weeklyOSM 423

21/08/2018-27/08/2018

Pic

Map of extremal peaks [1] | © gsa |
Leaflet | Map data © OpenStreetMap contributors, SRTM | Imagery © OpenTopoMap (CC-BY-SA)

Mapping

  • Frederik Ramm has published a code snippet on the dev mailing list, which he used to search for the way with the most relation memberships. The most curious and abstruse discoveries are mentioned in the follow-up messages.
  • The question “How to tag an address that has no housenumber?” has been raised on the Talk mailing list. The ensuing thread is an object lesson in the difference between the theory of an address being a unique identifier and the reality out there.
  • Jyri-Petteri Paloposki wrote on the Tagging mailing list that the tagging proposal for winter_service, that was originally developed by malenki, has been put up for voting.
  • The deletion of trekking sites (legal wild camping) in the northern Black Forest had the unwanted side effect of triggering a discussion about keeping them secret on the German OSM forum (de) (automatic translation). Normally you only get the specific location of the sites after making a reservation and paying a small fee. The idea behind this is to protect the sites from abuse and vandalism, which could eventually lead to their abolition.

Community

  • Displeasure about the quality of Facebook imports and their collaboration with the community grows. Two of the most active mappers in Thailand are about to throw in the towel and stop mapping.
  • Printed hiking maps were previously often primarily published by state surveying authorities using their own, official, data. A hiking blog shares (de) (automatic translation) their positive experience with a printed hiking map based on OSM which replaces the out-of-print map from the state survey.
  • aHaSaN wrote a post in his user diary about the initiative of government institutions and civil society organisations in Bangladesh to use participatory OSM mapping for improving the capacity of communities in climate vulnerable areas as part of the LoGIC (Local Government Initiative for Climate Change) initiative.
  • User gsa created a map which shows all mountain peaks with a special property. Standing on a summit and looking around horizontally, most of the time one observes a higher mountain. On some peaks, however, which he called “extremal” peaks, this is not the case: If you stand on the top, you are looking down on every surrounding point. The computation of these “extremal” points from the OSM “natural=peak” (and “natural=volcano”) data was performed with GNU Octave. The code is available on Gitlab.
  • Christoph Hormann sees a need for OSM to have its own system for project organisation and related communication, task and issue tracking. He sees the widespread use of GitHub repositories to track a host of OSM-related activities, both by OSMF and related parties, as a clear signal that issue tracking is important within the OSM community. Because GitHub’s orientation is towards software development it can be an unfamiliar environment for many OSM contributors. In addition there may be issues of principle, due to GitHub’s commercial status, for others. He therefore suggests setting up our own self-hosted open source solution.
  • Martijn van Exel has recently introduced a new tool called meet your mapper, which lets you find mappers in a particular area. Now he has improved the tool based on user feedback. The main change, described in his user diary, is the addition of rectangular bounding boxes to select an area. These supplement the previous use of OSM relations. Other new options include: an alternative Overpass API server and a local quantitative assessment of the mappers in the area, similar to Pascal Neis’ How Did You Contribute.
  • Pierre Béland published a new blogpost on OpenDataDRC (an initiative from OSM-DRC and Potentiel 3.0) and he proposes quality indicators and map visualisations to identify irregular geometries and overlaps of buildings to help OSM communities assess and correct quality problems for their area.A sample from the 12 cities that have started participating in the Open Cities Africa project was used. He found out that on average 27.8% of buildings in the sample have an irregular geometry and 5.6% have overlaps or are an invalid polygon. However, there are important variations and some peaks with Pointe-Noire having over 24% of buildings with overlapping ways or invalid polygons and Victoria with more than 72% of all buildings with irregular, i.e. non-rectangular, form.Various explanations are proposed such as the lack of good imagery for the area, dense urban areas, mapathons with inexperienced contributors and low number of local contributors.

OpenStreetMap Foundation

  • The minutes of the OSMF board meeting on August 16 have been published. Topics included: introduction of mutli-annual or life membership categories; the “Microgrants” program currently under development; GDPR; and the activities of the Advisory Board.

Events

  • Paul Desgranges and others from the French community provide another perspective on the recent SotM 2018 conference. As well as reports on a selection of individual talks, the section “La tendance générale” looks at implications for the general direction of OSM. (fr) (automatic translation).The selection of talks available as videos on the YouTube channel have meanwhile been extended.

Humanitarian OSM

  • luc_kpogbe wrote a diary post on how HOT microgrants have helped in mapping the northern regions of Benin, in order to have a better knowledge of the territory and be able to react effectively in the event of crises or epidemics, since these regions are still poorly mapped,F not only on OSM. Thanks to a microgrant, OSM in Benin was able to acquire smartphones for field data collection.
  • Rebecca Firth wrote an article at the HOT website about her thoughts on inclusion at the SotM. As Rebecca laid out she felt a change in topics around inclusion, particularly gender, and explains the reasons for her positive impressions.

Maps

  • Daniel Koć, one of the maintainers of OSM Carto Map Style, wrote a diary entry about his personal design principles of the map style. His intention is to start a series of articles to introduce the OSM community to general map rendering challenges using OSM data from the project maintainer’s point of view.
  • Discostou36 suggests (de) (automatic translation) in the German forum that a special map could be developed listing facilities relevant for families with small children. amilopowers realised the idea in the form of a uMap map.

switch2OSM

  • Neil Gunto, the maker behind crazyguyonabike, a website hosting bicycle touring journals, forums and other resources, wrote a comprehensive article about his switch to OSM. The recent Google Maps price hike led him to look for alternatives. In this article he explains in detail how and why he switched to Stadia Maps, OpenCage Geocoder and Leaflet. In his conclusion he wrote: This is an example of why switching to OSM is actually a Step Forward – it gives you far more control than you had with Google.

Open Data

  • The Belgian cadastre is now available as open data as Joost Schouppe reported on the Belgian mailing list. He notes there are some quality issues with the data.

Licences

  • Maurizio Napolitano noticed the Community Data License Agreement from the Linux Foundation and asked on the Talk mailing list whether it was compatible with OSM. His interest was whether it would permit the import of whosonfirst data, which is released under that licence.

Software

  • Since Garmin removed their app Navigon from the market in May, the unrelated app Navigone from Sygic has appeared. Navigone is a renamed version of the OSM-based navigation app Be on Road.

Programming

  • Kevin Kenny wrote on the Talk-US mailing list that he has been using the code Phil Gold and Richard Weait developed to render US highway shields for several years now. However, over years during which he used the code and made a number of changes, he became out of sync with the main development line. Since he considers the distinction among highway shields is really necessary for the map in the US, he has created a repository to share his code. Kevin is inviting anyone to help with his project.
  • Christoph Hormann wrote a blog post about the rendering of ways on embankments. Unlike man_made=embankment, the additional tags embankment= and cutting= on highway or railway will not be rendered by the standard OSM Carto style. In his article he explains why this problem is more tricky than it appears and suggests a possible solution.

Releases

  • A JOSM hotfix has been released to improve the robustness against a Debian/Ubuntu bug caused by the GNOME ATK wrapper. The new version also includes some minor improvements.
  • Nominatim 3.2.0 has been released. GeoJSON and GeocodeJSON have been added as new output formats. The reverse geocoding algorithm has been rewritten to improve results in sparsely populated areas and when looking up administrative entities.

Did you know …

  • … the robot that draws OSM data with a pen?
  • … the website Visit Scotland, where you can plan your trip with OSM?

Other “geo” things

  • Oliver Beattie complained on Twitter that he had to turn off his popular radius tool because of Google’s price increase. Soon after the first response suggests he starts using OSM.
  • An article on Geospatial World describes how technologies such as remote sensing, GIS, and satellite imagery have played a crucial role in disaster management during and after the massive deluge in the southern Indian state of Kerala.
  • The UK plans to start working on a satellite system to rival the EU’s Galileo, because, as a third party country, it will not have access to the more precise, non-public service of the Galileo system, after Brexit.

Upcoming Events

Where What When Country
Dar es Salaam FOSS4G & HOT Summit 2018 2018-08-29-2018-08-31 tanzania
London Missing Maps Mapathon 2018-09-04 united kingdom
Praha – Brno – Ostrava Kvartální pivo 2018-09-05 czech republic
Stuttgart Stuttgarter Stammtisch 2018-09-05 germany
Bochum Mappertreffen 2018-09-06 germany
Lyon Rencontre mensuelle pour tous 2018-09-11 france
Berlin 123. Berlin-Brandenburg Stammtisch 2018-09-13 germany
Munich Münchner Stammtisch 2018-09-13 germany
Posadas Mapatón de parajes y caminos 2018-09-15 argentina
Berlin Berliner Hackweekend 2018-09-15-2018-09-16 germany
Grenoble Rencontre mensuelle 2018-09-17 france
Cologne Bonn Airport Bonner Stammtisch 2018-09-18 germany
Lüneburg Lüneburger Mappertreffen 2018-09-18 germany
Nottingham Pub Meetup 2018-09-18 united kingdom
Lonsee Stammtisch Ulmer Alb 2018-09-18 germany
Karlsruhe Stammtisch 2018-09-19 germany
Mumble Creek OpenStreetMap Foundation public board meeting 2018-09-20 everywhere
Buenos Aires State of the Map Latam 2018 2018-09-24-2018-09-25 argentina
Detroit State of the Map US 2018 2018-10-05-2018-10-07 united states
Bengaluru State of the Map Asia 2018 2018-11-17-2018-11-18 india
Melbourne FOSS4G SotM Oceania 2018 2018-11-20-2018-11-23 australia
Lübeck Lübecker Mappertreffen 2018-09-27 germany
Manila Maptime! Manila 2018-09-27 philippines
Düsseldorf Stammtisch 2018-09-28 germany

Note: If you like to see your event here, please put it into the calendar. Only data which is there, will appear in weeklyOSM. Please check your event in our public calendar preview and correct it, where appropriate.

This weeklyOSM was produced by Nakaner, PierZen, Polyglot, Rogehm, SK53, SunCobalt, TheSwavu, YoViajo, derFred.

weeklyOSM 422

 

14/08/2018-20/08/2018

PT_Assistant's Routing Helper

  • Left: visualisation of currently selected route relation
  • Top right: New Turn-by-Turn Routing Helper
  • Bottom right: New Fast-Forward routing, based on continuous sequence of ways from other route relations. Here it’s proposing to add 50 ways in one go. 1 | © Polyglot CC0

Mapping

  • The JOSM PT_Assistant plugin for public transport mapping gained several new features :
    • A wizard to help set up the JOSM environment for mapping public transport and other route relations
    • The double split map mode
    • Various bug fixes and improvements
    • Routing Helper, which can be invoked from within the Relation Editor.

    This last addition may have a big impact on how bus itineraries are mapped from now on.

    User Polyglot is creating screencast videos to show how it works and with various tips and tricks, both for working with JOSM and for mapping route relations in particular. They will be linked from the wiki documentation page.

  • Delhi-based mapper contrapunctus discovers that mappers themselves benefit from what they have added to OSM. This was proved several times during a recent trip to Himal Pradesh, and during his survey of the longest bus route forming a big circle around the city.
  • The German Federal Ministry of Education and Research is supporting the so-called Terrain Projekt (de) (automatic translation) that aims to develop a portable routing device for blind or visually impaired people. One subproject has now introduced an early prototype (de) in the German OSM forum (automatic translation). A paper on this topic is closed access but will be released to the public soon.
  • The Open Data Institute (ODI) published a blog post explaining contributions from large corporations such as Microsoft, Apple, Facebook and others to OSM. The blog post includes a list of success factors for such corporate projects, which could be summarised as: be more open and cooperative than OSMF’s direct editing policy requires.
  • User higa4 analysed the state of mapping coverage of Japan. (ja)
  • Eric Gunderson, Chief Executive of Mapbox, tweeted “done with buying satellite imagery…”. Only time will tell if this is hyperbole.

Community

  • OSM now has a caching server in South Africa as tweeted by OpenStreetMap ZA. As you can see on the map, the new cache server delivers tiles to countries in Southern African countries.
  • Mastodon the free Twitter clone is also gaining ground in the OSM community. We now know of two instances: French and English.
  • AMEDD, a Malian NGO, hosted a training workshop on August 13-18 about OSM and free GIS in Koutiala, organised by Saliou Abdou (International Volunteer from Francophonie deployed as an OSM facilitator, a program supported by Les Libres Geographes) with the active contribution of OSM community members from Mali and Benin.
  • Kinshasa is one of the cities selected by the World Bank as part of the Open Cities Africa project with the aim of strengthening collaboration between the local OSM community and public institutions and contributing to better disaster risk management.OSM-RDC and Potentiel 3.0 designed and organized three days of focus groups for the OSFAC of Kinshasa. Kapay Yongolo was responsible for these three days. Supported by Christian Shadrack, they worked with leaders from the 17 districts of Kisenso and two districts of Matete to identify and map infrastructure at risk during epidemics and floods.

Events

  • Christine Karch announces the next hack weekend in Karlsruhe on 20th and 21st of October 2018. If you want to participate register on the wiki page.
  • The UK Mapping Festival 2018 published an appetiser article for the upcoming conference. Topics covered include: secret techniques used by Soviet agents to map London during the Cold War; the evolution of sensing technologies and, an overview of OpenStreetMap.
  • The SotM US program is online.

Humanitarian OSM

  • Youthmappers also take care of mapping for humanitarian purposes.
  • Missing Maps blogged about a training session, led by an American Red Cross GIS team, for the Viet Nam Red Cross and the American Red Cross Viet Nam Delegation. The target was enabling participants to organise community mapping, especially with mobile data collection, and to use GIS tools with open data to generate maps, particularly for use during natural disasters.
  • HOT received a grant from NetHope, a consortium of NGOs that specialises in improving IT connectivity among humanitarian organisations, with 22 OSM communities as beneficiaries. In a blog post HOT shared its experience teaching school children in Peru using OSM tools and a 360 degree camera to create augmented reality content.
  • Code for Pittsburgh planned a hackathon with the HOT Team during the 2018 National Day of Civic Hacking, a Code for America project. During the event OSM was introduced to the participants and the theory was immediately converted into practice by mapping 1543 buildings and other features as part of HOT projects.

Maps

  • Christoph Hormann highlights in a diary entry the stricter rendering of areas that now happens following an upgrade of osm2pgsql. The changes enforce higher standards of QA for mappers, and make life for data consumers easier. Although the change is not limited to multipolygons, the most prominent objects which disappeared from the map were multipolygons. Many of these have already been fixed.
    For technical details of the changes refer to the post.
  • Wikimedia’s map feature improvement project has ended. Wikimedia states that, currently, no more follow-up work is planned. The announcement follows the successful implementation of a couple of new features such as OSM maps and map internationalisation, back-end stability and other improvements that were on the Wikimedia Wishlist.

switch2OSM

  • Amazon has probably also taken a liking to OSM. Some employees introduced themselves in the German forum and, obviously, also get help with their edits there.

Open Data

Programming

  • [1] Biswesh Mohapatra detailed the work he did on JOSM’s PT_Assistant plugin for his GSoC 2018 project. He resolved numerous bugs and added some useful new functionality for working on public transport itineraries and stops, but also for editing bicycle and foot route relations.
  • Thomas Hervey wrote a diary post about his work on the iD editor during his Google Summer of Code project. He added support for user notes to iD and is now working on adding QA tools like KeepRight.
  • Princi Vershwal wrote an article on medium.com about adding vector tile support to iD as part of her Google Summer of Code project. In the article she explains how she implemented a basic rendering of vector data.

Releases

  • kocio announced the roll out of a new OpenStreetMap Carto stylesheet release in a diary post. The new release added some icons for three “leisure=” and three “shop=” values, improved the label distance on waterways and railways and made some further improvements.
  • User Wambacher has updated his OSM Software Watchlist, which includes almost all OSM-related software along with the date of their latest release.

Did you know …

  • Cartography Playground, a simple and interactive website for explaining cartographic algorithms, problems and other matters?
  • Maposmatic which creates maps of cities from OpenStreetMap data with an index of streets and many different overlays like fire hydrants or the well-known waymarked trails by Sarah Hoffman (aka lonvia).
  • … of OpenInfraMap? User Laurent Combe asks (automatic translation) about the frequency of updates.
  • … about the map that puts surveillance cameras under surveillance?
  • … the universities and colleges that participate in youthmapper?

OSM in the media

  • La RZ radio, Buenos Aires, interviewed Juan Blas Tschopp, an Argentinian OSM contributor. The topics covered not only OpenStreetMap, but also Geochicas and the upcoming SotM Latam 2018 event.

Other “geo” things

  • Shaded Relief introduced a new equal-area pseudocylindrical projection called Equal Earth Projection as a response to the demand for fair maps. In particular those allowing direct comparison of the areas of places in different parts of the world, avoiding the notorious artefacts of a massive Greenland and a tiny Africa. The creators compare their work with other equal-area projections in the article and highlight the advantages of the new way to display maps.
  • Niantic’s Pokémon Go has been using OpenStreetMap data from the outset, moving to full use of OSM for the map background in December 2017. On the occasion of the second Pokémon Go festival in Chicago, the boss of the company reflects on the first two years in an interview with The Guardian.
  • Pennsylvania State University introduced nice looking, new mobile-friendly visitor maps with 3D views of campus and OSM as basemap for surrounding areas. At the end of the article you can find links to example maps for the university park.
  • Map porn at its finest is in the article The World’s Newest, Most Gloriously Designed Maps from Atlas Obscura.
  • Very nice idea. An interactive acoustic map collects the sounds of Monroyo, Spain. Esparagon.es reports that the artist Anna Katarina Martín created this map during a stay in Monroyo from July 9th to August 5th with the help of residents. She succeeded in making the inhabitants aware of everyday noises that otherwise “went completely unnoticed”. (es) (automatic translation)

Upcoming Events

Where What When Country
Takatsuki みんなでエディタソン#01 2018-08-26 japan
Düsseldorf Stammtisch 2018-08-29 germany
Dar es Salaam FOSS4G & HOT Summit 2018 2018-08-29-2018-08-31 tanzania
Manila Maptime! Manila 2018-08-30 philippines
London Missing Maps Mapathon 2018-09-04 united kingdom
Praha – Brno – Ostrava Kvartální pivo 2018-09-05 czech republic
Stuttgart Stuttgarter Stammtisch 2018-09-05 germany
Bochum Mappertreffen 2018-09-06 germany
Lyon Rencontre mensuelle pour tous 2018-09-11 france
Berlin 123. Berlin-Brandenburg Stammtisch 2018-09-13 germany
Munich Münchner Stammtisch 2018-09-13 germany
Posadas Mapatón de parajes y caminos 2018-09-15 argentina
Berlin Berliner Hackweekend 2018-09-15-2018-09-16 germany
Buenos Aires State of the Map Latam 2018 2018-09-24-2018-09-25 argentina
Detroit State of the Map US 2018 2018-10-05-2018-10-07 united states
Bengaluru State of the Map Asia 2018 2018-11-17-2018-11-18 india
Melbourne FOSS4G SotM Oceania 2018 2018-11-20-2018-11-23 australia

Note: If you like to see your event here, please put it into the calendar. Only data which is there, will appear in weeklyOSM. Please check your event in our public calendar preview and correct it, where appropriate.

This weeklyOSM was produced by Anne Ghisla, Nakaner, PierZen, Polyglot, Rogehm, SK53, SunCobalt, TheSwavu, YoViajo, derFred, jinalfoflia, sev_osm.