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Recent diary entries

Following mobilization of volunteers and OSm newbies at Benue State University to kick-start a new chapter and team of Unique Mappers to drive Map Nigeria Mapathon project and the Makurdi on going project .We had a training for newbies. More than 20 newbies has been mobilized and signed up to OSM. These include William Hundu, the Team Coordinator, Lucas, Glory,Shater ,Jacob an others After the virtual meeting ,I hope to travel to Makurdi for in-person training and MOU with the University and Unique Mappers Network,Nigeria

Also .we are planning for stakeholders workshop for data use cases

Location: Alakahia, Obio/Akpor, Rivers State, 500004, Nigeria
Posted by AyameO on 22 May 2025 in English. Last updated on 27 May 2025.

Hello fellow mappers.

My name is Ayame Otsuki, and I am honored to be nominated as a 2025 voting member of the Humanitarian OpenStreetMap Team (HOT).

I’m based in Japan, and I’ve been engaging in mapping activities as a member of NPO Crisis Mappers Japan since 2015, and I set up a youth team within this community.This February, I gave a presentation about “20years Journey of OpenStreetMap” at State of the Map Japan. Sorry for it’s Japanese

I currently work as a data scientist and analyst at a Japanese telecom company.

What does HOT mean to me?

To me, HOT is a community of people who believe in the power of open data and try to provide humanitarian support across borders. HOT is the one that taught me that a single computer can help some people all over the world.

How did I become involved in HOT?

I first became involved with HOT when I participated in a crisis mapping activity for the 2015 Nepal earthquake, which was organized by Professor Taichi Furuhashi at university. I got to engage in mapping activities since then, and developed an efficient tool (BCr.map) for drawing buildings (rectangles) as my university graduation research project in 2019.

Why do I want to be a voting member?

I would like to be more actively involved in HOT community by becoming a voting member. And also, I want to serve a statistical and objective perspective in HOT’s strategy and governance as a data analysis expert.

My involvement in HOT, mapping, and/or humanitarian response:

I’ve been engaging in mapping activities by using HOT’s tool for 10 years and expand the Crisis Mappers Japan community. I’m also a drone pilot of a Japanese disaster drone rescue team and taught how to operate a drone to local kids.

My most important responsibility as a voting member:

See full entry

Location: Higashikaigan-minami 4-chome, Chigasaki, Kanagawa Prefecture, 253-0053, Japan

Hi Everyone!

My name is Anqi Xu and I’m currently based in Vancouver Canada:) I am a geocoding (and open source) newbie and I’m super honoured to be working on the Transliteration of Search Results project this summer and am really excited to hone my coding skills and learn more about OpenStreetMap! The link to my proposal can be found here. Feedback is welcome (and much appreciated)!

A bit about me; I’m going to graduate (hopefully) from UBC Engineering Physics later this month. I’ve done a variety of internships in many different industries, including quantitative finance, particle physics research, and semiconductor manufacturing! I’m a big believer in lifelong learning, and I really enjoy board games, crosswords, and silly logic games! I’m also a big fan of travelling and visiting new places, and have recently started to document some of that on Youtube.

Thanks for having me and I’m looking forward to meeting everyon!

Location: South Granville, Fairview, Vancouver, Metro Vancouver Regional District, British Columbia, V6J, Canada

So today I get to talk other mappers. and I get to know how they map the challenges the have like; 1. Unavailability of internet connection 2. lack of Devices or tools for mapping etc. After the challenges we get to talk about solutions where we find a solution about getting a router and recharging it so the mappers in a particular area can come together and use it for mapping. And we still Provide systems for those without system to use for mapping till they get their own. I really learned alot from their experiences then by the end of this week i will be able to use JOSM cause we are suppose to be taught by a more experienced mapper. I really enjoy mapping and i still plan to meet mappers around the world so we can share our ideas together

Nisreen Mahmoud, 2025 HOT Voting Member Nominee

Hello fellow mappers, My name is Nisreen Mahmoud, and I am a GIS and remote sensing expert. I am originally from Sudan, and I currently reside in Egypt. I currently serve as the Supervisor of Surveying, GIS, and Remote Sensing Group in the Khartoum Reconstruction Initiative (KRI). In addition to my supervisory role, I also lead OSM Sudan. Previously, I served as the East African zone coordinator for African Women in GIS (AWiGIS) in 2023. Today, I’m also a proud mentee in the Women+ in Geospatial Mentorship Programme, where I continue growing my leadership and technical outreach abilities. I am passionate about creating spaces where emerging mappers, especially women, African mappers, and those from conflict-affected areas, are able to feel seen, heard, and empowered to lead. I am honored to have been nominated as a 2025 Voting Member of the Humanitarian OpenStreetMap Team (HOT). As someone whose life and work are deeply rooted in both humanitarian response and geospatial science, this opportunity feels especially meaningful. I am pleased to introduce myself and articulate my aspirations to contribute to HOT’s mission.

What Does HOT Mean to Me? HOT represents the fusion of community, technology, and humanitarian action. It’s a space where open data becomes a lifeline—used to empower communities, support climate resilience, and respond to crises. For me, HOT is about building bridges between people and tools, between local knowledge and global support.

See full entry

Location: Ma‘adi Al Khahiri, Cairo, 11728, Egypt
Posted by rphyrin on 20 May 2025 in English. Last updated on 23 May 2025.

So, I got invited to speak at a certain OSM community’s monthly online talk.

Nice, right?

Well, there’s just one problem: I have absolutely no idea what to talk about.

Sure, I could present one of my recent OSM-related programming projects, or share updates on what I’ve been mapping over the past few weeks. Maybe even talk about my personal hopes and dreams for the OpenStreetMap movement—or write a more reflective essay on the movement’s progress and future.

The deadline is still a ways off, so while I mull over the best topic, I figured I’d start with something simple. Something fresh. Something that literally popped into my head minutes before writing this post.

It all starts with a very basic question:

“Who is the most active mapper in city X?”


Why This Question Matters

If answered properly, this question could open the door to a whole series of follow-ups:

  • Are they local, organic contributors—not affiliated with a distant organized mapping group but actual residents who have lived in the city for a long time?
  • What does their OSM diary look like?
  • What have they been mapping lately?
  • Are they part of a local mapping group?
  • Have they initiated any projects in the past—or are they running one now?
  • Can we collaborate with them? Reach out?

Active mappers are often the “local ambassadors” of OSM. They can be our primary point of contact for a specific area—people who know the region inside out. They might even offer local tips, points of interest, or become a valuable reference for others mapping or traveling to the same area. Sometimes, these mappers even maintain detailed wiki pages for their city—outlining points of interest, transit routes, historical context, recent updates, or even personal anecdotes.


Meet Your Mappers

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Hello everyone!

I’m Ayush Dhar Dubey, a 2nd-year undergraduate student at Indian Institute of Technology Roorkee, pursuing my major in Civil Engineering. While my academic roots lie mostly in reinforced concrete and structural design…software development and open-source have become equally foundational to how I think about solving real-world problems.

I’m thrilled to share that I’ve been selected for Google Summer of Code 2025 as a student developer with OpenStreetMap (OSM). My project, under the mentorship of Lonvia and Tordanik, is titled “Modernize the 3D Model Repository (3DMR)”.

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What is 3DMR and Why Does it Matter?

The 3D Model Repository (3DMR) is an online platform that allows contributors to upload openly licensed 3D models and link them to OpenStreetMap features. Tools like OSM2World can then render realistic 3D views of real-world locations using this data.

See full entry

Location: Sahijna, Tenar, Garhwa, Jharkhand, 822114, India
Posted by Raquel Dezidério Souto on 19 May 2025 in English. Last updated on 19 June 2025.

Want to learn how to map buildings after a disaster? Learn about the BAR/HHI Methodology, applied to mapping with OpenStreetMap and JOSM


On May 19, 2025, we successfully held the workshop Post-disaster mapping with OpenStreetMap and JOSM, in Brazilian Portuguese, promoted by the company IVIDES DATA and the group of young Brazilian mappers, YouthMappers UFRJ, and given by Séverin Ménard, from Les Libres Géographes.

Leia em Português

IMG VIDEO 1


Recommendations and demonstration videos are also available in the guidelines section of the Mayotte’s projects on the HOTOSM-TM.

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Today, Monday 19th May 2025, Made me one week at my IT, And so far i can say it has been great for me, Topping the chart, mapping over Thousands of building just in one week. Yes i sign up for this, that’s why I’m here to lead and take the topflight. Saying about today, I got the opportunity to teach and lecture one of my new IT College on what OpenStreetMap Is, His name is Alex though, And it was fun throughout the whole process. For fact, i know a lot is gonna come my way through this program, which I’m waiting for it and ready for success!!!

Location: Rumuosi, Obio/Akpor, Rivers State, 500004, Nigeria
Posted by OG Alex on 19 May 2025 in English.

So today i learned what is mapping and how to map and i mapped some building. it was a beautiful experience and i really enjoyed it. i met a guy called fortune he taught me almost everything i learned about mapping he is and easygoing guy, i still met a lot of fun people that will make learning easy. When i started i first learned what is mapping the site used for mapping which was later introduced as OSM US tasking manager. after that i created my account did my first mapping under the supervision of fortune and when he checked what i did and approved it i continued with some project he gave me and i finished 2 mapped task.

An open, cross cutting feature request for streetcomplete, everydoor, organicmaps and anyone else who targets mobile data capture.

  • Ask for location detection (yup), device activity sensors (maybe not already asked for)
  • If I am detected in the same place and that place has a shop=* or amenity=* for 5-15 minutes
  • Activity detected is “still” or similar (I put my phone down, or walked around a shop)
  • Can I please get a nuanced prompt at some point either then or within a few hours?
  • And limit current notifications to 1

Particularly for cafes, restaurants, pubs, etc.

Why: Google maps does this for reviews, to great effect. Ask me, while I am at a restaurant, with a physical menu “Is the cuisine vegetarian?” Or “what’s the website?” (Often printed on menus) Ask me, while I am a cafe, “is there outdoor seating?”

The problem this solves is often I don’t know when a favourite place is missing data. I go there all of the time, why wouldn’t it be mapped?

Give me a “no thanks” option so if I don’t want the intrusion I can opt out easily. But if I hit “yes please, nudge me”…

Following various discussions and requests over the previous years, I’ve adapted parsing of the machine-readable osmc:symbol tag in waymarkedtrails for route symbols to cover more use cases. The new implementation comes a bit closer to what is specified on the wiki website, most notably now supporting a second foreground, but also extending the list of supported backgrounds. This posts gives a bit of background on the changes.

Supported syntax

The official specification of the osmc:symbol tag always had the issue that it largely relies on guessing the function of its parts from their content. A part called red_bar? Must be a foreground description because there is no “bar” background and the content looks to be too long to be a text description, too. This is a viable way of describing something but not very robust against typos and it makes it very hard to extend the value set. waymarkedtrails has therefore implemented a subset of the specification that could be parsed in a way that the function is determined from the position of the parts. This subset was essentially: waycolor[:background[:foreground[:text[:textcolor]]]] Unfortunately this approach made it impossible to support the second foreground when it popped up on the wiki page and that has left users confused ever since.

User mueschel has recently re-analised the format and came to the conclusion that we can still keep the positional approach when sticking to the following combinations of part descriptions:

waycolor:background waycolor:background:foreground waycolor:background:foreground:foreground2 waycolor:background:foreground:text:textcolor waycolor:background:foreground:foreground2:text:textcolor

The one officially allowed variant that isn’t covered is waycolor:background:text:textcolor. Luckily this variant isn’t really used in practice with very minor exceptions. And it can easily be made compliant by adding an empty foreground: waycolor:background::text:textcolor.

See full entry

Hello fellow mappers, I’m Ezekiel Kiariro, a passionate GIS and remote sensing expert based in Tanzania, and I’m truly honored to be nominated as a 2025 Voting Member of the Humanitarian OpenStreetMap Team (HOT). I’ve been mapping since 2020, and what began as curiosity quickly turned into a calling. Today, I serve as the GIS & Open Mapping Manager at GeoTE Tanzania, where I lead and support various community-based mapping initiatives across the country. I’m excited to share a bit more about myself, what HOT means to me, and how I hope to contribute as a voting member.

What Does HOT Mean to Me?

To me, HOT is a movement that embodies equity, collaboration, and action. It’s about creating open, accessible geospatial data to solve real-life problems, especially in vulnerable and underserved areas. HOT represents a community where people from different backgrounds use open mapping as a tool for change, resilience, and empowerment.

How I Got Involved in HOT and Mapping

My journey started through Youth Mappers and university training sessions in Tanzania. Inspired by the potential of OpenStreetMap to support humanitarian response and planning, I became an active mapper, trainer, and later a national organizer. Since then, I’ve:

  • Organized local and national mapathons and Open Data Day events
  • Supported field data collection using OSM-based tools
  • Co-led the GeoTE-Tanzania Field Training Program, a five-week initiative to integrate OSM into university curricula
  • Mentored young mappers and helped local communities map their own spaces, such as informal settlements and health risks From mapping roads and buildings in disaster-prone areas to leading sessions on NDVI and land cover classification using OSM-integrated datasets, I’ve seen how open mapping directly contributes to decision-making, planning, and community resilience.

Why I Want to Be a Voting Member

Being a voting member gives me the chance to:

See full entry

Location: Madizini, Morogoro Municipal, Morogoro Region, Coastal Zone, 67104, Tanzania
Posted by rphyrin on 18 May 2025 in English.

Although I read the newspaper (almost) every day, lately I’ve been getting news faster through my social circle. It usually starts as a rumor from an online friend, popping up on my timeline :

“There’s a new bus route coming to town!”

“Look at this photo I took— they’re testing the route!”

“I tried the trial run. Here’s a draft of the route I recorded myself.”

That’s what I’d been hearing for the past few weeks.

And then, finally, that rumors showed up in the daily newspaper I read.

See full entry

I am honored and humbled to introduce myself as one of the nominees for the 2025 Humanitarian OpenStreetMap Team (HOT) Voting Membership.

My name is Adamu Muhammad Adamu, a geographer, mapping advocate, and dedicated leader from Gombe State, Nigeria. I currently serve as the President of the National Association of Geography Students (NAGS) at Gombe State University, where I also lead our active YouthMappers chapter—a platform that has significantly shaped my journey into open mapping, humanitarian work, and global collaboration.

  • What HOT Means to Me

HOT represents more than an organization—it is a movement that embodies inclusion, empowerment, and action.

To me, HOT stands at the intersection of technology and humanity, where data becomes a tool to respond to crises, build resilience, and bring visibility to marginalized communities. It is through HOT that young people like myself have found a purpose in contributing to real-world solutions, bridging the gap between global challenges and local realities.

  • My Journey into Mapping and HOT

My engagement with HOT began in 2020 through YouthMappers. What started as curiosity evolved into a passion and a responsibility to serve. I joined mapping campaigns, led training sessions, and participated in field data collection. In time, I became a mentor and mobilizer, encouraging others to see maps not just as tools, but as voices for the voiceless.

In 2024, I was proudly selected as a Leadership Fellow to represent my country in Bangkok, Thailand, and now selected as a Volunteer Regional Ambassador for YouthMappers in Nigeria, a role through which I support chapters across the country, encourage inter-campus collaboration, and promote open mapping as a vehicle for humanitarian and sustainable development.

  • Selected Projects and Community Impact
  1. Kwakwambe Village Mapathon – Adamawa State.

See full entry

Brazil Singh on a Field Mapping, Supporting HOT & Open Mapping Hub's Dhaka Thrive Project in Bangladesh

Hello OpenStreetMap and HOT Community,

I’m Brazil Singh, from Bangladesh, and I’m honored to be nominated as a 2025 Voting Member of the Humanitarian OpenStreetMap Team (HOT). I want to take this opportunity to share my story, what HOT means to me, and how I hope to contribute as a voting member.

I currently serve as an Open Mapping Guru at the Asia Pacific Hub and as a Regional Ambassador of YouthMappers. Through these roles, I’ve been able to support my community and contribute to open mapping efforts across the region. I’m also actively involved with the OpenStreetMap Foundation’s Communications Working Group, where I help strengthen global community engagement and communications.


What HOT means to me

See full entry

Location: 23.764, 90.389
Posted by cybermapper on 18 May 2025 in English.

I will stop editing here after more than year of contribution because of various reasons, mainly political reasons.

I feel like continuing to support the project which is politically involved in mapping scope is not my moral thing to do anymore.

OSM’s ridiculous policy about who controls the ground, those determine the border is far more ridiculous than occupation itself. I am not surprised that these people do not understand what is international recognition means. The policy of “who controls the ground” is simply supporting any “invasion / annexation / or whatever term here” and running away from the reality of internationally recognized borders. If OSM is run by Europeans or Americans or Russians (who support their invasions and military presence in Moldova, Ukraine and Georgia) I am not remotely shocked. Because if they understood, world would not have been this trash since WW2.

I have seen it first time when I was removing fake Armenian names from the Karabakh area (was under occupation in between 1992 and 2024), DWG contacted me about not removing them because they have talked to Armenians who felt nostalgically bad about those. I was in utter shock for an American in DWG who did not think about occupation a second, but being fully biased on occupiers side asking how they would feel.

The same goes to Russo-Ukrainian war, for some reason they show Donbas as Ukraine area while it is under occupation, but showing Crimea not as a part of Ukraine while it is under annexation and occupation.

Same situation is with Georgian occupied areas.

I am familiar with double standards of Europeans, so no surprise here at all. You guys can enjoy mapping with disputed areas and changing borders every day.

Good luck to you all!

Posted by MugerwaHukasha on 17 May 2025 in English.

I’m a skilled cartographer and GIS professional with expertise in mapping, spatial analysis, and information visualization using various software, including ArcGIS, QGIS, AutoCAD, ACAD, and OpenStreetMap. I create informative maps, conduct network analysis, and perform connectivity studies to drive insights and inform decision-making, leveraging my skills in GIS mapping, spatial analysis, and cartography to deliver high-quality solutions and contribute to projects that require spatial analysis, mapping, and data visualization.

Location: Nsooba, Kawempe, Kampala, Central Region, Uganda