Users' diaries

Recent diary entries


Posted by ma_b on 20 August 2018 in German (Deutsch)


Too Much Information

Posted by SomeoneElse on 20 August 2018 in English (English)

I'm in the process of changing so that zoom level 13 can still be used as a "route planning" layer but walls, hedges and ditches don't get in the way. This wasn't originally a problem, but people have since mapped lots of fences, hedges,walls and ditches, and it can be difficult to see footpaths at that zoom level now. Here's a screen showing half new tiles, half old ones:, after and before

That corresponds to here on the site and here in OSM. The new version will probably be rolled out in a week or so's time. Other zoom levels will be unchanged - you'll still see hedges and ditches a couple of zoom levels earlier than with OSM's "standard" style, and paths will still be legible 2 or 3 zoom levels earlier.

Santa's Christmas delivery route revealed

Posted by Bence Mélykúti on 20 August 2018 in English (English)

Data visualisation meets children's curiosity. I immersed myself in geoinformatics to find out how postal services in the USA, in Germany and in Hungary carved their countries into mosaics of postal code areas. Visually striking maps emerge from the opaque depths of numerical data. Do enjoy and please share.

OpenStreetMap provided me with the data for Germany and Hungary. What a resource! I learnt a lot about querying the database. Many thanks to the designers, programmers, contributors!

Валидатор садовых участков

Posted by CupIvan on 20 August 2018 in Russian (Русский)

Сделал отображение садовых участков для переноса статусной части в отдельный тег. Попутно обнаружилось, что некоторые отмечают придомовые территории как садовые участки, надо исправлять.

Bugun uye oldum

Posted by Forumkoloji on 19 August 2018 in Turkish (Türkçe)

Merhabalar bugün uye oldum site hakkında pek bir bilgim yok.

Umarım eğlenceli olucak.

Location: منطقة حائل, Suudi Arabistan


Posted by Forumcuuu on 19 August 2018 in Turkish (Türkçe)

Güzel bir seyahat olucak berline doğru.

Joined the training session today with unique mappers team @TLCCF

Posted by Mecix on 19 August 2018 in English (English)

It was an amazing experience.. Talked about mapswipe and also shared the mapswipe app to interested persons.. It was fun #Youthmappers#Letgirlsmap#Uniquemappers#Microgrant2018#Mapthedifference..


Posted by sawaGani on 19 August 2018 in Japanese (日本語)

Magic Earthと云ふAndroid appliが有るのですが、これにOSMが使はれてゐます。 試しにnaviを起動してみたところ、ヘンなrouteを提案され、OSMを見ると道が途切れてゐました。よく通る道なので早速修正。 流石に國道ではありませんでしたが、車通りは多い所なので驚きでした。

posting screen shots (rendered in Microsoft Paint) in "New Diary Entry"

Posted by Robert Copithorne on 19 August 2018 in English (English)

This is a followup to my previous question, for which I did receive responses, to help me to develop a better understanding of OpenStreetMap.

I want to post a screenshot saved as a jpeg image to a new diary entry, and attach an explanation of the problem illustrated in the screenshot. Is there any way to do this that doesn't require posting to a third party application, then posting a link in the diary entry to the third party application?

I don't have any third party applications that I can post the jpeg mage to, save Facebook. If I use Facebook, the link allows people to see other parts of my site; which isn't acceptable.

I have a question to pose to the OSM contributors body regarding rendering of natural=wood areas, which I think would be better described with a screenshot of the rendered map.

I realize that OSM is powered by volunteer labour, and I highly appreciate it, I'd just like to find out how to get an answer to my question.

Specifically, some of the areas that I have tagged in the Alberni Valley as natural=wood, show up as dark green on the rendered map; whereas other, adjacent areas, with exactly the same tagging, do not show up as dark green but are essentially blank, nor do the labels attached the unrendered areas appear. If I could post a screen shot, this anomaly would be a lot easier to understand.

This problem has just recently appeared, and through no action of mine, as far as I know. I refer to the rendered map frequently, to view how my edits (using JOSM), appear.

Some people say, don't map for the renderer, but aside from using the rendered map as a means to control my edits, I have numerous times shown the rendered map to others, to help them understand OSM, and perhaps be interested enough to become contributors. There are few people in the Alberni Region of Vancouver Island who are interested enough in contributing to make a concerted effort to upgrade the map, for the benefit of all users, and I would like to encourage others to become contributors. The rendered map is a valuable resource, and has to be considered a the final product.

When people see the extent of the resource extraction roads and other land use detail, current and otherwise, that show on the rendered map they are usually enthusiastic to have more such detail developed, and might possibly become contributors, or provide me with on the ground edits which I can incorporate using JOSM.

I expect there is a large number of technically oriented people, who use a variety of mapping applications, to produce specific maps for specific purposes, with OSM as a base, but that is not my objective. I am trying to develop a map focused on the Alberni Region of Vancouver Island which will help people to understand what the area is like, in terms of land use, and provide them with a guide for navigating, using OSM rendered maps, the many resource based roads in the Region. I expect to be able to simply refer them to the OpenStreetMap website and let them see for themselves the mainly industrial roads and openings in the forest, which define the land use in the Region. Anything more complicated will simply be self-defeating.

posting screen shots (rendered in Microsoft Paint) in "New Diary Entry"

Posted by Robert Copithorne on 19 August 2018 in English (English)

Will this work: link to Facebook document?


Posted by Edward OJ on 18 August 2018 in English (English)

Wow! the experience our trainees got from us day before yesterday was awesome. The training was coordinated by our well experienced and a professional Mr Sunday Victor who is currently a Cordinator of UNIQUEMAPPERSTEAM, Nigeria. Trainees were trained on how to select a task and carry out mapping of a disaster areas using Task.HOTOSM. The trainees equally learnt some basis of GIS and Remote Sensing during the training which make them even became more excited as the training became a fascinating one. I took the advantage of the training and mapped out some areas prone to disaster and other environmental hazard in Nigeria and my heart was full of joy. Therefore I humbly thank the openstreetmap founder for creating a platform that has become a major tool for geospatial data generation which helps in responding to disaster and Lessing the impacts of it across the world.

Mistake in map alignment. I'm sorry, can I revert that?

Posted by dhiegov on 18 August 2018 in English (English)

Well, on my first day as an editor, I made some mistakes.

It's right there on the wiki, very clearly: Imagery can be wrong. But I didn't though of that when trying to fix this lot of roads which seemed oddly aligned with Bing imagery. I'm sorry.

I think there should be more advice about that on at least ID's walkthrough (a link like the above one maybe). I had no idea that the map could be disaligned with the aerial image.

There's some way to revert a changeset?

Delhi's longest bus route, Himachal Pradesh, counting POIs, and whom does OSM help?

Posted by contrapunctus on 18 August 2018 in English (English)

I haven't written a diary entry in a while, so this one's like a mash-up of multiple entries 😉 Bear with me.

A week or two ago, I set out to survey a bus route that has long intrigued me - the "Outer Mudrika Service" aka "बाहरी मुद्रिका सेवा", or "OMS" for short. Like all "Mudrika" buses, it takes a circular route - but in this case, a big circle of Delhi. As of the 6th of August, I had mapped it as serving 84 stops - the average bus route serves at most 40, and this was not even it's final form...I mean, I'd only mapped around half of it 😛

The survey turned out to be more grueling than I had anticipated. OMS starts and ends at Uttam Nagar, so I headed there (also by OMS, adding stops along the way I had missed in the night the last time). At Uttam Nagar Terminal, though, hardly anyone seemed to know exactly where to board it. I stood around an hour, not daring to sit lest I miss it when it comes (the fact that it's a somewhat low-frequency route didn't help). Figured I'd eat my packed lunch, but the place had an abundance of flies. Twice I walked between the terminal and the first bus stop where I suspected I'd actually find it, almost a kilometer away.

On the second time, at around 16:00 hours, I actually succeeded in boarding one. Wasn't ideal - it would terminate halfway through, at Anand Vihar. Better than nothing, I figured.

Turns out, it was a blessing in disguise. Not only was even half of its route fairly long (particularly when you're hungry and tired from standing so long! [1]), some manner of procession near Burari brought it to a halt at the apex of a flyover for some fifteen minutes. Atleast I got to eat 😛 By the end of it, my phone was running low on juice and I myself was thirsty and out of water. Called it a day at Anand Vihar and took a Metro back home.

Fortunately, the rest of the route was already mapped, albeit based on sightings and deduction. The result was 63 new bus stops, and Delhi's longest mapped bus route, serving over 160 stops -

Some time ago I went on a trip to Himachal Pradesh. Seeing the state of the map there - particularly the roads - has given me a lot more work to do. I recorded GPS traces for unmapped roads, but I resolved to improve the accuracy of (the very roughly mapped) existing roads first - not realizing how much work that is. Enough to carry on for months 🙂

(ThorstenE in #osm mentioned spline support for OSM. That would be amazing, and would elegantly reduce all this work by multiple orders of magnitude 😔)

I've counted how many bus stops I've added, and now I happened to wonder how many POIs I've added in general, so...

type:node and (shop=* or amenity=* or leisure=* or public_transport=*) and user:contrapunctus in India (hope I haven't missed anything major) tells me I've added a total of 2301 POIs in India

Of these 5 are in Ahmedabad, 8 are between Delhi and Chandigarh, 271 are between Chandigarh and Himachal Pradesh, and 2,017 are in Delhi.

These include -

  • 920 bus stops
  • 168 fuel stations
  • 134 public toilets
  • 111 ATMs
  • 102 banks
  • 65 restaurants
  • 60 places of worship
  • 51 fast food joints
  • 34 cafes
  • 32 convenience stores (or departmental stores, as we call them here)
  • 28 schools
  • 26 clothing shops
  • 24 chemists
  • 21 dustbins
  • 20 dairy stores
  • 16 salons
  • 14 car dealerships
  • 11 dentist's clinics
  • 10 car repair shops
  • 9 each of benches, gyms, and taxi stands
  • 7 each of alcohol shops and ice cream parlors
  • 5 each of bakeries, clinics, kindergartens, and police stations
  • 4 each of bookshops, drinking water, and embassies
  • 2 bus stations

Hard to believe - have I really added so much already? Of course, I admit that these are really just the tip of the iceberg...

I've often been asked by people who are close to me and know of my OSM work - who uses OSM? Does your mapping help anyone? It's hard to ingrain the infinite value of open data in their minds, but a more interesting answer has slowly been emerging - me! It helps me.

On our road trip to Himachal, I had tried to map as many fuel stations on the way to Janjehali. On the way back, when our car was running low on fuel [2], I was able to know exactly how far away we were from the nearest fuel station. The patchy data coverage there didn't deter the sole user of OsmAnd offline maps in the group, either.

When I need to know what Metro exit I need to take, taking a look in OsmAnd is easier than consulting the signs. (Google Maps doesn't have this, AFAIK.)

When I went to a bank which I thought was on street A but happened to check OsmAnd and realized in time that it was on street B.

Google Maps itself has failed me many times - telling me there's a swimming pool for what turned out to actually be a pond in a park, telling me there's a chemist 3 kilometers away from where it actually was, and other such comical moments.

And while OSM doesn't yet have the POI-completeness to match, it's already exceeding my own memory's record of local knowledge - storing and reminding me of things I've long mapped and forgotten. All it needs - as far as I'm concerned - is

  • multi-modal PT routing, real time traffic information, snappier performance, and better search in OsmAnd,
  • (not so importantly) the ability to modify tags of ways and areas in OsmAnd, and
  • support for Bezier curves/splines in the database. [3]

Lastly, I now seem to have hit the 700 changesets mark. Yay me. 🙂

[1] I tend to not sit when surveying a bus route - the seats in the main, low-floor cabin are all reserved for women or the elderly or persons with disabilities, and if I sit in the high-floor rear section, I often miss the names at bus stop signs.

[2] the only way to get fuel in Janjehali is through the 'black market', which is neither cheap nor assured of purity

[3] Of course, bigger adoption in India would be nice, too...

Deambule - random walk

Posted by thbz on 18 August 2018 in English (English)

Have you ever wondered where you will get to if you walk at random in a city ? Will you go far away or simply wander around in your neighborhood? It's a well-known mathematical problem, usually applied in my country to people who have drunk too much.

A few days ago I thought it might be fun to watch that drunkard walk on Openstreetmap. Some quick coding with Leaflet, Overpass, Nominatim, etc., produced something I called Deambule. Random path in Paris Every time you click on Walk, the drunkard, or let's say the robot, walks 50 steps (where a step means going from one OSM node to the next OSM node on a way). At every corner it chooses one of the ways at random (trying to avoid directions he took very recently).

This is perfectly useless, and yet I think there's something fascinating about it: it's fun when the robot explores new neighborhoods and very boring when it cannot escape a public garden it has already visited several times. I might have called it Flâneur or Dérive, but the reference to Walter Benjamin or the Situationist was a little presomptuous for a robot that doesn't even know why it is walking.

You may ask the robot to walk more on the same path, or you may start other paths around the world. Remember that all paths are shared by everybody. At the time of this writing, on path #1 the robot (green marker) has almost come back to its starting point (blue marker) after walking more than 300 km inside and outside Paris. Random path in Paris

After a few hours, 15 new paths have been created, presumably by people who saw this diary entry. I removed those which do not contain any nodes except the starting point (I assume they were probably created by mistake).

Wow!!!!I am the First Girl Child to Map in OSM Nigeria,Anyone else !!!?Thanks to #UnqueMappersTeam

Posted by Chidera Nkwocha on 18 August 2018 in English (English)

I guess I am the first girl child to map from OSM Nigeria community and else where.Its fun and exciting to map with mapswipe,identifying buildings in zambia on a satellite imagery.I needed a phone from uncle victor to play games,and he actually gave me to do so.But later,he mentioned that the phone is used for mapping,I became eager to learn .I got into it and discovered it was like a game giving me scores for good swipes made.I mapped and scored .... The next day I joined uncle Victor to the office where UniqueMappersTeam members were mapping and i could not see myself being idle ,watching while they map.Maybe,If I map,uncle victor would give me a phone or get me shawama.So i watched the video on how to map,and watched Blessing mapped and she helped me to learn how to map,then .I started mapping carefully,using her OSM account. Later,when Blessing Oshoma left,Emmanuella wanted me to continue mapping using her OSM account and I said no,I need my own account created and wow ,she helped to create an acount for me and there I go mapping on OSM!!! Any one there,,,,,,,in high school junior mapping on OSM in Nigeria and else where..? I want to know,otherwise,I guess I am the first girl child of 9 years of age to join this community to map for people in need.Thanks to mum for giving me the opportunity to spend my summer vacation in Port Harcourt with uncle Victor,the team coordinator of UniqueMappersTeam,Nigeria As I go back to Owerri today ,I am going to share with mum and others about UniqueMappersTeam and OSM.And I will also share with my fellow students as I resume for Junior secondary school,class-1 Thanks to Uncle Victor,Aunty Onyi,Blessing,Emmanuella and UniqueMappersTeam for giving exciting time this holiday period.

OpenStreetMap Carto release v4.14.0

Posted by kocio on 17 August 2018 in English (English)

Dear all,

Yesterday, v4.14.0 of the OpenStreetMap Carto stylesheet (the default stylesheet on the OSM website) has been released and rolled out to the servers. It might take a couple of days before all tiles show the new rendering.

Changes include

  • Added text-repeat-distance for waterways
  • Added text-repeat-distance for railways
  • Added icon for leisure=bowling_alley
  • Added icon for leisure=outdoor_seating
  • Added icon for leisure=bird_hide
  • Added icon for shop=video
  • Added icon for shop=paint
  • Added icon for shop=massage
  • Increased casing width of tertiary road on z12
  • Standard text halo for fitness_centre and fitness_station
  • Updated Docker images definitions
  • Small documentation updates

Thanks to all the contributors for this release.

For a full list of commits, see

As always, we welcome any bug reports at

Mappning i närområdet

Posted by Nidron on 17 August 2018 in Swedish (Svenska)

Har raderat snabbmatstället bredvid Coop som har lagts ner för någon månad sedan. I övrigt försöker jag mappa ut en ö i ån nedanför mig. Men problemet är att hela ån bara är en smal linje , vilket inte stämmer med verkligheten. Ön kom till därför att en gång i tiden gick det ett avloppsrör rakt ut i ån och där utloppet var bildades en ö. Idag är det fastland, fast ingen verkar äga ön. Har lagt ut trall som gångstigar, men det känns ändå ostadigt att vistas på ån då allt i princip är gungfly. Tanken var att bygga en hel skulpturpark på ån, som svämmar över varje år. Ungefär som ett Atlantis. Men så långt kom jag aldrig.

Location: Norrsundet, Gävle kommun, Gästrikland, Gävleborgs län, Norrland, 81730, Sverige

No more broken multipolygons in the standard style on

Posted by imagico on 17 August 2018 in English (English)

A fairly big but silent change in the map rendering infrastructure has been completed in the last days which is going to have a significant effect on mapper feedback through the standard style map.

Multipolygon error in the standard style here

Technically this is just a system and software update. This however includes a new osm2pgsql version which fundamentally changes the way multipolygon geometries are assembled. This change in osm2pgsql already happened more than a year ago but osm2pgsql had not been updated on the OSMF rendering servers since then.

Before this change standard style map rendering tried very hard to salvage whatever could be salvaged from a broken multipolygon geometry. This sometimes led to strange results but usually something was shown in some way even for invalid geometries. This led to mappers often being not very diligent about multipolygon geometries - as long as it shows up in the map it is fine. For data users not using osm2pgsql (like for example my low zoom map demo) this was a big problem because if they rely on valid geometries these invalid multipolygons are all unusable - yet customers of course expect them to be usable since you can see them in the map.

Long story short: That the standard map rendering should not try to be most tolerant about multipolygon validity but rather be more strict about it to give mappers better feedback about their mapping has been a demand of many people for a long time. This has now finally happened.

Osm2pgsql now uses libosmium for building multipolygons which means it is tolerant about

  • duplicate nodes
  • duplicate segments between nodes
  • noded self intersections (i.e. rings intersecting with a node at the intersection)

It however is strict about

  • non-noded self intersections
  • open rings

Quite a few people have noticed during the last week or so already that there are a few prominent gaps in rendering where there previously were features shown. Many of these have already been fixed quickly because of this improved feedback. This is not yet very visible in the multipolygon error numbers because these count errors and do not consider their visual impact and what has been fixed quickly is primarily a few high impact cases. But there is hope that with this change in rendering and the resulting improvement in feedback to mappers about errors the increase in the number of errors in multipolygons might be stopped or at least be slowed significantly.

Multipolygon error in the standard style here

There are plenty of prominently visible gaps in the map due to broken multipolygons still waiting to be fixed of course. If you work on fixing such errors it is also a good idea to take the opportunity to split larger geometries into smaller features which can be maintained more easily and are less prone to breaking.

Multipolygon error in the OSMI here

You can find these errors not only through missing geometries in the map but also through the OSM Inspector

Hussain Street, Rasool Park Lahore

Posted by Adeel Shafqat on 17 August 2018 in English (English)

Hussain Street, Rasool Park Lahore

Location: Samanabad, Lahore, Lahore District, Punjab, Pakistan

posting screen shots (rendered in Microsoft Paint) in "New Diary Entry"

Posted by Robert Copithorne on 17 August 2018 in English (English)

How do I post screen shots in new diary entries?