12-18 flag
Lyon Rencontre mensuelle Lyon osmcalpic 2021-12-21 flag
Bonn 146. Treffen des OSM-Stammtisches Bonn osmcalpic 2021-12-21 flag
Lüneburg Lüneburger Mappertreffen (online) osmcalpic 2021-12-21 flag
京都市 京都!街歩き!マッピングパーティ:第28回 智積院 osmcalpic 2021-12-25 flag
Bremen Bremer Mappertreffen (Online) osmcalpic 2021-12-27 flag
Düsseldorf Düsseldorfer OSM-Treffen (online) osmcalpic 2021-12-29 flag

If you like to see your event here, please put it into the OSM calendar. Only data which is there, will appear in weeklyOSM.

This weeklyOSM was produced by PierZen, SK53, TheSwavu, cafeconleche, derFred, Can.