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Iraq , Basrah

Posted by علي تويوتا on 15 October 2016 in English (English)

abu khasib

Location: طريق ابو الخصيب, Abu al Khasib, Basra, Iraq

Mapper of the Month: Sus (susvhv) from Belgium

Posted by escada on 14 October 2016 in English (English)

Who are you ?

Sus Sus is my computer related nickname. In the early days of the PCs I always had problems with the ç of François, my real name (smiles). I was born in 1933, (I leave it to you to calculate my age) in Brussels and I was a technician at the Belgian Nuclear Research Center or SCK in Mol, where I live at the moment. I was sent on early retirement during a restructuring at the SCK. I have been enjoying home life for over 25 years since that moment. When I went to school, there were no computers. Luckily, I got the opportunity at work to spend time to learn about hardware and software and get familiar with microprocessors and microcontrollers. Until now, I have bought all my desktop computers as parts and assembled them myself. The last one runs Ubuntu. My laptop runs Windows 10. Unlike the desktops, I buy my laptops. The hardware for the development for microprocessors we used at work was very expensive in the early days. A few years after my retirement, I noticed that a microcontroller, such as the ATMEGA8 costed only a few euros and they were freely programmable from the serial port (now from USB) of a PC. Today, in the Internet of Things area, one can program Arduino computers with Wifi modules (Nodemcu, ESP8266) to control all kinds of peripherals. I have one running that measures the temperature in the veranda and sends the data to the net, from where I can read it. I also have a 1 terabyte Owncloud server running on a Raspberry Pi. You know, those bankcard-sized computers developed for children (smiles)

Where and when did you learn about OpenStreetMap ?

My history as a pilot of ULM aircrafts, rally driver, hiker and geocacher brought me in contact with all kinds of maps and made me see the usefulness of GPS systems. Those systems requires maps, preferably free maps. I have an OpenStreetMap account since 2008, but I was using the maps already before that time. There were plenty of empty areas on the map back then. I only started mapping in 2011. The initial hesitation was big, especially because I was doing it on my own. Accidentally there was a power pylon in my street where the power line ended in OpenStreetMap. I continued that line as far was possible. When that power line became visible on the map, the ball kept on rolling. I started recording hiking paths, taking pictures of house numbers, surveying new streets and their names, started mapping land use etc. I was busy filling the empty areas !

Are you using OpenStreetMap yourself ?

I have the maps of the whole of Europe on my Garmin Dakota 20 GPS and the Android smartphone, and update them frequently. When we now make a trip with the bus, I often know better where we are than the driver. We no longer travel with car. I also have the ski pistes of Andorra in my pocket. On the smartphone with 32 GB memory, I use OsmAnd, Locus and Oruxmaps. I also tried Vespucci but found it hard to key in the house numbers in full daylight and with sweaty fingers.

How do you map ?

Luie Zetel The only mapping I do at the moment is from my lazy chair. As editor I only use JOSM. When JOSM was a memory hog, I switched to other editors, but most problems from the early days are fixed and it contains more and more useful features, a.o. the links to aerial imagery for Flanders. I visited a Missing Maps party in Antwerp, and I also "filled a few squares" when Jorieke recently asked for help for a HOT task. It took some time to adapt. I sometimes have difficulties to follow the rules, but this does not always help the overall quality of the map.

What do you map ?

Nowadays we have access to aerial imagery of much better quality. Furthermore we are allowed to use AGIV and CRAB data for house numbers. This is a big improvement compared to the low quality imagery from Bing. I use the tool developed by Sander for importing house numbers. I work mainly around Mol, where I live. I try to improve the houses, streets, land use and house numbers. I keep going until all buildings are mapped. Depending on the weather, it can take from a few weeks to months before I finish a post code area.

I try not to do the same type of mapping for a long period. I also hate relations [associatedStreet relations], especially when I try to fix naming errors.

What is your biggest achievement

That I can keep up (smiles)

The question should have been what is your biggest mistake ? The "Q" in JOSM (making square corners) have given my several bad experiences, e.g. when I accidentally selected a residential area without noticing because the whole area is outside the screen. Then during upload, you notice that you have modified thousands of points, but there is no way back. The only way I found so far is to grab the smartphone with OsmAnd and reposition the nodes of the area. This can take several days when it is a complete town or village (note: We have informed him about the reverter plugin for JOSM after reading the first draft of the interview). The good things is that the land uses get updated to the current situation. I also split them in more manageable areas. It is remarkable how many trees have been cut, how many new residential areas are build and how many meadows are used as farmland nowadays. I had similar problem with a high voltage line. That took also quite some time. My apologies when I accidentally removed some tags. The line is now also cut into pieces. I could not find all pylons back, so when you find an isolated one, please remove it. That I did not receive complaints about my mistakes, is a small miracle. I assume others have encountered the same problem, because nowadays the residential areas are mapped with smaller polygons. Or am I mistaken ? It would be nice that the "Q"-key in JOSM gets the same warning one receives when a large number of objects is moved. An alternative is a counter that keeps track of the new or updated nodes. This would allow one to avoid large uploads or that one has to throw away a lot of work in case of unrecoverable mistake.

Why do you map ? What motivates you ?

It is nice to walk along the paths that you have mapped before and improve them where needed. (smiles). I support everything open and free for a long time, it is a useful way to spend your spare time and you stay young. This is my form of SUDOKU. Maybe it is also because I want to leave something behind and help humanity a bit. But lets not get philosophical.

Do you do anything else besides mapping ?

I frequently read the messages on the mailing list to understand other people's views, but I no longer plan or maintain anything on the long term. I do admire the work from all the programmers and what they accomplish with the data. But I do not know how they do it.

How can we extend the OpenStreetMap Community ?

You should not count too much on the people from my age group, I have tried, but the results were disappointing. The problem is that huge amounts of data have to be entered and that it requires a good knowledge of computers. Most of them find it too difficult to get started. The current group of people that retires will contain more candidates, as they are already familiar with computers. I think we have to look at the students, and point them to the great database that is freely available to them and which they can use to test their skills as a programmer, with one caveat: the data has to be added first.

I did succeed in convincing a geography teacher to give his students a couple of exercises based on OSM, but he's already retired now. There's a lot of mailing list activity on (note: a social network website for retirees), also about computers and Linux. Maybe some of the younger pensioners among you want to start a mailing list there. But I won't do that.

What is the strongest feature of OpenStreetMap for you?

That it goes beyond boundaries and helps to improve the world.

What is the biggest challenge for OpenStreetMap ?

To stay pure and not attract "pirates". Luckily it is free and there is no direct gain for hackers. However, I sometimes wonder whether is can be misused when I am mapping in dangerous zones, e.g. in the area of Bamako.

How do you stay on top of OpenStreetMap news ?

Via the Belgian mailing list.

Do you have contact with other mappers ?

Years ago, I met Lodde1949, while we both were mapping in Meerhout . He used JOSM and I was using Potlatch, and that had weird results. After mutual agreement, I started mapping elsewhere, but he recommended JOSM to me. "A house in 2 or 3 clicks". I made the switch to JOSM then, but that was not without effort. Out of curiosity I once visited a Missing Maps party in Antwerp. I also participated in some hangouts. For the rest I do not have a lot of contact with other mappers. I know some around Mol, but they contribute infrequently.

Sus' profile by Pascal Neis

To round up, is there anything else that you want to mention.?

Can I insist that no one simply removes the work of others, even when it is sloppy ? Deleting something, might mean that you loose a mapper. The current aerial imagery is much more detailed and better aligned than ever before. Even I have sometimes the tendency to wipe out something and replace it with a new object, because that goes faster. But I will only do that when I have added the item myself. In JOSM, you can easily use CTRL-H (show history) and that might bring back memories. I am sometimes annoyed when I see objects that were added to a sloppy background or details that do not seem useful to me. Why did the mapper not improve the background first ? Allez, I am whining again (laughs)

Be a part of OSM

Posted by Ataur Rahman Shaheen on 14 October 2016 in English (English)

I am Ataur Rahman Shaheen. A executive member of Red Creseent Youth, Dhaka College Unit. Last august A OpenStreetMap training was organize by unit. I was so much excited about that training. I was mapping others map and use regularly. Our unit leader Sawan Shariar tell me that OpenStreetMap is better then others map. I was not appreciate with him. How can a map better than others map? But my thought was changing when the training begun. At the beginning of training, Ahasanul Hoque, pioneer of OSM Bangladesh greeting us and inform us about OSM by his small speech. Then the training was started with very informative lecture about map by Atikur Rahman atik. Manjurul Islam train us about the basic of OSM. when Sawan Shariar start his session about details of OSM, my thought was totally changed about OSM. Now it was in my front that OSM is better then others maps. Because we can put many many detail information in OSM what we can’t in others map.

When we go for field work i was totally surprise. Because by field working the map will going to be an unmistakable, complete and very informative map of a area. It was just awesome. I think a man can know everything of a area and also can guide another man if he use OSM of that area even he/she was not resident of that area. I think it is the big achievement for those mapper who mapping that area.

In the training the most interesting part for me was field work. Because there was some funny experience. Bangladeshi people was so curious about anything. They ask about our activity and appreciate us. Some people thought we are government officer or municipal officer. They complaining their areas problem. Some people thought we are police special force or DB police and they was so scared. It was so laughable.

After completing the training my opinion is Yes…! OSM is better then others map. Not only better, it is the best.

Đang nghĩ

Posted by Trangand Quan on 14 October 2016 in Vietnamese (Tiếng Việt)

Lần đầu có được cảm giác chiến thắng bản thân.....

PK (Point Kilométriques en France)

Posted by DF45 on 14 October 2016 in French (Français)

L'Opendata officiel a mis en ligne la liste des points kilométriques en France.

L'info m'est arrivée via le blog ... d'OSM Maroc ! Un premier import dans QGIS montre les routes et nationales à deux voies. C'est encourageant. Une analyse plus détaillée indique que c'est plus ... varié. Beaucoup de routes on un PK gauche et un PK droite ... mais pas tous. Certaines ont un seul PK de type I (indéterminé ?) ou G ou D. D'autres PK n'ont carrément pas de coordonnées. Après un test de correction dans un tableur, on va se tourner vers un import dans PostGreSQL afin de pouvoir rejourer les corrections d'élimination des PK incorrects et de faire une moyenne Gauche/Droite.

More Mysterious Markers

Posted by alexkemp on 14 October 2016 in English (English)

Mysterious Marker #1

Another couple of these very odd markers marked with a capital V (or in this case SV): (MM#2; MM#3). All are stored on the OSM map as a “boundary_marker”, even though I'm certain that they are not. But what are they?

At the corner of Moore Road & Bennett Road; inscription is “SV”, then either “NCWW” or “NGWW”:

Marker at junction moore rd + bennett rd

At the corner of Dale Avenue & Rowland Avenue; inscription is less clear:

Marker at junction dale avenue + rowland avenue

The two markers are on a North/South axis, although that could be pure co-incidence.

Location: Porchester Gardens, Arnold and Carlton, Gedling, Nottinghamshire, East Midlands, England, United Kingdom


Posted by Sawan Shariar on 14 October 2016 in English (English)


State of the Map : Some BoF sessions

Posted by escada on 14 October 2016 in English (English)

Until now, I did not find the time to report on some of the Birds of a Feather sessions in which I participated during the State of the Map in Brussels last month. A Birds of a Feather (BoF) is an informal session which can be filled in by the presenters as they wish. I visited two BoF sessions on Sunday, one about PT-assistent and one about Kartotherian.


PT-assistent is a JOSM-plugin for the validation and correction of public transport routes. It was developed during a Google Summer of Code project, mentored by Polyglot and implemented by Darya. Hence, it was not surprising that they lead the session. Polyglot is a long time member of the Belgian community and is responsible for a lot of public transport mapping in our country. He started by introducing some of the problems he has with maintaining public transport (bus and tram) routes and the repetitive correction work for routes running over the same OSM ways.

Since someone in the audience was an avid public transport mapper in the Dortmund area, Darya started the demonstration of the plugin in that area. And low and behold, several problems where detected. We tried to find solutions for the problems, but for some one needs to do a local survey. Others were easily fixed, either manually or by the plugin.

The main power of the plugin is that a fix (done manually or automatically) can be repeated for all other routes that have the same problem in the same spot. One comment was that some of the automated fixes was too much "magic", but even without it, the plugin is great for locating problems.

The plugin only works for public transport routes of version 2. The people interested in the plugin know what this means.

Great tool to put in your belt ! And great presentation as well, thanks Polyglot and Darya.


The session was lead by Yuri Astrakhan, the lead developer for Kartotherian. This is the framework that is used to deploy all the components needed to make maps for Wikimedia. The session started very technical by describing the software architecture behind their server. I found this very interesting, probably because of my software developer background :-)

There was a lot of interaction with the audience, which included some people that wanted to setup a similar cluster of processes and computers themselves. But it seems that the documentation of the framework is not ready yet for primetime.

At the end of the session many interesting examples where shown using this technology, or better the technology that is configured by Kartotherian. It is great to see what can be accomplished in combination with SPARQL from the Wikidata Query Service. (A nice video tutorial about SPARQL in the Wikidata context by Ewan McAndrew and some examples).

You can check out some examples from the BoF here and here.

What can we, OpenStreetMappers do in the meantime ? Add wikidata tags to objects, because that is the glue between all those components.

Maybe one day, we will be able to combine OverPass and Wikidata SPARQL queries. Imagine what we can do with all that information...

You felt the passion of Yuri for this project in his presentation. And he knows his stuff. It was a pleasure to follow this session.

I do hope others will be inspired by this little write-up and provide some insight in what was presented during the other Birds of a Feather sessions.

Bob Dylan’s World

Posted by ImreSamu on 13 October 2016 in English (English)

Bob Dylan’s World

In 2016, Dylan received the Nobel Prize in Literature for "having created new poetic expressions within the great American song tradition".

a bonus:

A map of every street, town, and city Dylan has ever sung about.

On Being Trumped

Posted by mtc on 13 October 2016 in English (English)

Well, unfortunately, it finally happened. While mapping a small residential street, I saw a truck zoom down the street and make a sudden stop next to me, where I was walking on the sidewalk. Two older guys kept asking whether they "could help me", but they looked like they were ready to start trouble. This redneck patrol was making it clear that they did not like strangers in their suburban neighborhood. I am not sure what they thought about the road being a public right of way, but they drove off saying that I should watch out. Kind of put a downer on my day.

Should you envision a dirty drifter typing this, know that I was just heading into work with a jacket and tie, and had a haircut the day prior. Sadly, the people around here buy property on a road with a cul-de-sac, with hopes of never seeing anyone other than their five other neighbors and the post man. I have always sensed people being unhappy to see me walking to the end of their road, but this is the first time someone went out of their way to say something. Maybe this isolationism says something about the politics of the day.

Hurricane Matthew

Posted by Jomals on 13 October 2016 in English (English)

Hurricane Matthew relief efforts, Polygon editing

OSM map-a-thon nr. 5 at Open Labs Hackerspace, Tirana

Posted by Leeturtle on 13 October 2016 in English (English)

OSM map-a-thon at Open Labs Hackerspace

Following the positive outcome of the last map-a-thon organized from members of our hackerspace in Tirana, we are already planning the next event where the growing community in Albania will focus on editing OpenStreetMap in Tirana. In addition we will work on the organization of our presence at Software Freedom Kosova Conference in Prishtina in a couple of weeks, where the community will be present with an info booth. By the way if you are at SFK feel free to join my presentation about Wiki Loves Maps, a project very close to my heart. Before starting the map-a-thon we will also talk about Mapillary and its ambassador program.

There is also a Facebook event available here. Join us if you are a new or old contributor. See you at the hackerspace.

Location: Pjetër Budi, Tiranë, Tirana, Tirana County, 1004, Albania

100€ for a notifications listings page

Posted by mikelmaron on 13 October 2016 in English (English)

Working on the challenge laid out by @Zverik to add subscriptions to diary comments was fun! Now I want to suggest another -- an overview of all notifications across This would include diary entries, comments, and notes.

Ideally this page would list subscriptions, in order of most recently commented.

One complexity, Notes have a different subscription workflow than diary entries and comments. With Notes, the original poster and any commenter are notified of comments. There's no way to subscribe otherwise, or unsubscribe. We may want to, in the future, modify that to follow the same workflow.

As laid out by Zverik :"The offer is not indefinite: the PR must be submitted until the 15th of November and merged before the 15th of December. And yes, there might be a competition, in that case OWG will decide the winner by merging a pull request."

Visualisation des voies appelées "Boulevard" : comparaison Paris, Lyon, Marseille. "La dernière va vous étonner..."

Posted by Romainbou on 13 October 2016 in French (Français)

J'ai fait mes débuts avec OverPass-Turbo,

l'appli web qui permet de faire des requêtes avancées sur les données OpenStreetMap.

Ayant vécu 2-3 ans à Marseille, je me suis étonné quand j'y étais de voir que nombre de petites ruelles mineures et allées dans les quartiers périphériques, étaient déclarées de "boulevards". Souvent ce sont des allées résidentielles à sens unique, parfois même très étroites, plutôt du genre de ce qu'on taguerait sous OSM en "highway=service" :)

Alors j'ai eu envie de voir un peu ça...


"boulevards à Paris Paris, oui on s'en doute : les grands boulevards sont bien là. Ils sont relativement bien organisés, du fait de leur histoire. Le mot boulevard était avant utilisé pour dénommer des rajouts aux fortifications des remparts d'une ville, dans le but de mieux les protéger après l'invention des... boulets de canon. Je laisse la suite du récit à Wikipedia qui dit absolument bien les choses :

En 1670, Louis XIV décida de reporter la défense du royaume sur la frontière avec la constitution du pré carré et de faire de Paris une ville ouverte. L'enceinte bastionnée et les boulevards sont détruits et transformés en nouveaux cours carrossables plantés d'arbres qui deviennent rapidement des lieux de promenade à la mode. La réalisation de cet aménagement des anciens boulevards n'était pas terminée en 17603. Les Parisiens ont donné à ces nouveaux cours le nom de boulevard.

À l'origine, un boulevard est donc une « promenade plantée d'arbres sur l'emplacement d'anciens remparts » (définition donnée en 1803). Il permet ainsi de contourner une ville de l'extérieur (comme le fait une ceinture périphérique, à Paris, le boulevard périphérique, les boulevards des Maréchaux construits à l'emplacement de l'enceinte de Thiers). Puis, par extension, un boulevard désigne une large voie urbaine. (source Wikipedia:Boulevard)

Tout ceci correspond presque exactement à la carte des enceintes de Paris à travers les âges !
image qui marchait hier; à l'adresse :

Voir légende ici sur Wikimedia Commons (auteur sous pseudo "Paris 16", licence CC-BY-SA-4.0) Encore plus d'infos sur wikipedia sur les boulevards parisiens


"boulevards" àLyon Ici, on comprend mois ce qu'il se passe, et pas d'infos trouvées sur le web et wiki après une rapide recherche sur l'histoire des boulevards lyonnais. Sans doute datent ils d'une époque postérieure. On sent des raisons purement urbanistiques à l'établissement de ces boulevards : grands axes de communication reliant différentes parties de la ville éloignées les unes des autres. Les boulevards périphériques à l'est, les saignées dans certains quartiers pour aérer les centres périphériques (boulevard de la Croix-Rousse, des Belges, des États-Unis).


"boulevards" à Marseille À Marseille, là, ça change : on en voit clairement plus, sans organisation qui se dégage à grande échelle. Des quartiers entiers ne sont composés que de boulevards, pourtant de petites ruelles. Quand j'ai twitté ces 3 cartes, une personne m'a répondu qu'à Marseille fût un certain temps, les administratifs n'auraient pas hésité à renommer des voies en "boulevards", pour que les habitants payent plus d'impôts locaux, l'impôt ayant été fonction de l'intitulé de la voie habitée. Je n'ai pas trouvé de confirmation ou de chose allant dans ce sens, mais il est clair que l'usage de ce mot n'es pas le même à Marseille que dans les autres grandes villes françaises. On m'a signalé aussi ce phénomène dans les rues de Nice, que je n'ai par contre pas encore cartographié.

Remarque technique : Pour la requête, j'ai le regrêt de ne pas avoir conservé son code sous format texte. De mémoire, je n'ai sélectionné que les chemins ("way"), sans rechercher les points ("nodes") ou aires ("areas"), et j'ai fait une requête sur la balise "name=", en prenant garde de ne pas respecter la casse, sans préciser si le mot devait se trouver forcément en début de name.

new arabic font

Posted by mustafakamil on 13 October 2016 in English (English)

new arabic font on the map is awesome ...

Kort læggning i efterårsferien.

Posted by Ash Nan on 12 October 2016 in Danish (Dansk)

Jeg har planer om at gå ruten sortemosen - Jyllinge af langs åsystemmet. Til dette bruger jeg kort og kompas. Samt field papers.

Det er enligt en tur for at undersøge forholdene for Ørreder og Odder. Men der udover handler det om at fremkommeligheden til fods og cykel blive undersøgt.

N 55.7057741991229274 - E 12.312068939208986 til N55.78090528185305 - E 12.089874744415285

Location: Viermose, Lille Rørbæk, Frederikssund Kommune, Region Hovedstaden, Danmark

OpenStreetMap Carto release v2.44.1

Posted by pnorman on 12 October 2016 in English (English)

Dear all,

Today, v2.44.1 of the openstreetmap-carto stylesheet (the default stylesheet on has been released. Also, v2.44.0 was released last month without an email, so this email includes changes in both.

v2.44.0 has been rolled out to the servers, but v2.44.1 has not yet.

Major changes are

  • Rendering of restricted access roads and paths significantly changed
  • Changed to use Noto fonts for all languages

Other changes in both versions include

  • A code of conduct adopted, based on the Go code of conduct
  • Adjustments to city wall rendering
  • Revised low zoom place rendering
  • Render both house name and number if address has both

Thanks to all the contributors for this release, in particular Lukas Sommer, Hsiao-Ting Yu and vholten for work in debugging complex font issues with the Noto CJK fonts.

For a full list of commits from both releases, see

As always, we welcome any bug reports at


Posted by hxai on 12 October 2016 in Japanese (日本語)

ちょっと資料を見つけたので、豊田市道の名称と管理番号がわかる。 さて、どうしようか 本気で書き込むにはマンパワーが足りない。

Short history of name editing in MAPS.ME

Posted by Zverik on 11 October 2016 in English (English)

Many mappers agree that simple and accessible editors are hazardous: the simpler editor is, the easier it is for a horde of newbies to submit wrong data. This was a main argument against Potlatch, and then iD. Now MAPS.ME built-in editor allows for changing tags and adding nodes with just a few clicks for any of our tens of millions of users. Which of course has led to a number of questionable edits.

Screenshot of the first editor with name field

The first field in any place card is name. When we released the editor in April, it was a single field for editing the "name" tag. You changed a name — the new tag value was uploaded to the map.

Complaints started coming almost immediately. Turns out, some tourists were renaming attractions to their language for easier navigation. If you look at the Questionable Edits wiki page at the time, you'll see that names in wrong languages are the most worrying kind of edits.

How do we fix that? Well, finding the language of the name from its characters could work for some languages (like Chinese vs. English), but not for most. Adding a warning that users should type only what's written on a plate is better, but it was there from the start, and nobody reads instructions. Removing the field completely, like some suggested (along with the rest of the editor) could solve the issue, at expense of the better map.

Screenshot of the editor with local names

In August, we prepared a list of native languages for each country. For example, in Finland it's "fi" and "sv", in Estonia it's a single "et". India has 11 languages, though its regions have less. We took this from the Wikidata, which may be incomplete and sometimes wrong. If you have a minute, check this list for errors. Languages should be ordered from most-used to least-used.

And with that, we completely disabled editing of the "name" tag in the 6.3 release. Mappers were asking, and we delivered. Now users were presented with one or two native language name fields, plus an English name and a name in a user's language. For example, if you are a russian in Helsinki, you'd see editors for "name:fi", "name:sv", "name:en" and "name:ru". This way it was less likely Chinese names would be entered into e.g. name:en. And since the default style on uses only the default name, changes from wouldn't be shown there.

Except for new objects: when a user creates a POI and fills any of the native language fields, that name gets copied into the "name" tag. But not when editing. Which started causing another kind of error: when a shop had changed its name, we would get old name in the "name" tag and a new name in "name:lng". It displays properly in, since we favour localized names, but not on other maps. And some mappers started complaining about equal values for "name" and "name:lng".

Screenshot of the latest editor with native name field

With the 6.4 release, we adjusted the workflow again. Keep in mind that our goal is to prevent accidental mistakes by users, not by experienced mappers who know how the application works. For the latter, we added a special language: "Native for each country" at the very bottom of the languages list. That's right: it is a way to edit the "name" tag directly.

When creating a POI and filling a name in a local language, that name will be not copied, but moved into the "name" tag, so you won't see duplicated values in tags. In my opinion, that's a drawback, but still, that's what mappers requested.

Now the complicated part: when there is only one local language for a region, like in Estonia or US, a user has a chance to change the default name. First, all empty name fields for local languages and English are pre-filled from the "name" tag. If a user have edited names in both languages, this would mean the user knows what they are doing, and the app will put the local/English/any other (whichever is not empty) name into the "name" tag.

Screenshot of MMWatch with ambigous name changes

This still means you will get discrepancies between "name" and "name:lng" values for countries with more than one local language, or with users who don't have time to edit all the fields. Know how to make name editing more safe and effective? Please share it here in the comments: maybe we could make it more transparent or even more smarter.

Please add population numbers to places

Posted by ff5722 on 11 October 2016 in English (English)

Population numbers turn out to be pretty important for rendering places at the correct zoom level. Since 'town' or 'city' is the highest possible qualification for any large urban centre (whether a sleepy 100 000 population suburb or a 10 million population metropolis) there may be many of these places very near each other. On lower zoom level, the renderer has to make a choice on which cities to show. Without any population numbers, no decision can be made, thus no names are rendered.

The default Carto layer does take population into account, and it can be seen that it is a major factor in deciding which place is shown at lower zoom levels.

In green are cities I've recently added population number to (number is brackets is the urban population). These are all rendered as long as the labels fit nicely without overlapping. It is not strange that the desert town of Hami is labeled at this zoom level. It should be, because it is a major stop along this transport corridor.

However, Hangzhou and Xuzhou are not labeled in this case. For Hangzhou it can be argued that the label would overlap with Shanghai, but for Xuzhou this argument cannot hold.

Between 兰州 (Lanzhou) and 天水 (Tianshui) lies 定西 (Dingxi). As you can see here I've also added this city's population number. And although the label would fit, it is not rendered. I have not looked into the code of the Carto renderer, but my guess would be that either it's population of under 500 000 would not make it important enough, or that the other cities are too close by (Hami is a lot more isolated). For completeness, Lanzhou and Tianshui have a population of a few million.

Also good to note, if you zoom in to level 6, you get a little dizzy from all the city names. Apparently here the renderer shows anything that is a town, and because almost all lack population numbers, all are shown.

It seems that in India for example, most cities do have a population number included, so if you zoom through the levels there, the map looks much more usable.

Location: X301, Bao’an, Luonan County, Shangluo City, Shaanxi, China
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