Users' diaries

Recent diary entries


Posted by honesty2 on 18 September 2018 in Abkhazian (Аҧсуа)

flooding has been a major environmental problem to rivers state , and its coastal communities. this has impacted negatively on the state, disrupting activities and causing many homeless and vulnerable to water borne diseases.flooding is an annual occurring phenomenon here in rivers state,and one reason is because of its low elevation......join UNIQUE MAPPER TEAM today and lets map out states and communities vulnerable to flood.

Finding reverted changesets on OSM

Posted by manoharuss on 18 September 2018 in English (English)

Defining reversion

Through a healthy community and map-gardening many of the critical issues get noticed and acted upon immediately. A revert is absolute and removes changes indefinitely from the map. Repairs are more manual, often done with a mix of reversion and manual fixes, which are harder to track. osm-revert-changesets npm module is aimed at tracking absolute reverts and works well at 1:1 (changeset to changeset) reverts.

Reversion rules used

Currently, the module uses a starting set of 2 rules to identify reverted changesets.

  • Deletions of created features

    • If a feature gets deleted at 2nd version. The edit that created the feature at 1st version is reverted.
  • Feature state is reset

    • If Nth version of a feature is reset to N-2th version of a feature, then modifications that were done at N-1th, were reverted.


npm install osm-revert-changesets

const revertChangesets = require('osm-revert-changesets'); revertChangesets('62632427').then((list) => console.log(list));

Log [ '62629726' ]

This is the input used - DWG repair changeset And this is the changeset that got reverted

Use cases

  • Reverted could be a flag for changesets in OSMCHA. Reverted changesets could be marked as bad automatically and they don't have to be reviewed again saving review time. I ticketed this feature request in OSMCHA at

  • For large reverts conducted by DWG, this module could be used to return a list of reverted changesets to understand extent of damage, accounts involved and map area affected.

  • When changesets get reverted, the edits are removed from the map indefinitely. This module could be used to track amount of reversion on OSM.

Known issues

  • This module uses and depends on augmented changesets generated from osm-compare project used in OSMCHA. Example changeset:
    • If a changeset is not available in this bucket, the npm module throws failed to fetch errors
  • Module fails for reversion of changesets that have modified a feature more than once. Example is This feature is created at V1, modified at V2, and then deleted at V3.

I would like community help in improving the reversion rules and to expand success rate of this module. Shifting to public API with longer historical data for getting feature history would improve reliability. If you have feedback and ideas for improvement, please file issues over at

#5236 - Typhoon Ompong:Here I come helping out !!!the Philippines

Posted by vicksun on 18 September 2018 in English (English)

I wonder why I spent so much time in and out on US Visa application when I can invest such time helping out my brothers in Philippines being ravaged by disastrous Typhon!!! Just occurred to me I can leave the Visa system for a while to cool off while I contribute to task #5236.And it was a great idea coz I just mapped a number of buildings.Let's keep mapping using every slight opportunity on net!!!!#uniquemappersteam Now I can check back on the US visa application system to continue!!!

My edits in Bergen County, part 2

Posted by ComBlOp on 18 September 2018 in English (English)

After finishing mapping a lot of Paramus, (that one place with three malls) I decided to map Alpine. While I didn't really consistently map Alpine and instead mapped a lot of other random areas in Bergen County during the time I set my eyes on Alpine, today I decided to seriously revisit Alpine and finished mapping it.

It was way easier than Paramus, mostly because there is a lower population density and a lower area, hence less building to map. However, as Alpine is one of (if not the most) expensive places to live in within the entire United States, every building required way more nodes than usual. The houses are so large, some people could basically kill to live there!

A lot of my edits outside Alpine were in Hackensack. Downtown Hackensack has a lot of buildings and a lot of parking spaces. I'm going to map Hackensack very soon.

Next up is going to be River Edge, and then Palisades Park. I really love Palisades Park and every time I go there I feel great. Meanwhile, River Edge has a great public library, and something just makes Kinderkamack Road very lovable.

On OSM, Bergen County is improving quickly. At this rate, I don't see much, if anything stopping me from going on for at least another month.

You can click below to see Alpine:

Location: Alpine, Bergen County, New Jersey, 07620, USA

Development Seed Data Team Supporting Humanitarian Actions

Posted by RichRico on 17 September 2018 in English (English)

Development Seed data team has been supporting the HOT community for a long time collaborating in many mapping projects in response to disasters, health, transportation.

The main objective on the participation in these disaster projects in these cities is to mitigate and reduce the impacts of natural disasters, thus helping the population to save lives and reduce the victims of events.

In the last months, Development Seed data team have been working in Ebola 2018 campaign, in this campaign 58 projects were created on tasking manager that have been developing since May, the Development Seed data team supported a project in the Congo, other projects where our team helped were in the project of the eruption of a volcano in Guatemala, earthquake in the city of Takatsuki in Japan, and also in floods in the cities of Kurashiki and Sojya - Japan.

More detail about each project and our support in each one can be seen below:

- Ebola virus disease in Democratic Republic of the Congo

- Project 2018 Ebola #49, Lac Tumba south 2

On 2018 May 8th, the Ministry of Health has announced the 9th Ebola outbreak in the Democratic Republic of the Congo. This task was aims to map the buildings in the villages south of Lac Tumba, in Equateur province.

The purpose of this mapping is to track all buildings that exist in the area to be able to visualize the population that exists in the area, which could be affected by Ebola disease if the spread of the disease is not prevented.

Task Manager for Project 2018 Ebola:

Related image

In the image we can see those responsible for mitigating the disease that are in an area affected by the disease, in this image it is shown that they are fumigating a person who died from Ebola disease.

- Volcan de Fuego Eruption, Guatemala

On Sunday June 2nd, Guatemala’s Fuego Volcano erupted violently and with little warning, sending ash nearly four miles into the air, and burying villages under an avalanche like pyroclastic flow of super heated ash and volcanic gasses. For this reasons, the NASA Disasters Program has requested for maps of buildings and critical infrastructure in areas vulnerable to Lahar and Landslide, for estimating the number of structures, as well as population, vulnerable to lahar and landslide. For this request, the tasking manager were enabled and many users helped the buildings mapping.

Each building added on the map helps response and aid organizations prepare for, and minimize, compounding emergencies.

The new mappers' collaboration was really important to complete the task in short time and the expert mappers' collaboration was very helpful for validation the task due to the density of characteristics in the area of mapping, for that reason, Development Seed data team as expert mappers helped mostly in the validation.

Task Manager for Volcan de Fuego:

Volcano Fuego during an eruptive pulse Many people have been injured in the eruption

- Takatsuki City, Osaka Earthquake 2018 JAPAN

On 18 June 2018, around 7:58 a.m. Japan Standard Time, an earthquake measuring 5.5 on the moment magnitude scale struck in northern Osaka Prefecture, Japan. The earthquake's epicenter was near Takatsuki and occurred at a depth of 13.2 kilometers (8.2 mi).

The shaking from the earthquake was felt strongly in the prefecture and the nearby metropolitan areas of Osaka and Kyoto, temporarily disrupting electrical and gas service to 170,000 homes and buildings. The earthquake struck during rush hour, disrupting train services for several hours, and also damaged water pipes and hundreds of homes. At least four people have been killed and 417 people have reported injuries

In this project all the buildings were mapped to be able to visualize the damages caused by the earthquake, and in this way the firemen, lifeguards can save and evacuate the affected population

Task Manager for the Osaka Earthquake:

Related image

In the images we can see that because of the earthquake the roads were cracked and some houses collapsed.

- Japan Flood 2018 July, Kurashiki and Sojya, Okayama

In late June through mid-July 2018, successive heavy downpours in southwestern Japan resulted in widespread, devastating floods and mudflows. The event is officially referred to as Heisei san-jū-nen shichi-gatsu gōu (平成30年7月豪雨, "Heavy rain of July, Heisei 30") by the Japan Meteorological Agency. As of 20 July, 225 people were confirmed dead across 15 prefectures with a further 13 people reported missing. More than 8 million people were advised or urged to evacuate across 23 prefectures. It is the deadliest freshwater flood-related disaster in the country since the 1982 Nagasaki flood when 299 people died.

In this project all the buildings were mapped so that in this way to know how many buildings were affected in the area, this allows the aid to reach the areas affected by flooding and so people can be evacuated.

Task Manager for Japan Flood 2018:

In the picture we can see the areas that were flooded and the firemen are in place to help people

All the previous tasks were completed 100% in the mapping and also in the validation.

The Development Seed data team is always on the lookout in the HOT slack chat, to see if there are urgent projects on which we can support. We also make tweets so that more people find out about the project and so they can join the cause and support, as an example this tweet was published in response to the earthquake that occurred in the city of Takatsuki Japan

All these tasks are carried out jointly with other local and non-local communities, as in the case of Development Seed data team, in this way we can support the HOT community in the mapping and validation of disasters no matter where we are.

If you are a beginner and want to contribute, we suggest that you visit the Tasking Manager Tutorial at LearnOSM.

Accueil des bonnes volontés néo-contributrices

Posted by deuzeffe on 17 September 2018 in French (Français)

D'après une réflexion à haut-clavier de Marc_marc sur talk-fr

"Il y avait aussi l'idée d'envoyer un message de bienvenue aux nouveaux, pas assez de monde pour le faire."


The Garabogaz Carbamide (Urea) Plant

Posted by apm-wa on 17 September 2018 in English (English)

Today I arose at 0400 hours to catch an early flight to Turkmenbashy, then upon arrival there rode a bus for three hours to Garabogaz over the bumpy P-18 "highway" (actually a 1-1/2 lane country road most of the way) to witness the opening of the Garabogaz Carbamide (Urea) Plant. This will be an important augmentation of the export potential of Turkmenistan so is something that needs to be mapped, including contact information, which I added this evening upon return to Ashgabat. A small number of Mapillary images are being uploaded as I type this.

Location: 3-nji kilometer, Garabogaz Carbamide Plant, Balkan Region, Turkmenistan


Posted by WolfySu on 17 September 2018 in Chinese (Taiwan) (‪中文(台灣)‬)


Location: 25.010, 128.483

Grand Union Canal - Milton Keynes - towpaths

Posted by NorthIsland on 17 September 2018 in English (English)

Recently had a delightful narrowboat cruise around the Milton Keynes area (yes the canal route is remarkably green here). When I checked mapping, I found that, a few years ago, much of the towpath had been mapped as 'bridleway'. Now, canal users did originally use horses to tow their boats but that does not imply any general right of access, unless a towpath has been adopted as a PROW. Most of the UK Canal Network is now controlled by the Canal and River Trust and there are signs to say that pedestrians may use the towpath, while cyclists are 'permissive' and horse-riders should seek permission. I assume this applies to all their canals, see . I would support towpaths being mapped as bicycle = permissive (or yes); foot = yes; highway= footway; operator = Canal and River Trust; towpath = yes - and only designation= if a PROW. Where cycle networks run on towpaths then I've seen the use of highway=cycleway etc. Any other views? Maybe needs updating to reflect the available Canal and River Trust policies?

GraphHopper Routing Engine 0.11 released

Posted by karussell on 17 September 2018 in English (English)

A new release is ready for download! Several new features and changes were made. For example the isochrone module is now open source! Read more about this release here

isochrone preview

Gear for MTB mapping

Posted by ChristianA on 17 September 2018 in English (English)

One of my favourite activities is mapping trails and other stuff in the forest, especially when mapping using an MTB. Using a bike allows my to get further quicker than I would by foot, and with the bike I can go more or less anywhere.

Also, it is really fun to ride an MTB in the forests where I live. I try to map the trails that might be useful for others. Another important thing is that other map providers often do not have any information about trails/paths in the countryside.

So I thought it could be interesting to show what stuff I usually pack when going on a trip. Apart from what is shown in the images I also bring some food or snack, such as fruit or a chocolate bar. Then I also keep some backup carbs such as a gel in my pack, just in case I run out of fuel.

Backpack for mapping From right to left we have:

  • Backpack and hydration bladder
  • GPS. I usually use an Etrex30, but on longer trips I also bring an old Foretrex as backup
  • Spare bike light. It can't replace a real light, but it's small and easy to carry, so it's good to bring along in case I stay out for too long.
  • Gel or some other form of backup energy. Something that lasts for a long time, so I can keep it in the backpack for a longer period.
  • Reserve tube. I switch size depending on the bike I will use.
  • Bike pump
  • A little toilet paper in a plastic bag. The plastic bag can serve many purposes, the toilet paper can be used for wounds, and of course it can be used normally as well. When you need it, you're glad you've brought it along! And it only weighs a few grams.
  • Tools in a smaller bag. See the image below.
  • First aid kit. Pretty cheap and light, but contains most stuff one may need. I keep this in a plastic bag as well, so it is clean and dry when it is needed.

Tools In the small bag I have:

  • Multitool for bikes (includes a chain tool)
  • Tyre levers
  • Plastic strips. Useful for many things
  • Spare derailleur hanger. Can save you a long walk home.
  • Some spare bolts. I probably need to add a few more different sizes though.
  • Chain quicklinks. Since I use different bikes I bring one of each for 8, 10 and 11 speed chains.

When I go for a mapping ride, I usually go alone, since my biking friends don't enjoy crawling through thick forests to find an old quarry, trying small paths just to see where they might end up (often dead ends) or spending 30 minutes looking for an old ruin. So when I ride alone I use the OsMoDroid app to automatically send my position every minute so that my family can find me in case I have an accident or similar.

In the GPS unit I have stored POIs for places that I suspect may hold something interesting I might want to map. In the phone I also keep a planned route and the OsmAnd app, which is really useful.

Of course I also bring clothes to match the weather. What I probably should get is a small pocket knife, since that can be very useful if anything happens in the wilderness.

Note: I don't endorse any particular brand of gear. All these items I have purchased and paid for myself.

Location: Hammarbergsudden, Norrköping, Landskapet Östergötland, Östergötland County, Götaland, 618 93, Sweden

Typhoon Ompong: Cagayan and Batanes

Posted by Saviour Owujie on 16 September 2018 in English (English)

So today the 16th day of September 2018, I mapped the Cagayan and Batanes areas of Philippines. I contributed in mapping more than 80 buildings to support the local mappers and also to celebrate my friend's birthday lol. Though I'm still mapping, lemme see how many more buildings I can help in mapping in the next few hours. Currently mapping this area


Posted by 817817 on 16 September 2018 in Japanese (日本語)



これには、現在生活する上で一体何台の監視カメラに撮られているのかを確認し、自身の権利について考える機会を与えるというプライバシー面の効果と、 大きなイベントの際に警察等が行う「見せる警備」の様に、監視カメラの存在を周知することで犯罪を予防するというセキュリティ面の効果、二つの良い効果があります。


皆さんも是非、監視カメラを見つけたらOSMに登録してみてください。 そして、是非自分が一日に何回、監視カメラに映っているのか確認してみてください。(私は一日で72回映っていました。)

ちなみに、登録した監視カメラはSurveillance under Surveillanceというサイトで閲覧出来ます。


  1. 監視カメラを登録するとプライバシーとセキュリティの両方に貢献できる。
  2. 現時点で日本に登録されている監視カメラは544台だけである。
  3. 皆さんも監視カメラをマッピングして自身のプライバシーについて考えて欲しい。



個人的な意見を書くと、私はプライバシーと逆行するため、監視カメラがあまり好きではありません。しかし、防犯上役に立っているのも恐らく事実なのでしょう。なので、防犯上必要なものを除いて出来る限りの監視カメラが無くなる事をねがいます。(プライバシーに関するおすすめ記事: 1, 2, 3)


Posted by Inneh Precious on 15 September 2018 in English (English)

On Monday 10th September 2018 I was engaged into a week OSM fight with OLODIA AMBROSE a great colleague and friend of mine. I was able to meet the target of digitizing over 3000 buildings on Friday 19th of September 2018. My major contribution on the mapping were at #Mpapetremor, #Ozuoba_RiversState and others. Well, I had to give in a lot ; my time, leisure and duties for it tenaciously because my competitor is a tough match. One of my secrete to this huge success was performing my best under fun. Fun is the secret ingredient to staying calm and doing best when the heat of competition is turned up high. I tell you this is one interesting thing or game I find doing aside playing chess and I'm glad to be a participant. Above all things glory God.

Openstreetmap en la pantalla.

Posted by kaxtillo on 15 September 2018 in Spanish (Español)

No se que pensaran los demás amantes de los datos geográficos abiertos, pero desde que te sumerges en este mundo no pasas un solo momento de apasionarte al ver un mapa en cualquier lado.

Últimamente tengo la insana fijación de tratar de verificar si los mapas que aparecen en pantalla tienen relación con los que hacemos en esta comunidad. Abro esta entrada para verificar la veracidad de mis observaciones con los demás miembro de la comunidad.

  • Caso Misión Imposible

Uno de los casos recientes tiene que ver con la imagen del plan de fuga de Solomon Lane, el agente especial británico y villano de la reciente película de Misión Imposible: Fallout. Alrededor del minuto 41:49 de la cinta se puede ver el mapa con el plan de fuga.

Misión Imposible: Fallout

Y consultado en openstreetmap puedes ver el mapa completo donde coincide la digitalización de los árboles.


Lo que realmente no me queda claro es la atribución en los créditos, los cuales no alcance a ver al final de la película.

  • Caso Iron Fist

En el capítulo 1 de la temporada 2 de la serie, Danny Rand el justiciero Puño de Hierro consulta la base de datos en busca de reportes policiales alrededor del China Town.

Iron Fist T2 C1

Cosultando el Barrio Chino de New York se encuentra el mapa que hace referencia al que aparece en la serie, si bien el mapa es real no hay referencias claras con las que podamos relacionarlos a openstreetmap.

China Town

No duden en escribir si tienen mas observaciones al respecto.

Location: Popayán, Cauca, 190001, Colombia

"Everything is connected" is not true

Posted by Ay0 on 15 September 2018 in English (English)

Contributed to HOT OSM Project: #5236 - Typhoon Ompong: Cagayan and Batanes Structures

There were a lot of remote structures that made me imagine what horrors could have happened there and no one ever found out about. Though, on the bright side, they could also be secret headquarters of super-heroes.

In the end, I realized that the popular saying "Everything is connected" is not true

Mapping session

Posted by Joanna R on 14 September 2018 in English (English)
  • On this day in our cwts++ class(September 13, 2018) we learned more about Mapilliary and OpenStreetMap, on how we use it properly and also we did some validation in JOSM. On our leaderboard, the class has already made 23,000++ edits in mapping. Its like 36,535 basketball courts. I was happy because our hardwork in mapping had a remarkable result. We were also taught on how we can improve our mapping skills and how we can map more precisely.

  • Some of my classmates are doing a task in the Philippines "PH road network improvement" in which they have to find out where the missing roads in the Philippines. Mapping is very fun and interesting but it’s hard because some of the imagery are cloudy and some buildings are really hard to be found. And our instructor discussed about the "SatNav System" or "Satellite Navigation System" that allows small electronic receiver to determine their location. And the "GPS Satellite Constellation" consists of a constellation of satellites transmitting radio signals to users. And also our instructor discussed about how GPS works. Weather, time of day and precipitation may affect the radio signal.

  • After the discussion we had a individual appraisal and by group, we show and tell to our instructor about our neighborhood edits using OpenStreetMap and JOSM. The instructions are login to your OSM account and locate your neighborhood after that, download the data in JOSM and filter your edits. We validated, and fixed our issues in our neighborhood using JOSM and also we double checked our fieldpapers that we marked so that we can review our edits in JOSM to resolve some errors. When you want edit maps using JOSM, you could download the map and you could use it online while iD editor in OpenStreetMap needs wifi access. Some of my classmates kave done a lot of edits in their neigborhood, they found out what establishments that are not specified in the OpenStreetMap.

  • There are some issues that our instructor showed us and asked us on how we can resolved it. We validated task 4993 in Lake Sebu, SCO, PH. We used the JOSM editor to validate our classmates’ edits. In this session of cwts++, we have learned a lot like the website Maproulette which our instructor introduced but sadly only few of my classmates can validate because they finished their assigned task and we had a seatwork to find a funeral or memorial homes and double checked the tags.

  • Every session that we enter gives us more knowledge that we need in mapping. I hope to learn and contribute more in the upcoming sessions. I would also like to thank our instructor, Mr. Erwin Olario for teaching us new things and knowledge in this field!.

  • Alt These are our tasks for today

  • Alt These are our tasks for today

  • Alt These are our tasks for today

  • Alt These are our topics for today

  • Alt These are our topics for today

  • Alt These are our topics for today

Philippines/CWTSS++ Project

PUP San Juan




Posted by honesty2 on 13 September 2018 in Abkhazian (Аҧсуа)


svg-Export auf Bitmap statt Vektorgrafik

Posted by HB28201 on 13 September 2018 in German (Deutsch)

Aus dem SVG Export auf kommt nur noch ein Bitmap-Objekt heraus: <?xml version="1.0" encoding="UTF-8"?> <image id="image1058" width="6805" height="5421" xlink:href="data:image/png;base64,iVBORw0KGg[...] "

Ist das Absicht oder ein Fehler? Ich benötige svg-Dateien zwecks Weiterbearbeitung in Inkscape.

Wer kann helfen? Danke. Grüße aus Bremen.

Location: Altstadt, Mitte, Stadtbezirk Bremen-Mitte, Bremen, 28195, Deutschland

Bus lanes viewer

Posted by acsd on 12 September 2018 in English (English)

I created viewer of bus lanes with simple editor. Viewer supported busway and lanes:psv schemas. Editor - only lanes:psv scheme. bus-lanes bus-lanes bus-lanes