weeklyOSM 418

 

17/07/2018-23/07/2018

Logo

Photon, typo tolerant, multilingual geocoder that supports auto-complete 1 | © Komoot © map data OpenStreetMap contributors

Mapping

  • Ilya Zverev is proposing a lighter tagging scheme for public transport. In an email to the tagging mailing list, he notes a growing discomfort with the current scheme. The concepts behind these suggestions will be covered in his talk What’s up with the public transport at SotM in Milan.
  • Portuguese researchers have published a paper in the journal Hydrology on how data from OSM can be used to improve digital elevation models. They compared a DEM built from Shuttle Radar Topography Mission (SRTM 30) data combined with waterways from OSM, with a DEM from the British Ordnance Survey. They concluded that an improvement in the horizontal accuracy and a decrease in systematic errors is possible.
  • As SotM-US is being held in Detroit this year Mikel Maron is helping to make OpenStreetMap in the area better, starting with bike share docking stations. He wrote a diary post describing how he was confirming and improving the locations of bike share stations, that were already added in OSM, using open data along with aerial, Bing Streetside, Mapillary and OpenStreetCam imagery. In his comprehensive blog post he explains his workflow and what he has learned during this exercise.
  • Following feedback from a user of Microsoft’s Soundscape, an app aimed at providing spatial information to people with low vision, Microsoft asked for volunteers in the OSM forum to help improve the mapping of Montclair Plaza (Wikipedia, OSM.org), near Los Angeles.
  • The granularity of the values for the building attribute tag is causing misunderstandings. On the tagging mailing list the question of the difference between building=house and building=detached was raised. Apparently, there are different understandings depending on the region.

Community

  • CartONG supports aid agencies with GIS and field missions. This NGO used its July newsletter to take a look back to 2017 and provide an update on current projects.
  • The idea of visualising road orientation is still drawing attention. Baran Kahyaoglu showed his colour-coded road orientation maps on Twitter.

OpenStreetMap Foundation

  • The funding for a new uMap instance was secured by the approval (de) (automatic translation) of the FOSSGIS e.V., a local organisation supporting free and open GIS software and acting as local chapter for the OSM and OSGeo Foundations in Germany. The uMap instance is intended for international usage.
  • The OSM Foundation has announced the “welcome mat”, an introduction to OSM for people unfamiliar with it. This project is a work in progress and is available on OSMF’s public repositories.

Events

  • Alessandro, Marta and Francesca, of the local Italian organisation team, have released an Android app for the SotM 2018. The app was created by Laura Barroso, from the Spanish weeklyOSM team. The .apk file can be downloaded here. Besides the program for the three days there are also links to the SotM-tweets and an OSM map with routing.
  • The website of the State of the Map US 2018 has been updated with some important information. The conference will take place from October 5 to 7 in Detroit, Michigan.
  • The Free and Open Source Software for Geospatial (FOSS4G) conference State of the Map Oceania in Melbourne this November has announced its keynote speakers.
  • The State of the Map Asia will take place on November 17 and 18, 2018 at the Indian Institute of Management in Bangalore.

Humanitarian OSM

Education

Maps

  • Paul Norman, member of the OSMF board, wrote an article for the Wikimedia mailing list about his experience and lessons learnt with creating a new style and vector tile schema for the WikiMedia foundation. Beside styling improvements, the style changes were to enhance the representation of disputed borders.
  • Penegal has opened several pull requests for the OSM Carto stylesheet to improve the readability of the base OSM map. He wants to increase text and shield distances for waterways, railways and roads.

switch2OSM

  • The French department Maine-et-Loire has switched (fr) (automatic translation) to OpenStreetMap. Like other professional clients, they had to adjust rapidly following the announcement in May of an enormous increase in the cost of Google Maps (free for them until now). The OSM ecosystem and the drastic increase of the quality of OpenStreetMap over the last few years facilitated the decision.
  • On der Apotheke a Polish company recently wrote about how and why they chose to change map providers for their website, following the recent pricing changes of Google Maps.

Software

  • The Critical Numbers webapp by GIScience Research Group, Heidelberg visualise in the form of a bar chart the percentage of OSM Tasks mapped and validated (data from the HOTOSM-Tasking-Manager API instance). Data can also be downloaded as GeoJSON for further processing in QGIS or other applications. The authors have created an extensive introduction with examples. Such quantitative analysis could take into account other variables such as the contributor’s OSM experience or topological data errors.
  • Notes in iD have arrived is the title of a blog post by Thomas Hervey. Notes in iD have long been desired by users and can now be tested in a preview version.
  • The geospatial company Boundless announced that it will be hosting a webinar on August 2nd focused on Boundless Offline Tile Server™ (BOTS), a lightweight, portable, offline, high-performance map tile server.

Programming

  • Maning Sambale writes about his experiments with RoboSat for feature detection from aerial imagery. He confirms that data cleaning and utilization of proper training sets are crucial for accurate results, and suggests using this procedure to facilitate remote mapping.
  • A large influx of spam in OSM notes with personal insults was reported (de) (automatic translation) in the German forum. After discussions with the DWG and a block did not help to calm the situation, Frederik Ramm submitted a pull request that will stop anonymous comments in notes on OSM’s website if implemented.
  • Following her introduction after Anusha Singh was selected to join the Google Summer of Code working on the OSM Public Transport Editor, she has now provided an update on progress she has made so far.
  • Jennifer Cats wrote a diary post on how she identifies spam or other difficult labels (i.e. name=) using language processing techniques.

Releases

  • The version 4.13.0 of OSM’s carto stylesheet has been released. Changes include increased shield distance on roads and new icons for five shop types and three amenity types. The documentation has also received improvements. The full list of commits can be seen on GitHub.
  • According to a tweet from wambacher, there are new versions for the following OSM-related software available: Komoot Android, Leaflet 1.3.3, Magic Earth iOS 4.1.0 and several Mapbox GL products.
    You can find these updates along with an almost endless list of OSM-related software and current versions in Wambacher’s software list.

Did you know …

  • [1] … photon? An elasticsearch based Geocoder, multilingual, typo tolerant and that supports auto-completion. Source code is available on GitHub and an example implementation is running at komoot who initiated his development. Download is available and the installation is very easy.

Other “geo” things

  • Stéphane Péneau tweets his disappointment that Mapillary is still compressing images. He added examples of how the compression lowered the quality of the images.
  • SpringerOpen, part of the global academic publishing company Springer, made a Call for Papers for a planned publication with the title Special Issue: Open Source Geospatial Software as reported on the OSM-Science mailing list. Papers on Volunteered Geographic Information (VGI), Crowdsourcing and OpenStreetMap (OSM) are all invited as outlined on SpringerOpen’s website.
  • The Register reports on a paper from Microsoft, Virginia Tech and the University of Electronic Science and Technology of China. It describes how vehicles can be “hijacked” with a Raspberry Pi and a Software Defined Radio of the type HackRF One (175 US dollars). Technically, this is GPS spoofing, which is often used in military manoeuvres. To keep the vehicle on the road, routes were calculated using OSM data.
  • A Vietnamese online newspaper has published an article complaining about the appearance of the Paracel Islands on Facebook’s maps. Like many other island groups in the area, these have multiple sovereignty claims over them. According to the article the Vietnamese government will try and rectify this “mistake”. Facebook apparently stated that “all its maps were provided by third-party companies like OpenStreetMap and HERE Maps”. The OSMF’s position is clear – “The OpenStreetMap community operates under the ‘on the ground’ principle” and “you are free to make maps from our data leaving out or putting in what you need for harmony with your general usage, culture and legal system”. What organisations with different national audiences tend to do in a situation like this is to provide different maps for each, with the appropriate “alternative facts” presented to each audience (a Vietnamese user would see the islands as part of Vietnam; a Chinese one as part of China).

Upcoming Events

Where What When Country
Ciudad del Este Introducción al mapeo colaborativo con Openstreetmap 2018-07-27 paraguay
Milan State of the Map 2018 (international conference) 2018-07-28-2018-07-30 italy
Stuttgart Stuttgarter Stammtisch 2018-08-01 germany
Bochum Mappertreffen 2018-08-02 germany
Buenos Aires Mapatón-taller OSM 2018-08-04 argentina
Amagasaki みんなのサマーセミナー:地図、描いてますか?描きましょう! 2018-08-05 japan
London Missing Maps Mapathon 2018-08-07 united kingdom
Munich Münchner Stammtisch 2018-08-08 germany
Urspring Stammtisch Ulmer Alb 2018-08-09 germany
Berlin 122. Berlin-Brandenburg Stammtisch 2018-08-10 germany
Tokyo 東京!街歩き!マッピングパーティ:第22回 富岡八幡宮 2018-08-12 japan
Viersen OSM Stammtisch Viersen 2018-08-14 germany
Karlsruhe Stammtisch 2018-08-15 germany
Mumble Creek OpenStreetMap Foundation public board meeting 2018-08-16 everywhere
Rapperswil 10. Micro Mapping Party Rapperswil 2018 (inc. OSM-Treffen) 2018-08-17 switzerland
Dar es Salaam FOSS4G & HOT Summit 2018 2018-08-29-2018-08-31 tanzania
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, Spanholz, SunCobalt, YoViajo, derFred, jinalfoflia.

weeklyOSM 417

10/07/2018-16/07/2018

Logo

Orientation of streets in European cities 1 | © Geoff Boeing, Tobias Kunze © map data OpenStreetMap contributors

Mapping

  • Warin, who noticed a new mapper trying to map a golf course, complained to the tagging mailing list about the current wiki page describing how to map a golf course. That triggered a lengthy discussion on the mailing list, where we discovered that it makes sense to consider even the grass height in recognising the tee area.
  • Leo Gaspard would like the landuse=highway tag to be used more often as he wants road areas to be tagged along with their surfaces. However, as noted during the conversation, the widely used area:highway=* includes an optional surface tag already.
  • Danilo reported on the Swiss mailing list (de) his experience with creating his own aerial images with a paraglider. He mentioned the project opendronemap.org, a toolchain for processing aerial imagery. His example result (large file) looks promising.
  • How many traffic light nodes should be added for complex intersections? This question was raised (de) in the German forum. The conclusion was to tag traffic lights for pedestrians with highway=crossing and crossing=traffic_signals to avoid multiple time penalties when routing cars over an intersection with multiple traffic lights. The possibility to add the direction of traffic lights was also mentioned.
  • The Open Knowledge Lab Karlsruhe has created a map that shows farm shops, market places and vending machines for food and milk in Austria, Germany, Switzerland and some neighbouring regions. They explain the map and future plans in the German forum (de). If you want to join the development or make your own map for your region, you can find the project on GitHub.
  • Warin61 has created a proposal for ephemeral water, i.e. water that is only present for short duration.
  • The voting for the tagging proposal aeroway=highway_strip is under way.

Community

  • The OSM API is currenly running slower than usual because the master OSM server is moving from Imperial College, London to the Equinix data centre in Amsterdam. In the transition period, a slower server in York, England is serving as the database master server (we reported earlier). The OWG is looking for volunteers from the Amsterdam OSM community to help during the move on 25 and 26 July.
  • OSM US has not found the right person for the new position of an executive director and is still waiting for more applications.
  • OSM Belgium has chosen Lionel Giard (OSM Anakil) as mapper of the month and published an interview with him about his way of contributing.
  • chris66 found an object during his field survey which was treated as a land mine by the police. His finding resulted in the arrival of an Ordnance Disposal Unit and was reported in a local newspaper. He received tips in the always-helpful German forum (de) (automatic translation) on the different ways to tag a crater.
  • The voting for the OSM Awards ends on July 26th. Please vote if you have not done so already.
  • The media platform TriplePundit published a story about the benefits of collaborative problem-solving. It mentioned the well-known code creation and mapping efforts for disaster relief but also forward-looking development aid such as openRMS, an open source enterprise electronic medical record system platform for resource-constrained environments.
  • [1] Rixx published a blog post about the orientation of streets in European cities. He wrote a Python script, which
    he made available on GitHub, which shows the direction that a city’s streets run in most often. He continues the work of Geoff Boeing who wrote a blog post “Comparing City Street Orientations” using his OSMnx Python library. In a description of OSMnx Christoph linked to a number of blog posts about OSMnx use cases ranging from figure-ground diagrams over isochrone maps to network-based spatial clustering.Mapbox catches up with its own version and presented a slippy map with streets orientations. In a blog post they explained their implementation that is available at GitHub.
  • The company Uber uses OSM internally for fare calculations and to optimise driver and rider matching as they have explained in the forum. The team in Palo Alto will start fixing bugs found in OSM by Uber drivers in the Delhi region in India as a test. According to their forum post, they will share the profiles of the editors on Uber’s OSM page, will follow the Organised Editing Best Practices and Indian guidelines, and do not plan to make large-scale, machine-generated edits.

OpenStreetMap Foundation

  • The OpenStreetMap Foundation has published a report highlighting OSM and OSMF related updates. Regular readers of the weeklyOSM may have heard some of the updates already but there is also a lot of new information such as working group insights in the report.

Events

Maps

  • The outdoor map provided by Andy Allan’s commercial Thunderforest Platform is now rendering difficulty classifications based on sac_scale.
  • Skinfaxi introduces a new service of meaningfully cut out topographic maps for Sweden and the southern neighbouring countries on a scale of 1:50.000, which can be downloaded as PDF. Unfortunately there is hardly any documentation (example as PDF).

switch2OSM

  • User jbelien has published an article in the OSM user diaries on why one should use OSM instead of Google. The article was originally written for the Open Summer of Code 2018 in Belgium. If you prefer the article in French, voilà.

Programming

  • Have you ever been impatiently waiting for your large changeset to finish uploading? Then you might be interested in the blog post from mmd. He wrote about a new, faster changeset upload implementation that has been developed and is available for testing now. Instructions on how to help with testing are included in the blog post.
  • A new version of GeoPandas, an extension for Python’s data science package Pandas, was just released. GeoPandas extends Pandas’ data types and allows spatial operations on geometric types that would otherwise require a spatial database such as PostGIS. The new version 0.4.0 improves the performance and behaviour of the overlay functionality. Further, there is a long list of other new features and bug fixes.

Releases

  • The version 1.3.0 of Maputnik, a free visual style editor for maps, has been released.
  • Wambacher’s software list was updated as of July 17. The almost endless list shows the current versions of OSM related software.

Did you know …

  • … that Thomas Konrad created a website showing the coverage of buildings in Austria compared to public data. While he considers Austria as a whole nearly complete (with coverage greater than 85 percent), there are still areas with coverage below 50 percent where some work needs to be done.
  • … of Pascal’s website Unmapped Places? The intention of this tool is to detect under-represented regions a.k.a. “unmapped” places in OpenStreetMap. Basically it checks whether a road can be found within 700 m around a place= tag or otherwise it will be flagged as unmapped.

Other “geo” things

  • The German blog beyong-print published a post (de) about the start-up cartida that is offering art prints of maps based on OSM data in different styles and sizes. Currently they only ship to Germany, Austria, France, Netherlands, Belgium and Luxembourg but they plan to add more countries.
  • govtech.com, an online portal covering information technology’s role in state and local governments, reported that Google’s new API restrictions will have minimal impact on goverment bodies. From July 16 onwards, Google Maps requires an official API key and a valid credit card attached to the account in order to work. However, state and local governments prefer using paid products from ESRI, Mapbox and Boundless Spatial for their work.
  • The Mississippi’s Board of Licensure for Professional Engineers and Surveyors sued the company Vizaline, which provides banks with polygons on satellite images for use in granting loans. The Board says that it should be the state entity solely responsible for land surveying.
  • It is no secret that new edits do not always improve the data in OSM. A research study now provided some more insight. The conclusion was that the completeness and positional precision of features can be improved up to 14% if you take the history data of objects into account.
  • Mongabay, an online platform for environmental topics, published an article about MapHubs. MapHubs is a commercial platform storing maps and spatial data for viewing and analyzing. Paying users can use public and private data sets to create customised maps showing deforestation and generate time-lapse videos in “minihubs” called websites.
  • The website visualising data published the 53th episode of its “the little of visualisation design” series. The series focuses on small design choices and demonstrates with a sample project in each episode. Using an article from The Guardian, the website explains in the current episode the use of thumbnail map images that helps orientate the viewer.

Upcoming Events

Where What When Country
Bamako OSM training at Faculté Sciences et Technologies 2018-07-16-2018-07-20 Mali
Mumble Creek OpenStreetMap Foundation public board meeting 2018-07-19 everywhere
Heidelberg End of semester Mapathon 2018-07-19 germany
Essen Mappertreffen 2018-07-21 germany
Tokyo 東京!街歩き!マッピングパーティ:第21回 増上寺 2018-07-21 japan
Greater Manchester More Joy Diversion 2018-07-21 united kingdom
Nottingham Pub Meetup 2018-07-24 united kingdom
Düsseldorf Stammtisch 2018-07-25 germany
Lübeck Lübecker Mappertreffen 2018-07-26 germany
Manila Maptime! Manila 2018-07-26 philippines
Milan State of the Map 2018 (international conference) 2018-07-28-2018-07-30 italy
Stuttgart Stuttgarter Stammtisch 2018-08-01 germany
Bochum Mappertreffen 2018-08-02 germany
Amagasaki みんなのサマーセミナー:地図、描いてますか?描きましょう! 2018-08-05 japan
London Missing Maps Mapathon 2018-08-07 united kingdom
Munich Münchner Stammtisch 2018-08-08 germany
Urspring Stammtisch Ulmer Alb 2018-08-09 germany
Dar es Salaam FOSS4G & HOT Summit 2018 2018-08-29-2018-08-31 tanzania
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 Nakaner, Polyglot, Rogehm, SK53, SunCobalt, YoViajo, derFred, jinalfoflia.