Blogs.OpenStreetMap.org

May 04, 2016

SK53

Where have all the woods gone from Google Maps?

Very recently there was a nice post by Justin O'Beirne about the cumulative effect of changes to the cartography of Google Maps.  Richard Fairhust summarised his views on twitter:



This is just my (very) minor contribution to the discussion.

The Botanical Society of Britain & Ireland (BSBI) uses Google Maps as the background to their maps of plant distributions. Over the past couple of weeks I've been using it a lot because I've been interested in two things:
  • Where I might fund particular plants relatively close to where I live;
  • Which plants I see might be of interest to the county recorders.
As at this time of year many of the botanical highlights are to be found in ancient woodlands it's damn useful to see where the woods are when assessing the BSBI records. That's why I noticed woods disappearing from the Google cartography as one zooms in.

This screenshots shows successive zooms of an area in central Nottinghamshire which includes Clumber Park an two old woods, Gamston & Eaton Woods. The latter two are centre right above the village of Askham.



All woodland just disappears between these two zoom levels.

Here's the active map so one can play with zooming in & out.



Losing woods at high zoom levels is another example of loss of functionality. In practice it makes the maps layer useless for interpreting botanical data: I have to resort to using the satellite layer. Even that is not always easy because sometimes fields also appear dark green.

Google does use a couple of other green shades for things like parks, golf courses, and possibly nature reserves (see Sherwood Forest NNR near Edwinstowe). I don't know if these come on and off in a similar arbitrary pattern.

by noreply@blogger.com (SK53-osm) at May 04, 2016 11:45 AM

May 03, 2016

"OpenStreetMap.org User's Diaries"

Fermate SAF Udine/5

Ulteriori fermate aggiunte. A questo punto è utile fare un bilancio (la zona centrale è valutata separatamente, quindi la linea 9 è OK, ma solo nelle zone esterne alla circonvallazione, perché un paio di fermate centrali possono mancare):

Centro (Circonvallazione inclusa): mancano numerose fermate, specialmente direttrice N-S; Linea 1: mancano fermate zona v.le Volontari - via Forni di Sotto (posizionamento migliore); Linea 2: mancano fermate da Rizzi a Feletto (posizionamento migliore); Linea 3: mancano 2 fermate in via Molin Nuovo; Linea 4: -Ovest: mancano fermate oltre A23 a Santa Caterina, Pasian di Prato e Villa Primavera; -Est: mancano fermate zona Riccardo di Giusto e Villaggio Resistenza; Linea 5: -Nord: mancano fermate Passons; -Sud: mancano fermate da p.le D'Annunzio in giù; Linea 6: mancano fermate da p.le D'Annunzio in giù; Linea 7: mancano fermate da via Gorizia in su; Linea 8: mancano fermate da v.le Trieste a capolinea via del Bon; Linea 9: OK (!); Linea 10: mancano fermate via Forni di Sotto (vedi linea 1); Linea 11: mancano fermate da v.le Trieste a capolinea Laipacco.

Linee speciali: Linea A: OK (sono solo 2 fermate...); Linea B: mancano fermate Pasian di Prato (vedi linea 4); Linea C: mancano fermate zona v.le Volontari - via Forni di Sotto (vedi linea 1); Linea E: mancano fermate zona via Emilia-via Bariglaria (vedi linee 4 e 7); Linea F: manca nome capolinea (tabella non presente alla fermata); Linea G: mancano fermate zona via Buttrio-via Pola (vedi linee 8 e 11); Linea N: mancano fermate zona Nord (vedi linea 7);

by Gabriele Dri at May 03, 2016 08:13 PM

May 02, 2016

"OpenStreetMap.org User's Diaries"

Mappning av diverse skogsstigar och grustag

Hade myndighetsångest eftersom jag är i konflikt med A-kassan. De tycker att jag inte står till arbetsmarknadens förfogande eftersom jag är för aktiv i mitt liv. De har hittat en massa grejer på nätet som jag gjort, hoppas bara de inte hittar hit så de ser att jag gjort ännu mer saker och skrivit ännu fler texter. Idag åkte jag ut i skogen för att fly alla problem och bara var i nuet med naturen. Åkte till en sjö och tittade på svanar, sedan vidare upp till ett grustag. Grustaget var inte vattenfyllt, så det var bra info då jag försöker kartlägga vilka stenbrott och grustag som man kan bada i. Mappade en skogsväg som troligen taggas som en dålig traktorväg. Den gick rakt in i skogen och ledde fram till ett kalhygge. På vägen hem såg jag en bokbuss, det kändes visionärt som i en dröm. När den åkte vidare spelade bussen en melodi, kändes nästan som nåt som föreningen "Allt åt alla" drivit igenom.

by Nidron at May 02, 2016 08:44 PM

CONVOCATORIA JORNADA OSM CUSCO

El día miércoles 25 de Mayo de 2016, a partir de las 09:00 (en lugar a definir)

Se convoca la realización de una jornada de un mapeo colaborativo de OpenStreetMaps en la ciudad de Cusco para recoger información específica de accesibilidad en el centro histórico de esta ciudad. Dicha información se utilizará en la construcción de indicadores y elaboración de informes, pero el principal objetivo es construir una base de datos abierta sobre esta materia para la ciudad.

La actividad es parte de la SEMANA DE LA ACCESIBILIDAD CUSCO 2016 (23-27 de Mayo 2016) donde además del mapeo, se realizarán talleres, etnografías, entrevistas e intervenciones participativas en los espacios y las vías públicas con la finalidad de concienciar a la población local sobre la importancia de la accesibilidad universal.

Durante la jornada se abordaran los siguientes temas: • Movilidad accesible y segura • Itinerarios peatonales accesibles

La jornada se desarrollará de la siguiente forma: 09.00 Bienvenida y presentación de maperos 09.15 Formación • Cómo funciona OSM • Instrucción en el uso de un receptor GPS • Accesibilidad universal • El itinerario peatonal accesible 10:00 Mapeo en campo 12:30 Agradecimientos y tercer tiempo (lugar pendiente de confirmar)

Esperamos contar con su participación y colaboración Saludos cordiales

Interesados contactar: Francesco Cocco | francesco.cocco@acceplan.com

by Francescocco at May 02, 2016 04:14 PM

Sieben Jahre OSM ...

… sieben wunderschöne OSM-Jahre sind nun vorbei und wie jedes Jahr, möchte ich wieder einmal ein kleines Resümee ziehen.

Mein erstes Highlight in diesem OSM-Jahr hatte ich am 22.07.2015. An diesem Tag sah ich, mehr oder weniger durch Zufall, dass ich meinen 2000 Änderungssatz eingebracht habe. Immer hin ein kleines Jubiläum :-).

Im Urlaub sollte es dieses Jahr nach Mallorca gehen. Mallorca ? Wenn es ein Reiseziel gab, wo ich nie hin wollte, war es diese mit Vorurteilen belastete Insel. Nachdem ich mich mit meinem Schicksal abgefunden hatte, warf ich natürlich zuerst einen Blick auf die OSM-Karte. Plötzlich fand ich die Idee gar nicht mehr so schlimm! Die Orte der Insel waren zu meiner großen Überraschung noch nicht sehr detailliert erfasst und somit fühlte ich mich plötzlich wie ein kleiner Abraham Cresques, der nun voller Tatendrang dem Urlaub entgegen sah. Schnell noch einmal im Süden der Insel geschaut um mich davon zu überzeugen, dass nicht nur der Osten der Insel nicht erfasst ist. Denn das genaue Urlaubsziel stand ja noch nicht fest. Auch hier gab es noch genügend zu tun. Die wirklich böse Überraschung folgte allerdings mit dem gebuchten Urlaubsort. Peguera hieß er und der war bis auf die letzte Ecke vollständig erfasst. Letztlich gelang es mir dann doch noch, die eine oder andere nicht erfasste Mülltonne zu finden. Den überwiegenden Teil meiner Beute fand ich dann allerdings, als wir auf der Insel unterwegs waren. Und selbst in Palma konnte ich bei einem Bierchen im Straßenkaffee sitzen und in aller Ruhe noch das Eine oder Andere mappen.

Im Winter hatte ich mir dann vorgenommen, die kalten Tage zu nutzen und ein paar Fehler in Keep Right zu korrigieren. „Leider“ machte mir der überraschend warme Winter einen Strich durch die Rechnung. So nutzte ich lieber das warme Wetter und verschaffte mir beim mappen etwas Bewegung.

Die ersten sonnigen Tag des neuen Jahres, nutzte ich für einen Ausflug an den Großen Heinersdorfer See. Dort weckte ein Wegweiser meine Aufmerksamkeit, auf dem gesp. Findling stand. Wer macht denn sowas ? Und warum wurde der denn gesprengt? Das ergibt doch alles keinen Sinn ?! Also rein ins Auto und ab ging es. Die Wege im Wald wurden immer schlechter , wenden war kaum noch möglich und die Bodenfreiheit unter meinem Auto ließ auch ganz schön zu wünschen übrig. Nur vom dem ausgewiesene Findling war weit und breit keine Spur. Nach einem abenteuerlichen Wendemanöver verließ ich erfolglos den Wald aber meine Neugier war geweckt. Später zu Hause recherchierte ich ein wenig im alles umfassenden Internet und musste feststellen, dass ich ganz schön danebenlag :-). Die Abkürzung gesp. stand für gesponsert. Soll heißen, dass der Ort ihn zu seiner 600-Jahrfeier bekommen hat. Leider kennen ich die genau Position des Findlings bis heute nicht und um raus zu finden wo er wirklich liegt, müsste ich zum Geocacher werden :-). Aber wer weiß, vielleicht nehme ich ja eines Tages den Multicache in Angriff und mache mich auf Findlingssuche ;-).

Neulich habe ich im Forum gelesen, dass es Leute gibt, die glauben, Dinge die bei Openstreetmap eingetragen werden, könnten real werden. Auch wenn ich persönlich OSM eine solche Macht nicht zusprechen würde, frage ich mich seit dem, ob unser schöner neuer zukünftiger Berliner Flughafen deshalb so exakt und detailgetreu in OSM erfasst ist? Zumal ich bei OSM nichts finde, was noch auf eine Baustelle oder ähnlich hindeutet. Ach ja, es gab ja Leute, die einen gewissen Abwärtstrend in meinen Mapper-Tätigkeiten erkannt haben ;-). Ich glaube die Trendwende ist geschafft und es geht wieder ein wenig bergauf :-).

So Leute, das war‘s wieder einmal für dieses Jahr. Ich werde hier mal wieder verschwinden und mich in die freie „Mappper-Wildbahn“ begeben. Bis dann :-).

by webpassenger at May 02, 2016 05:38 AM

New York Long Path

I noticed that there were New York Long Path blazes when I went out a week ago (2016-04-24) to map the Wolf Creek Falls Preserve. (Actually, I knew in advance that they were there...) That made me remember that mapping the northern part of the Long Path ought to be a project. There are essentially no really good trail maps available of this trail from Huntersfield Mountain in the northern Catskills through the Schoharie Valley to its terminus (Thacher Park or Northville, according to whether you want to take it all the way to the Adirondacks). OSM has the opportunity to fix that.

I've started adding roadwalk and overlaid trails to the route relation, and posting notes for the missing sections. If nobody else does it, I'll get out and GPS the missing sections at some point, but no real promise when that will happen.

by ke9tv at May 02, 2016 02:58 AM

May 01, 2016

"OpenStreetMap.org User's Diaries"

Pascal Neis

Good #Hashtags in OpenStreetMap Changesets

#Hashtags are commonly used on Twitter to find content for a specific topic. Also in the OpenStreetMap (OSM) universe they are popular and utilized to mark changesets, which have been contributed during a special event, such as mapping parties or HOT tasks. However, in most cases, they are added in the changeset comment section. Back in November, 2015, several people discussed the pros and cons about (only) this approach. You can find a general overview of good changeset comments here. The aforementioned wiki page also shows why it is important to write a “concise and adequate“ description of the edit. Anyway, I also support the opinion that we should not generalize this statement and only add hashtags in our changeset comments. I prefer the different approach in which the contributor adds an extra changeset tag for the hashtag(s). For example, the widely used JOSM editor allows optional tags (as you can see here). On the other hand, the iD editor, which is used in many cases by new contributors, doesn’t offer this feature. However, I am sure that with some minor changes this could be fixed. A more or less complete set of recommended or mandatory changeset tags can be found here.

As a first step, I optimized my webpage to find and visualize OSM changesets with a specific comment (blog post). You can now search for any term in any tag value of all OSM changesets. So far the search only considers the changeset comments. This means that you can also search for other values such as the editor that was used or the source (imagery).

For example, you can now create interesting statistics, such as a comparison of editors used in OSM. Have a look at the kind of created objects, amount of map changes or countries …

JOSM/1.5

JOSM/1.5

iD 1.9.2

iD 1.9.2

Thanks to maɪˈæmɪ Dennis.

by Pascal Neis at May 01, 2016 05:15 PM

"OpenStreetMap.org User's Diaries"

Current Mission

My current mission is to add all the food and drink POIs in Weiz. My data source is this website: http://www.tourismus-weiz.at/de/essen-trinken

by schachtelman at May 01, 2016 01:30 PM

April 30, 2016

Mappa Mercia (UK Midlands)

End of our JOSM paint styles

Several years ago we created JOSM paint styles to help with the task of mapping gritting routes. The styles made it easier to identify which roads had the gritting tag.

The recent versions of JOSM have changed the requirements of these style plugins therefore breaking our code. If you still use the style you will see the following message that gives the reasoning and how to fix the problem. The style plugin would need to be updated to the latest MapCCS code.

Warning

This applies to both our josm-style.xml and josm-preset.xml code. Currently we have no plans to update these style plugins to the latest MapCCS code, however we welcome support from others to complete this update. If someone can come forward we will upload the new code so the functionality continues to work. For now, to prevent the warning message popping up each time you start JOSM, simply go to “View -> Map paint styles -> Map paint preferences” and delete “Winter Gritting” and “Winter Gritting2”.

We apologise for any inconvenience this causes.

by RobJN at April 30, 2016 08:23 PM

"OpenStreetMap.org User's Diaries"

Fermate SAF Udine/4

Mappata quasi totalmente zona Ovest linee 1,2,3,4,5,6,10 e 11.

Qualche fermata presenta imprecisioni nel posizionamento, oppure non è stata ancora "raccolta" e sarà corretta in futuro (per riconoscerle, sono quelle con il vecchio formato "lungo").

Nella mappa seguente non sono visualizzate le fermate della linea 3 in comune di Pozzuolo e quelle della linea 6 in comune di Tavagnacco, mentre la linea 2 a Feletto è ancora da mappare (fermate esistenti, ma ancora vecchie):

http://umap.openstreetmap.fr/it/map/trasporti-nel-comune-di-udine_80667#12/46.0798/13.2409

Nei prossimi giorni credo di percorrere la linea 3 a Nord.

by Gabriele Dri at April 30, 2016 03:51 PM

Nottingham Suburban Railway

The trek ‘n’ trace that I did Friday 29 April 2016 included a section of the (long dismantled) Nottingham Suburban Railway (NSR), including the sole tunnel still available to view. I love steam trains, tunnels & hidden places, so this diary entry will be about the NSR in St Anns.

I use Mapillary to store photos taken whilst tracking. At first, the only way that I could display them in this diary was via my personal site. However, Mapillary support (support at mapillary.com) pointed out the Download sub-menu, and that allows a photo to be shown here.

On Carlton Road, a little east of the junction with Porchester Road, on the south side of the road, is a blue-brick wall that is actually the top of the NSR Bridge which previously carried Carlton Road over the NSR Railway line between the station at the north side & the track to Sneinton tunnel at the south side.

NSR Bridge

You may notice that this is a Blue Brick bridge. Those are highest quality Engineering brick (made in Staffordshire from Etruria marl) and the reason that so many of the NSR houses, walls & bridges continue to exist & function since they were originally built in 1889. It also means that the NSR was phenomenally expensive to create. (A personal story:- when I was living in Hull I obtained some Yellow brick – Engineering brick which is one step down from the Blue – to line the inside of a chimney; it was almost impossible to drill or cut, and impervious to water).

At the right-hand side of the Carlton Road Bridge/wall is a gate, and on the right-hand side of that gate is entry for folks on foot.

NSR Bridge + gate

The path beyond leads down the cutting (20 foot, which is 7 or 8 metres high)...

NSR rail cutting

...and has the Sneinton tunnel entrance at the end. There is a locked gate that leads into the tunnel. I haven't been inside, but I understand that a Rifle Club uses the tunnel (entry by application).

NSR Sneinton tunnel entrance

The path continues beyond the tunnel entrance with a grassed-area above the tunnel.

grassed play area

One interesting oddity lies just beyond that grassed area: a 9m high railway tunnel chimney (another chimney for a different tunnel in Mapperley has been filled solid by vandals with waste, so a 9m high metal pipe makes good sense).

tunnel chimney

My Friday tracking began with that huge metal pipe. Let's now skip to Porchester Road (formerly known as Thorneywood Lane) and the Thorneywood Station. 1 Porchester Road – the former Station House – is the sole remnant of that station except for the retaining wall of the Goods Yard, though lots & lots of remnants & tunnels are hidden behind earth walls.

NSR Station House

The Station House housed the StationMaster in 1889 and was positioned above the station. Today Parry Court occupies what used to be the site of the station (on the north side of Carlton-Road bridge, although the current ground-level is at least 10' (3m) above the 1889 ground-level), then Len Maynard Court. The next set of houses to the north is Porters Walk / Paddington Mews. That is positioned above the site of a very busy Goods Yard.

The Station House is also made of Blue Brick, and another Blue-Brick wall runs down from the far side of the former Pub (Coopers Arms, 3 Porchester Road)...

Coopers Arms Sign

...running north to what was a 30 foot/9m tall retaining wall for the Goods Yard.

Thorneywood Station retaining wall

Another tunnel ran from between the Station House & Coopers Arms under Porchester Road then (as best as I can tell) the track ran up Burgass Road to the Brickyard at it's end. The tunnel on the west side has been effectively hidden by part-filling in the cutting that contained the station; I haven't yet surveyed the east side.

All that remains of the 30 foot retaining wall is a 6 foot high wall.

Goods Yard retaining wall

However, if you compare the photos at disused-stations.org.uk it quickly becomes obvious that the rest of the wall is still there, but below the ground. Indeed, if you snoop around it also becomes clear that the end of the goods yard exists within it's cutting, north of the end houses in Paddington Mews, with the entrance to the Thorneywood Tunnel at it's end. However, on the occasions that I scouted it out it was raining, with a 10 foot (3m) sheer drop to the floor and, most likely, with the tunnel entrance hidden below the soil floor. I declined to explore that section further.

Thorneywood Tunnel travels below (would you believe it) Thorneywood & emerges just beyond Permain Park.

Permain Park

The park is built directly above the tunnel but, in this case, sadly, only a wall of earth & trees is for show where the tunnel entrance should be.

Thorneywood tunnel entrance

The track of the tracks is still there to walk but, frankly, not worth the effort.

St Anns rail cutting

Beyond the modern Mickleborough Avenue the tracks travelled across a high-level bridge to a station in St Anns. One of the bridge pillars was built next to, and directly responsible for the final destruction of, the remains of the medieval St Anns Well (an actual well and holy site visited by Kings in medieval times, the waters of which still travel in a culvert under The Wells Road & St Anns Well Road), and which ended up being in the car-park of The Gardeners Public House (English drinking establishment) which latter has now itself also been erased. Honestly, the amount of interesting history that Nottingham has just thrown away is beyond belief.

I haven't yet surveyed beyond the north end of the Thorneywood Tunnel, so will end this over-extended diary entry at this point.

by alexkemp at April 30, 2016 03:42 AM

April 29, 2016

"OpenStreetMap.org User's Diaries"

Great Divide Mejico - Parte Aguas Continental

Me gustaria extender la ruta Great Divide, como lo tiene Adventure Cycling Association, pero en Mejico. Veamos si el grupo en facebook "Ruta Senderismo México (Proyecto)" logra algun progreso. He agregado varios miles de kilometros y arroyos en lo que potencialmente seria la ruta.

by rimugu at April 29, 2016 05:33 PM

Editing US National Parks

I've been tinkering with western section of Acadia National Park in Maine where I've often visited.

This led me to the discover the NP Mapping page https://www.nps.gov/npmap/tools/park-tiles/improve/ which explains how their database and OSM interface. I now add the hash tag #parktiles to my changesets.

I read that it was ok for me to adjust the border of the park which are sloppy. I started by aligning a segment of the shore line with Bing and used that segment http://www.openstreetmap.org/way/21793444 to replace the segment from the border relation http://www.openstreetmap.org/way/162904033.

I set up routes for the trails so they now appear in Waymarked Trails http://hiking.waymarkedtrails.org/#routelist?map=13!44.3162!-68.3053.

There's still lot of work to do; in just this one section of the park there are 16 serious errors and 2,246 warnings according to the JOSM Validator. Many are due to old and duplicated imported data. Anyone want to help?

I also found Chimani, https://www.chimani.com/ a free app based on OSM that works off-line and has the content of a good sized guide book.

Alan Bragg

by Alan Bragg at April 29, 2016 03:09 PM

HOT mapping initiatives over time

Today I took some time to update my list of HOT mapping initiatives -- a bit of a messy process because there's no official listing. These days I simply review new projects in the OSM edit history that have a minimum number of contributors, and label them with a simple term. The intention is to identify groups of projects that have a common theme. Typically these are disaster events, larger mapping campaigns like Missing Maps, or organisations that organise projects for their members. Of course the boundaries between them are blurry, e.g. Missing Maps is really a meta-initiative across many discrete projects.

Here's a timeline of the initiatives I've identified so far -- let me know if I missed any! There's also a PDF version, in case you want to include this in presentation slides.

#HOTOSM mapping initiatives over time

by dekstop at April 29, 2016 01:12 PM

OpenStreetMap Weekly Update

weeklyOSM 301

04/19/2016-04/25/2016

Logo

Result of a tactile map generated with a hobby CNC machine 1

Mapping

  • Marek Kleciak worked along with user Cetus on the JOSM plugin CAD Tools. This plugin will be soon available again with advanced features.
  • User Sibo Dolem asks in the German Forum about missing information in the wiki to help map building basements and stairways using 3D tagging.
  • Mapbox’s mappers share techniques for fast mapping like usage of gaming mice (shortcuts) and multiple JOSM windows at the same time to speed up their mapping (to avoid waiting until an upload is finished).
  • Martin Weilandt asks at Talk-Transit mailing-list about how to handle bus stops that have no name.

Community

  • Following their blog post about their mapping efforts with OpenStreetMap, Indie Manufacturing has written an articles about the best practices to be followed while mapping in OpenStreetMap.
  • OpenCage Data Blog talks to Simon Poole about OSM in Switzerland.
  • Pratik Yadav describes the Open Peer review process at Mapbox, where the new QA system for OSM data edits is accessible for anyone to participate.
  • There are crowdfunding efforts from OSM community in Benin to acquire a 275 km² high resolution satellite imagery for Cotonou in Western Africa. The campaign will end on the May 1st, and only a few Euros are still needed to reach the required amount.
  • Stijn Rombauts is the Belgian mapper of the month.

Imports

  • Nakaner suggests a mechanical edit removing lcn=yes and rcn=yes in the state of Lower Saxony (Germany), if they have been imported from an official map in 2014. See also the discussions at German forum and Talk-de mailing list. (Forum automatic translation)

OpenStreetMap Foundation

  • OSMF is looking for a part-time “administrative assistant”.  As having staff in the OSMF is a highly emotional topic, the idea of hiring is not considered a good thing by everyone.
  • The draft of the Articles of Associations (AoA) of OpenStreetMap UK can be commented on at Google Docs.

Events

  • You can apply for a scholarship to join the SotM 2016 in Brussels, the deadline is Sunday May 21, 2016.
  • Rory McCann suggests giving a talk about Townlands.ie on the State of the Map in Brussels on the Talk-ie mailing-list. Which talk will you give?

Humanitarian OSM

Maps

switch2OSM

  • Andy Mabbett wrote about Birdtrack on the Talk-GB: “Birdtrack is an online citizen science website, operated by the British Trust for Ornithology (BTO) on behalf of a partnership of the BTO, the RSPB, BirdWatch Ireland, the Scottish Ornithologists’ Club and the Welsh Ornithological Society”. Birdtrack switched to OSM.
  • Rihards Gailums wants to “create a working prototype of cloud based service” Drivenet Maps. He describes here that this prototype is necessary for autonomous driving projects.
  • Mobify, a Mapbox reseller, which develops store location maps thinks that it has bought an “enterprise subscription” from Mapbox and therefore does not have to attribute OpenStreetMap as data source (i.e. a violation of OSM license). The map of CricketWireless also lacks the OSM attribution. Mapbox had been criticized about this in the past too. The missing attribution in Pieology‘s map has been discovered and reported on the Talk-us mailing-list on 13th April and has been corrected in the meanwhile. Mikel Maron from Mapbox replied back on this thread stating that “OpenStreetMap attribution is always required — Mapbox enterprise users can elect to remove only the Mapbox attribution. We here at Mapbox are on this.”

Open Data

  • Gluon announces a new JavaFX component named Gluon Maps for map display.
  • Wikipedia initiated a photo contest “Wiki Loves Earth“. The aim is to collect photos from natural monuments and nature reserves. The contest starts on May 1st.

Programming

  • Jochen Topf reports about a new feature in the Osmium tool which can be used to store the actual latitude/longitude values of nodes that are element of a way in a more efficient way and as raw OSM data. Those are optimized for speed when reading.

Releases

Software Version Release Date Comment
MapFactor Navigator Free 2.1.97 2016-04-13 Bugs fixed, better alternate route calculation and more
SQLite 3.12.2 2016-04-18 Some bugs fixed
OSM Buildings 2.4.2 2016-04-20 Updates for CI automation
OsmAnd for iOS 1.2.3 2016-04-21 Bug s fixed
Mapillary for Android 1.8.5 2016-04-22 Mapbox sdk upgrade for in-camera map
OSRM Backend 5.0 2016-04-22 Many API changes and some fixes
iD 1.9.3 2016-04-25

provided by the OSM Software Watchlist

Did you know …

Other “geo” things

  • 23 wonderful historical maps of 23 European cities. (automatic translation)
  • The David Rumsey Map Collection (which we already reported about) now offers to 67,000 historic high resolution maps for download. This short video explains how to use the Georeferrencer, a tool that shows the historic map simultaneously side by side (more or less like map compare) with a recent OSM map.
  • CartoDB and Mapzen have announced a technology and commercialization partnership.
  • The GIScience Research Group at Heidelberg University is offering a position as senior researcher or Postdoc (100%, TVL) in Geoinformatics with a specializion in quality analysis, mining, improvement and integration of data from VGI data sources such as OSM or Social Media.
  • Vox.com writes about the expected billion outlay for map data, which probably belongs to companies like Google etc. to enable self-propelled vehicles.
  • Tagesspiegel.de offers an interesting website for visualizing differences in aerial photography of Berlin from recent days and those of 1928.
  • Geographers at the Friedrich-Alexander University Nuremberg/Erlangen investigate in a project about the democratization of cartography based on OSM and WikiMapia in Israel and Palestine. (automatic translation)

Upcoming Events

Donde? Que? Quando? País
Rennes Rencontres à Rennes 25/04/2016 france
Seattle OSM Seattle Ecuador Mapathon Seattle 27/04/2016 us
Barcelona Mapathon MSF/Missing Maps Barcelona 27/04/2016 spain
Metro Manila Mapping Party: UP Village Quezon City 30/04/2016 philippines
Berlin Hack Weekend 30/04/2016-01/05/2016 germany
Trentino Ala @ library 20:30 02/05/2016 italy
Liguria Genova @ Zenzero, via Torti 20:30 with ALID 02/05/2016 italy
London Missing maps mapathon at the Welcome Trust 03/05/2016 united kingdom
Manila Metro Manila Mapping Party with #MapPHL, Quiapo 07/05/2016 philippines
Bogotá Mapping party – Bogota: Usaquén 07/05/2016 colombia
Lyon Rencontre mensuelle mappeurs 10/05/2016 france
Trentino Besenello @ library 14:00. With support of Portobeseno and the Besenello Municipality 14/05/2016 italy
Kyoto 京都世界遺産マッピングパーティ:第13回 特別編 延暦寺(西塔、横川)(再) 14/05/2016 japan
Clermont-Ferrand ”’State of the Map France 2016”’ 20/05/2016-22/05/2016 france
Rapperswil 7. Micro Mapping Party 20/05/2016 switzerland
Milano ”’State of the Map Italy 2016”’ 20/05/2016-22/05/2016 italy
Brno ”’State of the Map CZ+SK 2016”’ 21/05/2016 czech republic
Rapperswil ”’Swiss PG Day 2016”’ 24/06/2016 switzerland
Salzburg FOSSGIS 2016 04/07/2016-06/07/2016 austria
Salzburg AGIT 2016 06/07/2016-08/07/2016 austria
Seattle State of The Map US 2016 23/07/2016-25/07/2016 united states
Tokyo State of The Map Japan 2016 06/08/2016 japan
Bonn ”’FOSS4G 2016 Code Sprint”’ 20/08/2016-22/08/2016 germany
Bonn ”’Workshops at FOSS4G 2016”’ 22/08/2016-23/08/2016 germany
Derby Derby 23/08/2016 united kingdom
Bonn ”’FOSS4G 2016”’ 24/08/2016-26/08/2016 germany
Bonn ”’FOSS4G 2016 Code Sprint Part II”’ 27/08/2016-28/08/2016 germany
Brussels ”’State of the Map 2016”’ 23/09/2016-26/09/2016 belgium
Metro Manila ”’State of the Map Asia”’ 01/10/2016-02/10/2016 philippines

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 appropiate..

This weekly was produced by Nakaner, Peda, Rogehm, derFred, escada, jinalfoflia, mgehling, stephan75, wambacher, widedangel.

by weeklyteam at April 29, 2016 12:29 PM

"OpenStreetMap.org User's Diaries"

Die digitale Neuvermessung der Welt

Dieser Bericht erschien zuerst in der Tageszeitung "Neues Deutschland"

Die digitale Neuvermessung der Welt

Nepal gilt als Paradebeispiel für den Einsatz des freien Kartenprojektes OpenStreetMap Kerstin Ewald und Noah Wintzer

Jeder, der über einen guten Computer verfügt, kann mitmachen beim Kartenzeichnen im Internet. So können wirtschaftsschwache Länder wie Nepal mit Hilfe von Freiwilligen veraltete Landkarten aktualisieren.

Jugendlicher beim Kartieren (Quelle: Kathmandu Living Labs) Jugendlicher beim Kartieren

Als Nama Budhathoki 2011 nach seinem Studium in den USA in sein Heimatland Nepal zurückkehrte, hatte er sich nicht weniger vorgenommen, als das Land der schneebedeckten Gipfel völlig neu zu kartieren. Seinen Plan wollte er mit Hilfe des Internetprojektes OpenStreetMap (OSM) umsetzen. OSM zeichnet sich besonders dadurch aus, dass es auf die Mitarbeit von Freiwilligen, auf sogenannte »Mapper-Communities« baut und kaum finanzielle Mittel voraussetzt. Nepal ist eines der ärmsten Länder der Welt, das meiste Kartenmaterial stammte noch aus den 80er Jahren. So schien OSM dem Stadtplaner Nama Budhathoki ein perfektes Instrument. Er stand allerdings vor dem Problem, dass 2011 die Mapperszene in Nepal nur aus einer Hand voll Leuten bestand.

Nama Budhathoki bei der Feldarbeit mit OpenStreetMap (Quelle: Kathmandu Living Labs) Nama Budhatoki im Einsatz mit OSM

Sie hatten gerade erst ein paar Wege und Straßen der Hauptstadt in die freie Datenbank von OSM eingetragen. Darum gründete Nama Budhathoki 2013 den Verein Kathmandu Living Labs (KLL). Zu diesem Zeitpunkt hatten Seismologen bereits vor einem starken Erdbeben in Nepal gewarnt. Budhathoki erinnert sich: »Wir wussten, ein Erdbeben wird kommen. Wir wussten, dass Karten für Rettungsarbeiten wichtig sind, also machten wir uns an die Arbeit.«

Er und die Mitstreiter vom Verein KLL eröffneten ein kleines Büro in der Hauptstadt und organisierten von dort aus zahlreiche Workshops, sogenannte »Mappingpartys«. Sie brachten Leuten bei, wie man aus Satellitenbildern gute Landkarten herstellt. Es kamen meist junge Leute, manche, weil sie Spaß an Technik haben, andere, weil ihnen die Erdbebengefahr bewusst war. Oder beides. Die KLL Mitarbeiter gaben Seminare an den Universitäten und brachten sogar Schulkindern das Kartieren mit OSM bei.

Die befürchtete Katastrophe kommt. Im April und Mai 2015 sterben 8800 Menschen bei mehreren Erdbeben, Budhathokis Wohnhaus bleibt zum Glück unversehrt, doch das KLL-Büro wird schwer beschädigt. Die nepalesische Polizei und das Militär beginnen die Suche nach Verletzten. Internationale Katastrophenrettungsteams erreichen das Land, das rote Kreuz belädt Versorgungstrucks, Kriseneinsatzkräfte des kanadischen Militärs bringen Bagger, Bulldozer und große Drucker zum Ausdrucken der OSM-Karten mit. Denn sie alle brauchen gutes Kartenmaterial, um ihre Arbeiten effektiv auszuführen.

Budhathoki erlebt diese Zeit im Arbeitsrausch. Die OpenStreetMapper vom Kathmandu Living Lab arbeiten vom Hof ihres zerstörten Büros aus weiter, um ihnen dieses benötigte aktuelle Kartenmaterial zu liefern. Wie überall herrscht auch bei KLL großes Gewusel. Die Mapper laden sich aktuelle Satellitenbilder des verwüsteten Landes auf ihre Computer und zeichnen Karten. Währenddessen kommt es immer wieder zu Nachbeben. 18 Stunden nach dem größten Beben stellt KLL die Plattform »Quakemap« ins Internet. Hier sammeln sie Hilferufe aus dem ganzen Land und koordinieren die Rettungseinsätze. Internationale Helfer gehen bei ihnen jetzt ein und aus. Einige Tage nach dem großen Beben zieht das KLL-Team in ein verlassenes Restaurant, dann in eine Schule um. Strom kommt von kleinen mobilen Solaranlagen.

Schon eine Stunde nach dem großen Erdbeben vom 25. April läuft die erste Meldung über die E-Mail-Liste der internationalen OSM-Gemeinschaft: »Die Nachrichten sind noch ein bisschen unklar, aber Kathmandu scheint schwer betroffen zu sein.« Umgehend schalteten sich die Freiwilligen in die Arbeit von KLL mit ein. Überall auf der Welt saßen nun Mapper an ihren Computern und zeichneten von aktuellen Satellitenbildern ab, was sie dort ausfindig machen konnten: passierbare und unpassierbare Straßen, eingestürzte Brücken, kaputte Häuser oder Flächen, auf denen Hubschrauber landen könnten. Sie suchten auch nach Schleichwegen, die die Rettungshelfer unverzüglich zu zerstörten Bergdörfern bringen könnten und zeichneten diese in die Karten ein. Kurz nach der Katastrophe fehlte in vielen Orten Trinkwasser, weil durch Erdrutsche Quellen zerstört oder unzugänglich geworden waren.

Fast 9000 ehrenamtliche Mapper trugen zum Nepal-Projekt kurz nach den Erdbeben bei. Ihre Hilfe koordinierten sie über das HOT Netzwerk, das Humanitäre OpenStreetMap Team. Dieses hatte sich nach den Erfahrungen des verheerenden Erdbebens in Haiti 2010 gegründet. Damals hatten erstmalig OSM-Mitglieder aus aller Welt geholfen, das haitianische Krisengebiet zu erfassen. Sie wurden damals noch stark durch organisatorische oder technische Probleme behindert. Deswegen entwickelte HOT in der Folgezeit Instrumente, die es nun Tausenden »Schreibtischmappern« ermöglichen, gleichzeitig an einem Projekt zu arbeiten. Diese verbesserten Werkzeuge kamen dann später in Nepal zur Anwendung. Sie dienen auch der Qualitätskontrolle, denn nicht alle freiwilligen Mapper können gleich richtig gut kartieren.

So gehen heute erfahrene Mapper alle Daten noch einmal durch, bevor sie einen bearbeiteten Abschnitt »auf grün stellen«. Sie können so Fehler beheben, wie der, an den sich der OSM-Experte Marek Kleciak erinnert. »In ganz Nepal gibt es keine einzige Autobahn. Doch irgendwo auf einer Bergspitze war da plötzlich eine auf der Karte. Jemand hatte einen Feldweg als Autobahn markiert.«

Die OpenStreetMap-Aktivisten beteiligen sich aber nicht nur vom heimischen Schreibtisch aus. Die Heidelberger Geografiestudentinnen Melanie Eckle und Carolin Klonner veranstalteten an ihrer Uni Mapperpartys für Nepal. Eckle kannte sich in dem Land aus, sie hatte zuvor ein Praktikum bei KLL absolviert. Gerade sind die beiden Studentinnen und ihre Gruppe Disastermappers wieder im OSM-Einsatz. Denn nach dem aktuellen Erdbeben in Ecuador brauchen die Hilfskräfte auch dort dringend Kartenmaterial. Darum luden Eckle und Klonner ihre Mitstudierenden letzte Woche zum »Mapathon« für das südamerikanische Land ein. »Jeder kann kommen!

Neue Leute können erste Erfahrungen im Mappen sammeln und von erfahrenen Mitgliedern lernen«, erklärt Melanie Eckle. Auch die Aktivisten vom Kathmandu Living Labs unterstützen tatkräftig die Arbeiten in Ecuador, wo die lokale OSM-Community noch nicht gut aufgestellt ist.

Doch auch in Nepal ist das große Ziel noch lange nicht erreicht, deshalb wendet sich Nama Budhathoki an die Mapperwelt: »Hier gibt’s immer noch viel zu tun, wir freuen uns über jeden, der uns beim Kartieren unterstützt!«

by Enve at April 29, 2016 09:49 AM

April 28, 2016

"OpenStreetMap.org User's Diaries"

Adding sport= tags to leisure=pitch.

I am presently targeting Australian 'leisure=pitch' that don't have a 'sport=' tag and trying to identify the sport and add the tag. Why? Well I added the osmwiki page for 'sport=netball' having found these to be missing or incorrectly tagged while some 1,300 were in the data base. I then went around adding them, or correcting incorrect entries where found. In doing this I noticed that in these areas sports grounds were poorly represented or tagged. Using the web to look for netball courts resulted in a doubling of the number of netball courts in the OSM data base! So how to find these areas where sport is not represented as good as it could be? I chose to use taginfo and search for leisure=pitch and sport!= (tags with leisure-pitch and no sport) while this works .. there are a lot of them ... meaning the work spreads over several days and I was repeatably looking at the same things! So i chose to add the tag 'fixme=sport=?' to the places where I could not identify what sport was played there. The search can now be 'leisure=pitch and sport!=* and fixme!=*' and that removes the places I have looked at.

I have now done NSW! I am targeting Melbourne, then country Vic. Then ... S.A./Qld.

This has increase the quantity of sports ... netball is now around 3,800! Increases for AFL, touch_football (I have yet to add a osmwiki page for this), cricket, basketball, softball (yep .. needs a osmwiki page too) and discus, hammer throws and long and triple jumps (again .. needs a osmwiki pages! ).

by Warin61 at April 28, 2016 10:14 PM

OSMBlog (German)

Wochennotiz Nr. 301

19.04.2016-25.04.2016

Logo

Ergebnis einer taktilen Karte die mit Hilfe einer kleinen CNC-Fräse erstellt wurde 1

Mapping

  • Benutzer Cetusek hat das JOSM Plugin CAD Tools repariert, das zudem dank der Bachelorarbeit von Anamaria Rotariu neue Funktionen und weitere Entwicklung erfahren hat.
  • Benutzer Siba Dolem sucht nach Möglichkeiten, in 3D Gebäudesockel und Treppenaufstiege zu mappen. Marek schlägt vor, die S3DB Definition mit seinem Konzept zu erweitern.
  • Im Mapbox-Blog zeigt Eliane Joyo Meneses, wie Mapbox seine Mapper noch effizienter mappen lässt – mit Gaming-Mäusen und mehreren JOSM-Fenstern gleichzeitig, damit man nicht mehr einen Hoch-/Herunterladevorgang abwarten muss.
  • Martin Weilandt fragt auf der internationalen Talk-Transit-Mailingliste, wie man mit Bushaltestellen ohne Namen umgehen soll.
  • Benutzer Skinfaxi möchte wissen, wie man mit örtlich veränderten Postleitzahlen umgeht.
    Er kommt zu dem Schluß: In Schweden muss man fragen!

Community

  • Die Firma Indie Manufacturing hat im Verlauf ihrer bisherigen Mapping-Tätigkeit für OSM einige gute Vorgehensweisen herausgearbeitet und im Blog beschrieben.
  • OpenCage Data Blog spricht mit Simon Poole über OSM in der Schweiz.
  • Pratik Yadav beschreibt den Open-Peer-Review Prozess innerhalb der Firma Mapbox. Das System zur Kontrolle der Mapping-Qualität steht nun für jedermann zur Mitwirkung offen.
  • Bernhard Weiskopf fragt auf der Mailingliste Rhein-Neckar, ob man als örtliche OSM-Community bei Monnem Bike (denglischfreies Hochdeutsch: “Mannheim Fahrrad”) bei einem Projekt mitmachen wolle. Das Jahr 1817 gilt als Erfindungsjahr des Fahrrads durch Karl Drais.
  • Aktuell läuft eine Crowdfunding-Kampagne der OSM-Gemeinschaft in Benin, um für eine Fläche von 275 km² in Cotonou (Westafrika) hochaufgelöste Satellitenbilder für OSM-Zwecke zu erwerben. Die Kampagne endet am 1. Mai 2016 und es fehlen nur noch wenige Euros zum Ziel.
  • Stijn Rombauts ist Mapper des Monats in Belgien.

Importe

  • Nakaner schlägt einen mechanischen Edit in Niedersachsen vor, der lcn=yes und rcn=yes entfernt, wenn es im Rahmen eines Imports von den Radwanderkarten 1.75.000 im Jahr 2014 ergänzt wurde. Siehe dazu auch Talk-de und die englischsprachige Dokumentation im Wiki.

OpenStreetMap Foundation

  • Der OSMF-Vorstand kündigt sein Vorhaben an, eine(n) “administrative assistant” als Teilzeitstelle auszuschreiben. Das wäre der erste Festangestellte der OSMF, etwas, was manchem Mitglied nicht gefällt. Im Rahmen der darauf folgenden Diskussion auf der OSMF-Talk-Mailingliste werden kritische Fragen nach der immer noch fehlenden Transparenz des OSMF-Vorstands gestellt.
  • Der Satzungsentwurf für den in Gründung befindlichen britischen OSM-Verein kann kommentiert werden. (Link zu Google Docs)

Veranstaltungen

  • Bewerbungen um eine Förderung (Stipendium) zur Teilnahme an der SotM Brüssel sind ab sofort möglich.
  • Rory McCann schlägt auf der Mailingliste Talk-ie vor, einen Vortrag über Townlands.ie auf der State of the Map in Brüssel zu halten. Welchen Vortrag hältst du?

Humanitarian OSM

Karten

  • Citee Fashion bietet bedruckte OSM T-Shirts mit deiner Lieblingsstadt an.
  • [1] Jakob Flierl erstellt mit seiner CNC-Bohr- oder Fräsmaschine taktile OSM-Kartenauschnitte aus Holz. Er hat dazu touch-mapper verwendet und eine Anleitung auf GitHub veröffentlicht, möchte das ganze aber gerne auf vollständig freie Software umstellen.

switch2OSM

  • Andy Mabbett berichtet auf Talk-GB, dass die Vogelbeobachter von Birdtrack, einer Vereinigung mehrerer britischer und irischer Ornithologenverbände, wohl neuerdings OSM nutzen.
  • Richard Gailums stellt die Entwicklung von hochpräzisen Karten im Open Source Bereich vor, die unabdingbar sind für selbstfahrende Fahrzeuge. Ein Prototyp der “DriveNet Maps” verbindet OSM mit offenen LIDAR Daten in 3D-Ansicht und versucht damit noch fehlende Sensortechnik zu umgehen.
  • Der Mapbox-Reseller Mobify, welcher Filialkarten für US-amerikanische Ketten anbietet, ist der Meinung, dass er eine “enterprise subscription” (Geschäftskundenlizenz) bei Mapbox gekauft habe und deshalb keine OSM-Namensnennung erforderlich sei. Bei der Pizza-Kette Pieology wurde die fehlenden Quellenangabe am 13. April auf Talk-us gemeldet, aber mittlerweile ergänzt, bei CricketWireless fehlt sie immer noch. Mapbox war in der Vergangenheit kritisiert worden, nicht genug Wert darauf zu legen, dass die eigenen Kunden die ODbL einhalten.

Open-Data

  • Die Firma Gluon kündigt eine neue Komponente für JavaFX namens Gluon Maps an, mit welcher sich beliebige Kartengrafiken darstellen lassen können.
  • Der von Wikipedia initiierte Foto-Wettbewerb Wiki Loves Earth rund um Naturdenkmäler und Naturschutzgebiete startet zum 1.Mai.

Programmierung

  • Jochen Topf berichtet über eine geplante Funktion im Programm Osmium, um die eigentlichen Koordinaten von Punkten, welche einen Weg bilden, effektiver in den gängigen Dateiformaten für OSM-Rohdaten zu speichern.

Releases

Software Version Release Datum Änderungen
MapFactor Navigator Free 2.1.97 13.4.2016 Fehler beseitigt, bessere alternative Routenberechnung und noch einiges mehr
SQLite 3.12.2 18.4.2016 Einige Bugs wurden beseitigt
OSM Buildings 2.4.2 20.4.2016 Updates für CI -Automation
OsmAnd for iOS 1.2.3 21.4.2016 Fehler beseitigt
Mapillary für Android 1.8.5 22.4.2016 Mapbox sdk upgrade für in-camera map
OSRM Backend 5.0 22.4.2016 Viele API-Änderungen und einige Fixes
iD 1.9.3 25.4.2016

bereitgestellt von der OSM Software Watchlist

Kennst du schon …

  • … die Wetterkarte der OpenSeaMap?
  • … das Tool Places!? Endungen von Ortsnamen werden in vielen Ländern gröber oder feiner als Muster visualisiert, abhängig von der Häufigkeit des Vorkommens. OSM-basierend und flexibel einstellbar. Näheres findet sich auf Github.

Weitere Themen mit Geo-Bezug

  • Die David Rumsey Map Collection (wir berichteten) bietet 67.000 hochaufgelöste historische Karten zum Download an. Dieses kurze Video erklärt, wie man den Georeferencer benutzt. Es ist ein Werkzeug, das die historischen Karten der Sammlung nebeneinander (mehr oder weniger wie bei Map Compare der Geofabrik) mit einer aktuellen OSM zeigt.
  • Der Online-Dienst mac20.de spekuliert darüber, ob demnächst Karten von AppleMaps nicht nur auf mobilen Geräten, sondern auch in jedem Internetbrowser verfügbar werden.
  • Die Firmen CartoDB und Mapzen haben eine geschäftliche Partnerschaft in den Bereichen Technologie und Kommerzialisierung angekündigt.
  • Das Land NRW startet eine mehrsprachige Android-App für Flüchtlinge, damit sich diese nach der Ankunft in Nordrhein-Westfalen schnell und unkompliziert zurechtzufinden können. Die dazugehörige OSM-Karte (nur DE) ist leider nicht ganz aktuell und auch ohne Lizenz-Hinweis. Dies wurde aber schon bemängelt.
  • Am Geografischen Institut der Universität Heidelberg ist eine Stelle als “Senior Researcher / PostDoc : Analysis, Enrichment & Integration of VGI, OSM, Big Spatial Data” ausgeschrieben.
  • Vox.com schreibt über den zu erwartenden Milliarden-Aufwand für Kartendaten, welcher wohl auf Unternehmen wie Google etc. zukommt, um selbstfahrende Fahrzeuge zu ermöglichen.
  • Spiegel-Online hat die Projekte im aktuellen Verkehrswegeplan der Bundesrepublik Deutschland visualisiert und bietet den Lesern eine Abstimmungsmöglichkeit, um deren Dringlichkeiten und Popularität zu ermitteln.
  • Der Tagesspiegel bietet einen interessanten Vergleich von aktuellen Luftbildern der Stadt Berlin mit Bildern aus dem Jahr 1928.
  • Geographen der FAU Nürnberg/Erlangen untersuchen in einem geförderten Projekt die Demokratisierung der Kartografie anhand OSM und WikiMapia in Israel und Palästina.

Wochenvorschau

Wo Was Wann Land
Bremen Bremer Mappertreffen 25.04.2016 germany
Düsseldorf Stammtisch 27.04.2016 germany
Urspring Stammtisch Ulmer Alb 28.04.2016 germany
Essen Stammtisch 30.04.2016 germany
Berlin Hack Weekend 30.04.2016-01.05.2016 germany
Rostock OSM Stammtisch Rostock 03.05.2016 germany
Stuttgart Stammtisch 04.05.2016 germany
Landshut Landshut Stammtisch 10.05.2016 germany
München Stammtisch München 11.05.2016 germany
Berlin 95. Berlin-Brandenburg Stammtisch 12.05.2016 germany
Dresden Stammtisch 12.05.2016 germany

Hinweis:
Wer seinen Termin hier in der Liste sehen möchte, trage ihn in den Kalender ein. Nur Termine, die dort stehen, werden in die Wochennotiz übernommen. Bitte prüfe die Veranstaltung in unserem öffentlichen Kalendertool und korrigiere bitte die Einträge im Kalender, wenn notwendig.

Diese Wochennotiz wurde erstellt von Michael Reichert, Peda, rogehm, TheFive, Manfred Reiter, escada, malenki, Marc, stephan75, wambacher.

Flattr this!

by Wochennotizteam at April 28, 2016 09:02 PM

"OpenStreetMap.org User's Diaries"

Cluj Napoca Someseni

I just finished to mapping buildings Someseni in Cluj Napoca

by kokeinyesdi at April 28, 2016 04:23 PM

Cidades Brasileiras Não Mapeadas

Ao fazer algumas edições pelo interior do Brasil, pude perceber a grande quantidade de cidades e outros agrupamentos urbanos que ainda não possuem informações na base de dados do OpenStreetMap, mostrando apenas a relação de seus limites, importada anteriormente do IBGE. Alguns outros, possuem alguns elementos dentro do território municipal como rios, ferrovias ou rodovias federais, mas o núcleo urbano está completamente vazio. Até mesmo cidades de importância regional infelizmente ainda se encontram nessa situação, como era até recentemente o caso de Quixeramobim com seus 75.565 habitantes no interior do Ceará, por exemplo.

Pensando em uma forma de localizar estes casos, cheguei à conclusão de que poderia interseccionar os dados das vias residenciais com os limites municipais, chegando assim a resposta desejada.

Vias Residenciais

A escolha das vias residenciais (residential), se deu por ela ser a menor classificação hierárquica de uma via para veículos motores em um ajuntamento urbano, e também por oferecer uma maior abrangência, o que não aconteceria se fossem utilizadas vias minoritárias (unclassified) ou terciárias (tertiary), que já poderiam estar mapeadas.

Em algumas raras situações, em agrupamentos muito pequenos e lineares ao redor de uma via de maior classificação, não encontramos vias residenciais, mas este não é o caso. Todo município, por sua complexidade administrativa e organização territorial, possivelmente possui mais de uma via em seu território.

Fazendo a análise

O primeiro passo é a obtenção dos dados para a análise. Nesta tarefa, utilizei os extratos regulares do Geofabrik para o Brasil. O arquivo zipado oferece sete arquivos shapefile, cada um abrangendo um grupo de feições. Abri a camada Roads (rodovias) no QGIS e solicitei a divisão dos tipos de vias, criando um shapefile que continha apenas as feições das vias residenciais.

Realizei também uma consulta ao overpass Turbo que obtém todas as relações dos municípios em território nacional. Exportei para o QGIS e converti os polígonos em shapefile para agilizar o processo.

Sobreposição das ruas residenciais sobre o território dos municípios brasileiros

Basta agora solicitar uma Consulta Espacial no QGIS (localizada em Vetor > Consulta Espacial) e configurar para que: sempre que a camada de municípios contiver uma feição da camada de vias residenciais ele criar uma seleção.

Após a conclusão da análise, o QGIS vai selecionar todos os polígonos de municípios que contem vias residenciais em seu território. Excluí estas feições selecionadas para deixar apenas os municípios que não continham vias residenciais e salvei o shapefile.

O último passo é abrir a Tabela de Atributos da camada dos municípios e copiar os dados para uma planilha, para ter uma relação completa dos municípios que possuem mapeamento deficitário na base do OpenStreetMap.

Resultados

Após filtrar as planilhas, mantendo apenas os dados relevantes, pude adicionar estes dados na Wiki, para que a comunidade possa usar esta relação de municípios.

Dentre os 5.570 municípios brasileiros, um total de 420 foram encontrados sem ruas residenciais em seu território, o que denuncia falhas no mapa a serem corrigidas. Algumas vezes todas as vias foram classificadas como minoritárias (unclassified) e na grande maioria dos casos, o município realmente não possui qualquer tipo de dados. Mesmo que o Mapbox cubra algumas das áreas onde o Bing não está disponível, infelizmente alguns municípios ainda não possuem quaisquer tipos de imagens aéreas disponíveis, contando apenas com as camadas de vias do IBGE.

A tabela com os resultados pode ser vista aqui, na Wiki do projeto. Essa tabela separa os municípios por Unidade Federativa e os organiza de acordo com sua população (extraída dos dados do OpenStreetMap), e também contém um link da área que leva para o mapa principal do OSM.

A planilha original, em formato XLSX, pode ser vista aqui, no Dropbox.

Mapa de calor mostrando a localização dos municípios no Território Nacional

by LucFreitas at April 28, 2016 04:17 PM

OpenStreetMap & the Ordinance Survey

A patch local to me (now called Stonebridge Park) proved to be a white triangle on the map (Stonebridge Road at the base, Beacon Hill Rise on the town side & Saint Matthias Road on the 3rd side). It was part of the St Anns-wide redevelopment at the end of the 1960s. 50 years later poor, lost souls were still being discovered in the shrubbery. Like English versions of WW2 Japanese soldiers they had wandered into the new estates & promptly got lost. Most were quickly discovered & gently led out to be rehabilitated in one of the local insane asylums, but some went feral & survived only by being fed by children from the estate (I know this is true as I'm sure I saw a film about it).

Something had to be done. The council renamed the whole triangle of land & gave a contract to Keepmoat to re-redevelop the whole area. That post-dates our Bing imagery. I've tried to contact Keepmoat, but they have not returned my calls nor emails. I've had better success with the GIS department at the local council.

SK53 (Jerry) gave me a contact to a councillor who is Executive Assistant for Housing and Regeneration, and he passed my email on to the council GIS Team. I got an email back from Laura, saying that my request “sounds very interesting”. Nottingham Council have their own OpenData initiative, but the Ordinance Survey stranglehold on British GIS Data causes Laura to believe that they cannot release anything to OSM.

I spoke to Laura today, and she will approach the OS to discuss releasing info to OSM. I spent most of yesterday collecting info + links which I put in an email to her. I thought that others may find that info useful, so here is the content:

I hope to speak to you on Thursday 28 April 2016. Here is some background info + links on OSM relevant to the topic of your recent email to me, but first the section of that email possibly most relevant to this discussion:-

On 26/04/16 16:48, (GIS Team) wrote:

We also publish individual developments as open data http://www.opendatanottingham.org.uk/dataset.aspx?id=28 with address information but no lat / long / easting / northing as requested by yourself. We are currently restricted on this. We are happy to investigate this further and look to include additional spatial information into the information we already publish but we will need to have discussions with Ordnance Survey about this information as it will be derived from their products and so need permission to publish.

Looking at the building outline / development boundary information data that you have requested as Open Data there are likely to be restrictions to publishing with unrestricted re-use as the data is derived from Ordnance Survey Mastermap products where Ordnance Survey would own the intellectual property rights for this. On many datasets we are starting to publish spatial information even if it is derived from Ordnance Survey data through a legal gateway called ‘presumption to publish’. However we think that the information requested is likely to fall outside of this due to the volumes of data that would be released within a small area, which would not be permitted by Ordnance Survey as this would basically be providing people with a copy of their product. We would welcome the opportunity to talk to you about this, and with further details may be able to assist further so below are my contact details.

You will find detailed licence info on the OSM website:

The relevant extract for using OSM data (which includes the maps) is as follows:-

You are free to copy, distribute, transmit and adapt our data, as long as you credit OpenStreetMap and its contributors. If you alter or build upon our data, you may distribute the result only under the same licence ... The cartography in our map tiles, and our documentation, are licensed under the Creative Commons Attribution-ShareAlike 2.0 licence (CC BY-SA).

It should not be necessary to say this, but there is zero (that is £0.00) cost in making use of that data. You will not, therefore, be surprised to hear that OSM maps are increasingly being used by a vast range of bodies worldwide.

In order to be able to maintain the CC BY-SA licence, it is essential that any data imported/entered into the OSM map comes from a non-copyright source. In America all government map data is copyright-free, but in the UK, of course, the OS have maintained a tight grip on the crown-jewels of the financial/copyright map-body. Thus, almost all maps in the UK could NOT be used to derive data for OSM entry. OSM polices this requirement most carefully & has a take-down procedure in place; and yes, it has been used, deleting all data entered by the infringers.

In spite of the paragraph above, Ordnance Survey data has been made available to OSM (see the Licence page, url above). In short, this has been brought about by a change on April 1, 2010 (and following) in the license that the OS apply. Here are relevant URLs then relevant extracts of that info:-

OSM started in the first place because of the difficulty that one cyclist in London had with the very high cost of using OS data (see the 'History' url as at top). OSM considers that it is (at least in part) responsible for causing the OS to seriously adopt the Open Government License. Here is the brief history:

  • Dec 2009 to March 2010: Government consultation: http://wiki.openstreetmap.org/wiki/Ordnance_Survey_Consultation
  • April 1st 2010: 1st release; under Open Database License 1.0 (but not Postcode data) (explicitly clarified with OS that this meant that OS data could be used in OSM)
  • 2010: Postcode data now released under open licence
  • February 2015: OS OpenData license replaced with Open Government Licence (OGL) v3 (no change to OSM usage, as v3 explicitly allows such use)
  • 24th March 2015: OS OpenMap, OpenRivers, OpenRoads, OpenNames, StreetView

From all of the above, it should be that there is zero problem in releasing this info for use in OSM.

by alexkemp at April 28, 2016 03:21 PM

School Edit Tracker

The "UK quarterly project" for the start of this year, was about schools. It was pretty popular and quite a few mappers got involved in editing and fixing up schools data in the UK. How many? Well...

I fired up my old "edit tracker" code to track School edits during the first quarter, and now it's frozen as a record. So we can see 362 people did a total of 15548 edits to UK schools data during the quarter.

And here's the rankings, showing that Robert Whittaker takes first prize with 1339 edits. The rankings also show a classic long tail curve. Not too uneven, but still with almost half of our 362 people only making a single school edit. But that's OK. Getting lots of people chipping in a little bit is a good thing.

That's why I created a new display called "New Starters". I hoped this might get people interested in the challenge of how to spread the word and get more people joining in.

Linked from there, and from the rankings, I made another new display for each user. So here's the school edits for the 'Harry Wood' user for example. We can see edits over time, so we can see my rather meagre contribution. We can also see that Robert Whitaker had a spurt of activity towards the end, while Yorvik Prestigitator seemed to take a break at the end, (and actually this allowed Robert to sneak ahead and take the top spot!)

screenshot

This involved a bit of drawing of bar charts in javascript. Last time I did something like this, I generated static images using google charts API, but this time I wanted the interactive mouse-over effect which we see with so many web charting libraries these days. I just had to find a free open source one... which presented quite a big sorting the wheat from the chaff challenge. I chose c3.js, which was quite easy to get working for this. Sometimes the width of my bars goes a bit wrong. Look at the way they overlap on the this chart for example. Maybe someone can spot what I've done wrong. The source code for all this display logic is on github.

Behind the scenes, there's my "diffreader" logic. As the name suggests, it reads the diffs (OpenStreetMap minutely diffs) Some ruby, a bash script, and sticky-tape, doing all the fuddling around with diff files, sequence files, parsing XML badly (really badly Naughty Harry), and eventually writing a nice SQLite DB file full of school edits meta-data. That's all unchanged from back in the days of wimbledon edit tracking, and the Big Baseball project, but one big thing I had to add was the ability to isolate UK edits. Easier said than done because the diff XML will sometimes contain nodes, which have latitude and longitude... sometimes not. I think if you edit a school by only changing its tags, then it doesn't. So I had to make some other calls in some circumstances, hold onto some data which was read in from earlier in the file, and generally apply more sticky-tape to my code. ...Quite a lot of hassle just to decide if an edit is in the UK.

It all works pretty well though. I was hoping to point people at it a bit more (tweet about it etc) to whip up some competitive excitement in the closing few days of Q1 ...but then I was busy on a beach in Brazil :-) Actually I don't have a way to stop it automatically, so I had to remember to shut down the cron job at midnight UK time on March 31st, but as it happened I was also busy online getting an april fools blog post put together at the time!

The "UK Quarterly Project" is a thing the mappa-mercia guys have been running for quite a while now on their blog. I think Brian Prangle has been the main man behind them. There's been quite a few. I rejiggled the 'UK quarterly project' wiki page to list them all. But I think after all the excitement of editing schools, we've not announced a topic for Q2 yet (unless I missed it). I'm keen to see if it will be something I should unleash this edit tracker tool on again.

by Harry Wood at April 28, 2016 10:46 AM