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Monthly roundup - common errors and unexplained edits observed

Posted by nammala on 27 January 2017 in English (English)

Continuing from our previous diary post on inconsistent edits observed, here are the inconsistent edits observed in OpenStreetMap between 26 December 2016 - 27 January 2017 using OSMCHA.

We commented on the changesets:

  • Deleted main stream and added an incomplete one: changeset
  • Deleted existing roads and buildings: Changeset 1, 2, 3
  • Added unnecessary trunk roads: Changeset
  • Deleted buildings: Changeset 1, 2, 3
  • Deleted roads: Changeset 1, 2
  • Added unconnected footways with footway=crossing, crossing=zebra for the whole length of the road: Changeset
  • Added self intersecting footway that goes over a building: Changeset
  • Added address in name tag: Changeset
  • Added single large buildings for many buildings instead: Changeset

Community members commented on the following changesets:


  • Added waterbody which doesn't exist in the imagery: changeset
  • Added christmas tree saying Happy new year: changeset

screen shot 2017-01-03 at 12 40 50 pm

  • Added a waterbody with water=sound tag in the ocean with name as Doodoo water : changeset
  • Changed name of the highway: Changeset 1, 2
  • Added duplicates of POI's: changeset
  • Added footways all over one place: changeset

screen shot 2017-01-12 at 10 12 17 am

  • Deleted Valid data on map: Community reverted the changeset
  • Deleted buildings: Reverted the Changeset
  • Testing Opengeofaction data in OpenStreetMap (OSM): Community reverted the changeset
  • Deleted roads: Reverted the changeset
  • Deleted existing footways, major highways and renamed highways: Changeset 1, 2, 3, 4, 5, 6, 7, 8, 9
  • Changed highway tag: Community reverted the changeset
  • Inappropriate information: Community reverted the changeset
  • Inappropriate temporary race track mapping: Reverted the changeset
  • Added a primary highway not connected to anything and has an access=private tag: Changeset
  • Added Fictional roads: Reverted the changeset 1, 2


  • Added cricket and football pitch in a park: Commented on the changeset.
  • Fictional data by Pokemon mapper: Reverted by the community Changeset
  • Added number of footways in one location: changeset

screen shot 2017-01-03 at 9 39 30 am

  • Added Pokemon gym stations: Reverted the changeset 1, 2, 3, 4
  • Pokemon Go mapper. Reverted the bad stuff Changeset 1, 2, 3
  • Changed residential roads to footways: Reverted the changeset
  • Fictional footways. Reverted the changeset 1, 2, 3, 4, 5

If you are interested in validation, check out our validation guide on using OSMCha. From the past one month, we have been observing a lot of Pokemon Go mappers adding footways, cycleways, pedestrians, parks etc. Some of them are adding valuable data and while some are doing fantasy mapping. Do keep an eye on the edits happening in your neighborhood and comment on changesets which seem inconsistent to let the user know which will help them become better mappers and also lets us maintain the data quality on OpenStreetMap

Look forward to another roundup in the coming week.

New footway

Posted by ronak729 on 27 January 2017 in English (English)

This footway existed for a long time but nobody marked it.

Location: Grand Trunk Road, Asansol, Barddhaman, West Bengal, 713300, India


Posted by Aryan Jha on 27 January 2017 in English (English)

Gandhi maidan.

Location: NH114A, Santhāl Pargana, Dumka, Jharkhand, India


Posted by Arandum guy on 27 January 2017 in English (English)


Location: Franklin Park Estates, Springfield, Sangamon County, Illinois, 62703, United States of America

"Crisis of anarchy"

Posted by BushmanK on 25 January 2017 in English (English)

Reading this thread from the Tagging mail list, I've noticed several posts describing a problem of lacking governance, leading to endless (even looped) discussions and other negative consequences for the project. I agree with that because if we really want to create, maintain and improve "the best map of the world", it is counter-effective to rely on natural evolution only. Obviously, it will take too much time.

But I don't think that governance requires a government as a group of people, like Mark Bradley have proposed in that thread. It could be enough to have a formal guideline or a declaration of goals. For example, we can endlessly argue about semicolon-delimited values, presenting nicely polished pros and cons. But it is impossible to have a consensus if we don't have a goal or a guideline to test a certain proposal or a statement against it.

Like, how important is it to be able to query any new tag with an Overpass API? Is Overpass API a key part of the OSM infrastructure, or not? Should we care about having a universal meaning of every tag in any country? Should we care about not having a non-verifiable, vague or relative definition of a tag? What about overlapping definitions? Is it important not to force a data consumer to conduct a detailed research on every tag before he'd be able to use it? Is it acceptable to have a scheme that requires a pre-processing with a spatial query?

Without a common goal, any discussion inevitably degrades into a contest of personal views. A special group of people can't fix it because they also need something to test everything against it. They can, probably, try to replace it with their wisdom, but it doesn't seem to be a good idea.

Guidelines could be developed as a GitHub-hosted document(s) to be able to actually develop it and to maintain full control over it, instead of using a bit anarchist Wiki style.

There is an idea (also mentioned in that thread), that everything in this project is already governed by an implementation. But actually, it says nothing about how good or bad a certain thing is. For example, there could be an awful tagging scheme, but there could also be a person, who doesn't think so, and who have implemented it in his tool, renderer or editor. Other people, who have not enough knowledge to understand what's wrong with this scheme, just starting to use it (tag objects with it). Finally, we have a lot of objects tagged this way and it is nearly impossible to change this scheme because nobody cares except ones who keep saying that "changing things is the worst thing". Doesn't seem like a productive practice because it literally translates into a "the first one is the winner" principle - obviously, it makes any further improvements significantly harder.

As a bottom line, I want to say it again: government as a group of people doesn't seem to be necessary but having better guidelines does.

Update. The difference between a government group and a guidelines development group is quite simple and obvious.

The government is an executive organization. Usually, it looks into every case within its scope and has to make a decision how to deal with this specific case. Obviously, it takes a lot of time and it is still impossible without having a commonly accepted set of rules. Otherwise, it leans towards an authoritarian system.

Hypothetically, guidelines development group is a "legislative" organization. It has to make decisions regarding of technical questions before such question will raise. The solution gets a power of rule. So, it solves a lot of similar future questions at once. It saves time, it can't be personal, it is evidence-based.

HOT Voting Member 2017 Personal Statement

Posted by Biondi on 25 January 2017 in English (English)

I am grateful for the HOT Voting Members nomination by Adityo Dwijananto, DMI Project Coordinator Indonesia. Please find below my personal statement.

How did you become involved in HOT?

I was first exposed to the work of the Humanitarian OpenStreetMap Team in Indonesia as a Communications Specialist back in early 2014. Coming from neither Geography nor IT related background, I was confronted with a significant challenge trying to understand even the most basic terms used in what I see as somewhat foreign and uncharted field. I was lucky enough, however, that I got to work with a bunch of patient and talented group in HOT Indonesia as it gave me space to slowly digest and connect the dots between my social and international affairs background with a more technical domain. And to come to think of it, coming from a non-technical background has helped my work which is, in a nutshell, to try to convince people that mapping is not as difficult and as technical as it seems. This has enabled me to relate more on the way muggles see crowdsourced, digital mapping from an external, non-technical persons’ view and communicate it in plain language that community members can relate to.

Could you tell us about your involvement in HOT, mapping and/or humanitarian response?

In 2016 I rejoined HOT in two projects, Disaster Management Innovation Indonesia and InAWARE PDC city-wide mapping. I oversee community engagement, among others, ensuring that public and stakeholders are well-informed about what we do and how they can contribute. I design overall outreach strategy; create and curate publication content; posted updates and tutorials; write press releases; organize radio appearances, community meetups, and live-streamed offline GeoOSMWeek Talkshow in @atamerica; guide activities for communications interns; and liaise with students-driven training replication. I was also involved in Tasking Manager Activation and response to Pidie Earthquake and the Disaster Risk Reduction Week by BNPB.

What does HOT mean to you?

HOT to me means giving people access and opportunities. It provides tools for communities, especially the most vulnerable ones to map themselves and help map others in need. HOT has been very productive with steady growth of exposure and partnerships which had enabled small groups of people to yield significant impact to the world of humanitarian response and economic development. In HOT, every bit of contribution can make a measurable difference.

Why do you want to be a voting member?

Being a voting member means having the room to engage more proactively. I think it is important as a Communications Specialist that I am made aware of the recent development of the organization so I can keep the targeted mass stay informed. This will also add up ways for me to learn more about the technical side of the organization and continue learning from more experienced members.

As a voting member of HOT what do you see as your most important responsibility?

I believe all HOT members, especially the voting members, are keen to continuously think and innovate how to further the impact the organization long to create. As a member with non-technical academic background, I can use my acumen to sense how our tools can be used by community where mobile network penetration is still problematic. I think most Indonesians (and other developing countries) are like me (before joining HOT), they aren’t yet familiar with crowdsourced tools and are more keen to participate when they can see the outcomes in physical, tangible forms. To stimulate participation where awareness to disaster preparedness is minimum, let alone mapping for it, is the area where I would devote time and energy to advocate for.

How do you plan to be involved in HOT as a voting member?

Putting HOT front and center in humanitarian response and economic development means bringing wider exposure, not only to recognition but also to constructive criticism. Ensuring how we communicate every policy change made by voting members, if any, means taking a serious endeavor at ensuring that our message gets across as intended. Community engagement has been at the core of my previous working experience with the Open Government Indonesia under the President’s Delivery Unit for Development Monitoring and Oversight (UKP4) and with several other student organizations. To expand and narrow down the principles in community mapping has given a lot to take in as part of professional development and that’s how I wish to be involved as a voting member.

What do you see as HOT's greatest challenge and how do you plan to help HOT meet that challenge?

Ensuring the sustainability of HOT projects are among key issues. It is important to ensure that we do not only train people how to map but also equip them with necessary leadership skills to mobilize their peers in mapping. Sensitizing community members with the right motivation of how significant the exposure data they are providing by mapping their neighborhood without having first to wait until a disaster strikes, for example, need to be further sharpened. Involving vulnerable groups, such as women, youth, the elderly and people with disability, should also be among key campaigns to champion.

Location: Jalan Kebon Kacang 32, RW 04, Kebon Kacang, Tanah Abang, Jakarta Pusat, Jakarta Special Capital Region, 10240, Indonesia

Colloquial English

Posted by alexkemp on 25 January 2017 in English (English)

It took a few days before the penny dropped for me with this house-name from Imperial Avenue, Gedling:


For the benefit of those whose only connection with English is Received Pronunciation (“RP”):

Those speaking RP will always pronounce the ‘H’ in “his” or “her's”. There are many regional dialects within England that would never pronounce the ‘H’ (mine own dialect was Yorkshire, although now diluted by spending 30+ years in Nottingham). It is most typical within colloquial English to hear the ‘H’ dropped in such words.

What a classic street-name for the 1920/30s!

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

Let's Map Some Points of Interest in San Francisco City using Mapillary!

Posted by poornibadrinath on 25 January 2017 in English (English)


When you happen to walk on a street, what usually catches your eye? The street? The trees? Or a cute little shop in the corner having a neon sign board saying pastry? Shop with a pastry sign, mostly! Such shops, stores, restaurants, bakeries, ATMs, etc. are what we call Points of Interest (POI). POIs makes the map well, interesting (pun unintended). It is equally important as streets and buildings to any map for navigation.

Mapping POIs usually requires a mapper to collect GPS traces and take photos on the ground. With Mapillary street-level photos, anyone familiar with the city can look at any Mapillary photo taken by others and use them for mapping POIs.

Here's how you can map them👇🏻

  • Open an area you are interested in JOSM.
  • Enable the Mapillary plugin to see the images of that street. If you don't have the plugin available go to Preferences > Plugin.


  • Use the Mapillary filter to get only the latest photos. This prevents us from looking at old photos that shows POIs that may not exist on the ground anymore.

sfmapillary Enabling a Mapillary filter will help in prioritising only recent images.

  • Check every street for POIs. Found anything missing? Add them in OpenStreetMap. If they are already present on the map, verify or add more information.

  • To make POI's appear more prominently, use the osmic map style. osmic

Mapbox has added millions of photos in Mapillary last year and continues to add more!

Our streetcam rig.

The coverage in San Francisco City is nearly complete and we are starting to improve POI coverage using these photos.

screen shot 2017-01-25 at 12 30 23

Head over to our ticket for detailed workflow or jump right in and grab a task.

Mapping POIs is straightforward, but maintenance is challenging. Even though we are limiting to only recent Mapillary photos, a lot can be changed within a span of days. In such cases, ground truth matters and local knowledge would be the best to know where what has been changed.

If you have any feedback on the workflow or suggestions on improving the same, please do let us know. Looking forward to the continued collaboration.

Thank you,


From Mapbox Data Team

Passion for maps, graphs, and data

Posted by Eks33 on 25 January 2017 in English (English)

Today begins my mapping journey. I have not taken on any specific tasks, but for now my only aim is to learn by slowly correcting errors and adding more details to maps of my city. Bring a programmer with a passion for maps and graphs and all things data, I've decided to take on OSM as a hobby and learning tool. Eventually I would love to get into scripting my own very interesting visualizations on maps!

Splitting Interstates into 2 relations (East/West) & (North/South) Mega Project #2

Posted by TheDutchMan13 on 25 January 2017 in English (English)

In Order

  1. I 43: Completed
  2. I 55: Completed
  3. I 64: Completed
  4. I 69: Completed

Stay tuned for more updates. If you know of anymore interstates that need splitting let me know in the comments

Update 1

  1. I 77: Completed

Anal Retention

Posted by alexkemp on 25 January 2017 in English (English)

You may be interested to observe the anal retention (twice over) in this view of St.Mary's Avenue, Gedling.

St. Mary's Avenue, Gedling

  1. The first is in the spelling of the street, as in the signpost at left foreground. Notice the full-stop after the “ST” & the apostrophe within “Mary’s”. The street to the south runs parallel to St.Mary's & is called St.Michael's (same stop & apostrophe). Excellent. I'm with Lynne Truss on this.
  2. The second is the weather being anal retentive, due to the presence of an inversion layer.

Chris Fawkes, the weather forecaster on PM, BBC Radio 4 (56:16), spoke of a weather balloon launched today at Nottingham (where I live) which measured the base of the inversion at only 100m from the ground. This inversion is pretty much country-wide and is responsible for some foul air, particularly in the cities.

An inversion layer is a layer of warm air above a ground-layer of colder air; that can be a local effect, a district-wide affair or country-wide (and the latter seems to occur regularly in Britain every 10-or-so years). Fog is a classic consequence of an inversion layer, as is foul air, particularly in cities.

Warm air rises, but any smoke from a fire on the ground will stop at the bottom of an inversion layer. I just once was lucky enough to observe this whilst driving my car southwards on the M1. It was icy-cold but perfectly clear & early morning. An isolated house close to the other side of the motorway had smoke coming from it's chimney (a wood and/or coal fire), but the column of smoke stopped just a few metres above the top of the stack, and then descended towards the ground. When I spotted it, the house was surrounded by a perfect sphere of smoke; an astonishing sight.

It was the combination of a district- (or country-) -wide inversion layer + millions of coal fires that led to the smog that killed thousands of city inhabitants & ultimately to the passing of the 1956 Clean Air Act in Britain.

Interesting or what?

Coda: A big shout-out to Nominatim

Nominatim is the search-engine used within OpenStreetMap to find streets, etc.. I used it just now to add the links for St.Mary's Avenue, Gedling + St.Michael's Avenue, Gedling. Full-stops & apostrophes can be a real bug-bear for text-searches. No problem for Nominatim; it found both streets first time, no issues at all. Hoo-yah!

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

My HOT Experience

Posted by RAytoun on 24 January 2017 in English (English)

I first got involved with Humanitarian Openstreetmap in February 2014 when Mount Kelud erupted in Indonesia and I saw the power of concentrated crowd sourcing in action. It was impressive. I also realised that it was the ideal way to contribute to Humanitarian disasters and crisis because the time and effort put into mapping would go directly to the people who needed it the most, and it would be immediately available to them. It was here that I realised this would probably be the way that Openstreetmap would reach the idea of a basic map of the world. With concentrated efforts like this. When Missing Maps started up their Mapathons in London in late 2014 I travelled in to London to meet with like minded people who wanted to fill in the blank spaces. Because of my mapping background I was elevated to helper and then tutor quite quickly and I was achieving far more mapping by helping others to get started than I would achieve on my own. I became an active member of the HOT Training Working Group. I was also able to help the London Mapathon evolve into it's present format of three sections …. iD, JOSM and Validators … and have been involved in 36 Mapathons to date helping the London team introduced Humanitarian mapping at many corporate and educational venues. My record of involvement ( and ) shows that in a little less than four years I have created over 11,400 changesets and worked on 180 Tasking Manager projects which include HOT activations such as Mount Kelud, West Africa Ebola Outbreak, Malawi Floods, Typhoon Ruby, Cyclone Pam, Nepal Earthquake and Hurrican Matthew to name a few.

To me HOT has become a very important player in the field of Digital Humanitarianism and has helped to make Openstreetmap an important tool in Disaster Management and, with the Missing Maps Project, opened it up to many more Humanitarian initiatives and interventions. With Openstreetmap it has supplied the mechanisms and tools for the ordinary person on the street to become directly involved with assisting saving lives during disasters and is the instrument that motivates an army of volunteers to step in at short notice and make a very real difference in the planning and management of rescue, recovery and rehabilitation.

Becoming a voting member shows my commitment to HOT and gives me a say in the the type of people who will be voted to the Board to represent HOT. It also adds credibility to my position as a guest speaker promoting HOT and Openstreetmap at various institutions and functions. I will continue to increase the numbers of trained mappers and validators, continue my involvement with the Training Working Group and will expand my activities and involvement with the Disaster Risk Reduction Unit of Portsmouth University. I would like to help the volunteers of HOT remain focused on assisting in times of humanitarian disasters.

My main interest is in the standard of mapping. A real challenge at this stage is to keep HOT's mapping during disaster activations at a good standard of accuracy so that the teams on the ground will continue to see it as a tool that they can rely on at the moment when it is most needed. By working with the developers to improve the editors and tools available, with the Training Working Group to improve Training Aids and by training new mappers and new validators at Missing Maps Mapathons so they are ready to start mapping when a disaster occurs will hopefully help to raise the standard of mapping and increase the number of volunteers available to map during activations.

HOT Voting Member 2017 Personal Statement

Posted by Dewi Sulistioningrum on 24 January 2017 in English (English)

Hello HOT community,

First I would to thank you to Yantisa Akhadi for the nomination. I am really appreciate and excited to become nomination in HOT Voting Member. In this diary, I want share my statement for several question related that :

How did you become involved in HOT

My first time involved in HOT Indonesia at February 2012, HOT Indonesia, AIFDR (now DMInnovation) and BPBD DKI Jakarta open opportunity to digitize RW boundaries and infrastructures in Mapping DKI Jakarta project. The collecting data in the project for support flood disaster in DKI Jakarta. After the project, HOT Indonesia open recruitment for Trainer in SD4CP project. I applied and get the opportunity to work in the project since September 2012. I began to teach the local government and community to mapping with OpenStreetMap in their region. I also learn and teach about QGIS and InaSAFE with related with Disaster Management. As trainer, I not only teach them about OpenStreetMap, QGIS, and InaSAFE, I creating and update training material with team. Currently, I have given opportunity as Mapping Supervisor in PDC Project for mapping RW boundaries and infrastructures in Surabaya City and DKI Jakarta province. I'm very happy and grateful that I'm still become part of HOT Indonesia.

Could you tell us about your involvement in HOT, mapping and/or humanitarian response?

Since I became trainer, I learned many activities with related OpenStreetMap and disaster response, training, create material, mapping event, validation data OSM, and ensure the people using OpenStreetMap. I also attended and share my experience in State of the Map Asia in Manila and get scholarship in State of the Map US 2015 in New York City. For humanitarian response, I'm digitize in TM Indonesia and other countries such as Pidie Earthquake, Afghanistan EQ Response 2015 and validation TM Ecuador Earthquake, etc. I’m also join in mailing list HOT and import data OpenStreetMap. Also I’m teach and share my experience with OSM to the local people in ACCESS project for mapping household social economic in South Sulawesi and Southeast Sulawesi.

What does HOT mean to you?

For me, HOT means mapping and disaster response. With HOT, we can start to mapping infrastructures in disaster area priority and ensure the data spatial have good quality. HOT teach me, the data I mapped in OSM not only for me but to people in the world. So I can involved disaster response through mapping in OpenStreetMap.

Why do you want to be a voting member?

Because I want more get involved in HOT activities, learn more about the HOT organization, become part to support HOT sustainability.

As a voting member of HOT what do you see as your most important responsibility?

To participate and support HOT sustainability (especially in Indonesia) and ensure people using OpenStreetMap with good quality mapping in disaster response and other humanitarian aspect.

How do you plan to be involved in HOT as a voting member?

I will join in data working group and continue to involve in the import data mailing list. Also I will give my opinion in HOT mailing list. And as a voting member I will give my vote when HOT need some decisions.

What do you see HOT's greatest challenge and how do you plan to help HOT meet that challenge?

I think the greatest challenge is to ensure the quality and source data in mapping OpenStreetMap to disaster management and economic development. Also HOT can sustainability as humanitarian organization in the world. We can give a support to government, local community, and universities, they will know that HOT exist and hopefully they will use OpenStreetMap to mapping their area. And we ensure their constantly using OpenStreetMap for mapping and possible to teach other people (Training of Trainers) using OpenStreetMap. Another HOT challenge, when mapper OSM has data spatial especially boundaries administrative and it’s upload to OSM. Sometimes he didn’t know about term import data in OpenStreetMap. So the data didn’t have licence and rule OSM. HOT mostly remote the people doing the import data in OSM.

That's all my statement and happy mapping =)

Thank you

Location: Kampung Bali 16, RW 09, Kampung Bali, Tanah Abang, Jakarta Pusat, Jakarta Special Capital Region, 10240, Indonesia

OpenStreetMap and Capacity Assessment Workshop -- Ilocos Norte, Ilocos Sur, La Union, Philippines

Posted by feyeandal on 24 January 2017 in English (English)


As a part of Project NOAH’s mapping initiative, a team was sent to Region 1 for another installment of the OSM and Capacity Assessment Workshop. From 6-13 November 2016, planning and preparation for the workshop proper were done. Project NOAH sent a team with six personnel, who served as lecturers/speakers and proctors for the said activity.


The workshops’ goal is to engage Local Government Unit officials in helping Project NOAH build a disaster resilient Philippines. Since NOAH has long embraced public participation to improve emergency response and disaster mitigation throughout the country, it is but proper to take this crowdsourced and collaborative effort to the ground, thus, to the LGUs’ jurisdiction.

The schedule of the workshop was as follows:

November 8, 2016 in La Union with 57 participants (La Union Provincial Hall, San Fernando, La Union)

November 10, 2016 in Ilocos Sur with 57 participants (Baluarte Auditorium, Vigan, Ilocos Sur)

November 11, 2016 in Ilocos Norte 43 participants (Liga ng mga Barangay Office, Town Plaza, Bacarra, Ilocos Norte)

OpenStreetMap Workshop

The workshop is an introduction to the OpenStreetMap platform; it focuses on the critical facilities mapping on OSM using Java OpenStreetMap (JOSM). Many of the participants already have knowledge on the use of Geographic Information System softwares like QGIS since they come from DRR, planning, and engineering offices.


Participants were given time to digitize the critical facilities related to disaster risk reduction and management on OSM. They were introduced in the use of mobile mapping field data collection applications through the use of Smartphone applications such as OsmAnd for Android and Go Map!! for iOS. They were also taught on using Field Papers, and extracting data from OSM for use in GIS softwares.


Four months before the target workshop dates, the Project NOAH sent and forwarded emails inviting the DRRM Officers of Ilocos Norte, Ilocos Sur, and La Union through the provinces’ governors.

Indeed, DRRM Officers, and even officials from other local government agencies (PNP, BFP, DOH, DILG, DSWD, among others) were present in each workshop. All of which helped in identifying their communities’ critical facilities, presented their Comprehensive Landuse Plans (CLUP), and in turn pinpointed their areas’ imminent risks.

Through the activity, NOAH was able to help harness the geographical contributions of the volunteers/participants who were engaging enough that they helped Project NOAH in looking for solutions heavily involved damage assessment and analysis activities before, during, and after large-scale emergencies.

La Union

Ilocos Norte

Activity Results

Ilocos Output The image shows the edits of the workshop participants from Ilocos Norte, Ilocos Sur, and La Union in their respective provinces on the workshop dates.

LA UNION – November 8, 2016

La Union output During the workshop in La Union, 67 points of interests (POIs), 2 lines, and 21 polygons were added. The edits are mostly in their hometowns and their neighborhoods.

Naguilinan La Union The highlighted objects are the new features that were digitized in Naguilinan, La Union by the workshop participants.

ILOCOS SUR – November 10, 2016

Ilocos Sur output The workshop participants from Ilocos Sur added 10 points of interests (POIs), 3 lines, and 22 polygons in their province, particularly Vigan, Santa, and Burgos.

Vigan Ilocos Sur The highlighted objects are the newly added features in Vigan, Ilocos Sur.

ILOCOS NORTE – November 11, 2016

Ilocos Norte output The workshop participants were able to add 24 points of interests, 1 line and 74 polygons in Ilocos Norte, particularly Dumalneg, Bacarra, San Nicolas, Batac and Dingras.

San Nicolas Ilocos Norte The highlighted objects show the features that were added by the participants in San Nicolas, Ilocos Norte.

Batac City Ilocos Norte The highlighted objects are the features that were digitized by the participants in Batac, Ilocos Norte.

Problems Encountered

Most of the problems encountered were technical, just as:

  • Poor internet connection

  • Compatibility of participants’ laptop

  • Printer jammed during the Ilocos Sur workshop

However, NOAH staffs were able to address these issues efficiently and effectively and the workshops went well.

Training Team

NOAH From left to right: @arnalielsewhere, @wherehavejobyn, @neyziellexrrc_, @Joems Manong, @BakiRamos, @cloud5, @feyeandal

Progress Report: Railway Crossings challenge for MapRoulette

Posted by MikeN on 24 January 2017 in English (English)

Update on challenge status:

Crossing Ways Rail-Highway 35.6% complete
Crossing Type Rail-Highway 53.3% complete

Both types of pedestrian crossings are 100% complete.

I'm taking time to do geometric repairs as well. The result will be a reasonably correct road network near rail crossings.

The links to the remaining challenges are:

[Crossing Ways: Highway-Railway, US]

[Crossing Type: Highway-Railway, US]

The 2016 Board Elections Statistics

Posted by Zverik on 23 January 2017 in English (English)

The OSMF Board elections happened a month ago, but only now I've got my hands on the anonymized ballots. Which means we are getting some statistics.

First, let's look at numbers. By the 10th of November we had 457 members eligible to vote. That is much lower than the previous year, when we had around 500 eligible members. Still, that's just a tiny fraction of active OpenStreetMap editors, so the room for improvement is huge. Other numbers have also dropped: 4 candidates instead of 11 in 2015, and 253 voters (55%) instead of 272 (~53%).

It was definitely the fastest and simplest of OSMF elections: with only four candidates, two of whom were running for re-election and other two much less known in the community, 77% of first choices were either Frederik or Kate. That is, Kate got three times as many first votes than the runner-up. I doubt there is a system in which the outcome of the voting would be different.

A chart for mentions and first places for each candidate

Let's look for the third place. Guillaume got 27 first votes and Darafei got 29. But did Darafei take the third place? By now you should know the STV does not make the answer obvious: it depends on how many people have listed these two as their second choices. And we see that twice as many Frederik's voters had chosen Guillaume for their second vote: 38, and 19 for Darafei. Kate's voters, on the contrary, preferred Darafei: he got 23 vs 18 for Guillaume.

Since the weight of Frederik's extra votes was much higher (0.4 vs 0.3) and more people gave the second vote for Guillaume, he gained most after the two transferral rounds: 60.2 vs Darafei's 55.4. Which would make him the third winner, had we another seat to fill.

Five ballots with just one candidate listed had either Frederik's or Kate's names on them. One ballot was empty, and 184 (73%) had all four candidates. Just one ballot did not have Frederik or Kate listed. 17 ballots had Frederik and Kate for third and fourth choices.

Darafei would take the third place in “Approval Voting”: if we count all mentions of candidates, regardless of a position, then Frederik and Kate would get 234 votes each, Darafei gets 217 and Guillaume 207. Incidentally, Darafei gets the most “disapproval” votes, that is, he is listed fourth on 67 ballots out of 184 that have all four candidates. Frederik has the fourth line only on 29 ballots.

A chart for number of mentions on each place for each candidate

Here is the original ballot file, which you can feed to OpenSTV to check on numbers, or analyze to get more statistics.

The OSMF Board did not change this year, which means we don't have to learn new names, but also that we won't hear new voices. I really hope next time there will be a lot more candidates, especially from under-represented countries. You don't have to be fluent in English or know accounting to serve on the Board. An urge to make OpenStreetMap better and an understanding that you would need to move in small steps is all it takes. Do push yourself for the elections this Autumn, and thanks for choosing us, the current Board members.

Some pictures for your maps with Pic4Carto.js

Posted by PanierAvide on 23 January 2017 in English (English)

As a developer or a map hacker, when you create maps for real world users, it is important to let them know about the context. To represent some object, a pin on a map is a start. However, it is better to visualize the object in its context, and this is best done using street-level pictures.

OK, but using pictures in web maps is hard...

Well, it was hard. There are many pictures providers (Mapillary, Wikimedia Commons, Flickr...), each of them having its own API, returning different results. It is simple to use only one of them, but what if Flickr has pictures Mapillary hasn't ? Or the contrary ? It depends of the cities. It takes lot of time to support every provider, and it may not be worthing it for a simple map.

I agree, but why were you saying that it was hard, it is still the case, isn't it ??

No, now it is easy to use pictures for your map. How ? Using Pic4Carto.js ! Pic4Carto.js is a JavaScript library aiming to provide pictures for your online map or application easily. It retrieves data from several providers in a single function call.

Probably, but I need a real world example.

Here it is.

A simple use case

Let's do a simple map, showing some bicycle parkings. We will display some markers over a Leaflet map, and by clicking one of them, show the nearest picture available. The code of this tutorial is available here, and don't forget to download Pic4Carto.js here, choose the latest package (or if you are a hardcore dev, you can also use npm install pic4carto).

First step, create your base Leaflet map. Also, add some GeoJSON data to display (here, some bicycle parkings extracted using Overpass API).

Code #1

As you can see, in the L.geoJSON call, we can use the onEachFeature parameter to do some processing over every Leaflet layer created from GeoJSON data. Here, we bind a temporary pop-up. Let us keep a track of every generated layer, in order to be able to update them later.

Code #2

Now, we can start the pictures retrieval. After the previous code, we start iterating over generated layers. Also, we create a PicturesManager, which is the main class of Pic4Carto.js. It will allow us in a few moment to retrieve pictures.

Code #3

So let's use this pictures manager. The library works asynchronously, requesting every handled API over HTTP. When an API response arrives, its results are parsed. And when every results has come, pictures are sent to a listening function. You have to create this function, which will receive pictures and do whatever you want. This can be done like below. How it works: when pictures are ready, if any picture is available for the current Leaflet marker, we show the first one in the popup. If no pictures is available, we let the user know about this.

Code #4

Then, we can finally call the function which will effectively start pictures retrieval. You have to pass it a bounding box. As we have here markers, we can do a bit of magic before. We create a circle having the marker as center and a radius of 10 meters. Then, get the square bounding box containing it using Leaflet function. And then calling the PicturesManager function startPicsRetrieval.

Code #5

Let's see the complete code (also available here for copy/paste).

Complete code

It's ready. Yes, for real. With this code you can retrieve all the available pictures for every place in the world. And not having to deal with every provider API. See how it is beautiful.

Result map


Of course, this map is very simple. You will not always see what you want to show that way. That's why Pic4Carto.js has a lot more of functionalities (picture metadata, picture orientation, retrieve statistics of picture availability in an area...) that you can explore through some examples. Now that you know about how it's easy to use street pictures in your web map, no more excuses for not making great maps ;-)

Some links

7.5cm aerial imagery for Washington, DC

Posted by pratikyadav on 23 January 2017 in English (English)

We just updated Mapbox basemap imagery in Washington, DC with 2015 aerial imagery at 3 inch (7.5 cm) resolution.

DC-3 Cherry blossoms at the Martin Luther King, Jr. Memorial

The source data is openly licensed by, thanks to the District’s open data initiative.

The imagery is ready for tracing in OpenStreetMap, where its high resolution will help with detail mapping for buildings, parks, and navigation features like turn lanes.

Happy mapping!!

New Personal Resolution: HOT

Posted by tasauf1980 on 23 January 2017 in English (English)

It’s been a super-fast 02 years with HOT!!!

Throughout my career in the Humanitarian field for last 05 years, I learned a lot about humanitarian works from various organizations operating in my country and found myself deep in love with the movements. Besides working with both in MSF - Belgium and MSF - Holland in the past, I have always been trying to be a part of the Humanitarian movement. However, among all the teams in this field, one team stands aside: HOT. I always feel proud to introduce myself as a part of this global team.

My history with HOT is now getting long, and my dedication to HOT stronger than ever (not difficult, with HOT more amazing than ever). I appreciate Pete Masters & Ahasanul Hoque for introducing me with HOT and continuously backing up with all my works that increased the level of commitment to it. However, it varied recently with time off for some of my personal reasons, fair to say that I voluntarily dedicate more than 30% of working time to HOT.

I became involved with HOT as Pete Masters & Jorieke Vyncke visiting Dhaka to map Kamrangirchar & Hazaribagh area as a part of MissingMaps project. I became aware of the lack of maps of my country, which greatly hampers navigation and development. I found, to be involved with HOT is a dream come true for me what will serve the community for long time with a very minimum effort. I became aware of and was greatly helped and guided by many people at HOT and Missing Maps. Therefore, I started to disseminate this knowledge among people, started helping Ahasanul Hoque & others building a strong OSM community. I voluntarily facilitated more than 20 OSM training and coordinated mapping parities. During this period, I actively got involved with the local field mapping projects in various parts of Bangladesh as a part of the projects by Save the Children, Y Care, American Red Cross, Asia Foundation, World Bank & Asian Development Bank. Now, the global community can feel the vibes that OSM Bangladesh Community is creating. I believe with proper support & Guidance our Bangladeshi dynamic and enthusiastic OSM community have the capacity to catalyze the development and growth of OSM around the world.

To know more please visit:

As days goes by, I regularly started to attend Missing Maps events throughout the globe as a remote validator & mapper, got myself involved with the community-working group and contributed to the fundraising movements. Meanwhile, for me it was a great honor to be nominated for “Expanding the Community Award” for 2016 OSM awards. It was one the best recognition for me.

In 2017, I have drafted my resolution regarding HOT. One of those is to become more integrated part of it by being a voting member. Though I myself feeling and doing like an ambassador of OSM/HOT but the voting membership will give me the official identity what will make my stand bold in future venture regarding OSM movement and HOT activation among communities. Thanks to Pete Masters for pushing me, forward for the nomination. I believe that as voting members of HOT I will have the honor to be part in sustaining the amazing uniqueness as its nature of serving global affected communities wherever they are and whoever they are. During voting, I shall try my best to provide the logical and right judgement what is best for HOT and its sustainable growth in future.

HOT is an amazing initiative that seeks to put the worlds’ most vulnerable people on the map, and I want to support it in any way I can. I would like to be a voting member so that I can try and help promote HOT and ensure it is as inclusive as possible, particularly in less well represented areas such as Bangladesh. I see HOT's greatest challenge as access to funding so that it can support mapping initiatives in areas such as rural Bangladesh and I plan to help with this by helping tell stories about the difference HOT makes.

What I have found is that local communities are seeking to get more organized to engage more officially with government agencies, universities and other institutions. They find they need financial administration beyond borrowing someone's bank account. While some have seen the value of becoming an official HOT Local Chapter, there is still lack a clarity to some about the necessity and benefits. Nevertheless, they see a lot of value to learn from others working on similar issues -- everything from legal and administrative issues of starting an organization, to sharing community engagement strategies that work, to amplifying the voices of their community in the global OSM conversation especially for non-English speakers. Regional connections are especially valuable, for working with mappers in similar languages, time zones, and to some extent culture.

I think there are straightforward things we could do here -- like better communication about and between Local Chapters, develop some simple benefits like templates of core organizational documents, and more support for regional conferences. Just some ideas. One of HOT’s biggest challenge is to sustain the local OSM communities and their interest to doing edit. Another big challenge is the fund for operating HOT activities; lack of OSM community or OSM knowledge in many countries are also a challenge. As a voting member, I will try my level best to ensure the sustainability and activity of our community first.

I have seen a phenomenal group of folks joining the Humanitarian OpenStreetMap Team over here. However, it needs more actions to make OpenStreetMap sustainable in Bangladesh. Hope is with the awesome works by Ahasanul Hoque & others more public & private universities are interested now to join with the initiative and we are now draining deep the knowledge to the community, the new OSM leaders are disseminating the knowledge among the community level disaster response team. The local Government leaders also got interested and taking the vibe to show their competitiveness horizontally and to central authority. We are also thinking for a big initiative to make this happen in more organized way. We are already using the OSM data as layer in Government Geospatial data sharing platform where any one can download the OSM data using Overpass turbo and upload as well as an independent layer with feature info.

Humanitarian partners are what make our mapping work relevant to disaster response and preparedness, and those relationships are a big part of what HOT manages. We've reached a profile and gravity where there are a lot of organizations involved in what we do beyond just using the data, and great potential for coordination. Tapping into this more and figure out what this looks like in my country perspective is something I want to pursue. The thumb rule for data is, "Data have no meaning if there is no use"; so we need to create more use cases for the OSM data being produced with time in Bangladesh otherwise all the initiative will be in vein. We should not wait for disaster to use this data only; therefore, we need to use the OSM data in research and innovation. However, very few researches are ongoing but not significant.

Finally, want to step up more in helping our Board be productive, continue to serve in leadership of the Board, and facilitate our process and communication and meetings well. A big part of that will be collectively setting our strategy for the year, and increasing bidirectional communication with members and the community.

Thank You All…

To know more about me: Website: LinkedIn: Facebook: Twitter: OSM Contributor Profile: OSM TM Profile: MissingMaps Profile: Mapillary Profile:

Location: Vangari Patti, Lalmatia, Dhaka, Dhaka Division, 1207, Bangladesh

27% Completed for Adding YBS Bus Routes in Yangon

Posted by Htike Aung Kyaw on 23 January 2017 in English (English)

Dear Diary,

With the new year of 2017 comes new changes. After the general elections, NLD Government comes into force since 2016 April. The government changes the country step by little step, for a better and prosper future. The government of Yangon region announced the end of the old bus system namely MaHtaTha (မထသ) in early January and the new bus system monitored by YRTA (Yangon Region Transport Authority) will be in place by 16th January 2017. All existing MaHtaTha (မထသ), Than Myan Thu (သန်မြန်သူ), Ah Di Pa Ti (အဓိပတိ), YBPC's BRT, etc... will come to a halt and all the buses will have to operate on new routes under the name of YBS (Yangon Bus Service). Before this, there were over 300 bus routes in Yangon with each routes overlapping one another and the buses would compete with one another in order to get passengers. Tensions rises with competition and traffic is also a factor. For the safety of passengers, YRTA was formed.

300 routes were reduced to 70 (Actual 69, as 13 was omitted) to this date (2017/1/23). At initial announcement, there were 60 routes and later changed to 61 before (2017/1/16) when it comes to action. But after the actual launch, due to the necessity and feedback from customers, another 9 routes were added making a total of 70 Bus Numbers. As soon as the government releases the data, I started adding stops and routes in OpenStreetMap. There aren't many mappers who seems to be interested in this for Yangon Region, so the progress seems slow. YBS consists of 5 colours. Blue, Red, Purple, Green and Brown. Each representing Northern Based Lines, Eastern Based Lines, Southern Based Lines, Feeder Lines to Main Roads and Circular Lines through the Central Business District.

To this day, I have mapped a total of 19 Routes out of 70 (4 Blue Lines, 5 Red Lines, 4 Purple Lines, 3 Green Lines, 3 Brown Lines). I will continue to map the lines as accurately as possible. My first priority is to add a rough location of the bus stops and complete all the routes. My second priority will be adding all bus stops accurately on each side of the road. And finally, review and confirmation. My Diary, please tell to those who are also mapping or are interested in mapping the bus stops, bus routes in Yangon to feel free and contact or ask me. I will also map as much as I possibly can.

Regards, Htike Aung Kyaw

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