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Recent diary entries

I haven’t written anything in this diary yet, so I decided to just do that.

I have no idea any more when I first heard of OpenStreetMap. What I do still remember is the time where I didn’t know how to make changes myself. I noticed this mostly back around 2015 when I was using a GPS navigator based on OSM data, and often it didn’t bring me to the precise location because of missing house numbers. This wasn’t too bad, I was in the general vicinity, and I could mostly figure out where to go from there, but it was annoying, and I do remember two occasions where the same street was actually separate parts, making it hard to find out where I needed to be. I was thinking that it would be nice if I’d knew how to add those house numbers. Some I encounter along the way wouldn’t be much, but if everyone does a bit, a lot can be done was my idea.

Somewhere in 2021, I met Pieter who is very active in the Belgian OSM community, and he was nice enough to give me a deep explanation of how it all works and what tools there are and what I can do to contribute. I decided to write this explanation down in a blog post, and from that moment on, I started to contribute to OSM. I was also pleased to hear that the house number problem I was having, was mostly a problem of the past, as the government released the needed data under a compatible open license, and people of the community are making sure the data is put to good use.

See full entry

April 15–19, 2025, proved to be a special landmark in my mapping experience when I participated in the OSM Spring Mapathon 2025, sponsored by Youth Innovation Lab. I am excited to announce that I won the Beginner Category for 22,922 map changes!

This acknowledgement is meaningful to me—not only as a personal achievement, but also as a personal reminder of my growth since first hearing about OpenStreetMap (OSM) during 2021. At that time, OSM was merely another name, still learning its way into my periphery. Little did I realize the meaning that OSM would take on as an important part of my learning and contribution trajectory.

I committed a certain amount of time each day during the Mapathon to updating map data. Anything from adding roads, perfecting building footprints, or fixing map glitches and errors. Each change adding to a sense of satisfaction that somewhere someone would benefit from finally going through something that they could map out into a community, and their community becoming visible, sharing their data.

The event itself was inspiring. While Youth Innovation Lab was the primary host, the Mapathon brought together fellow mappers from across the land, and beyond. Each day’s schedule created an exciting and competitive environment that made staying sedimentary contagious.

Though I did not expect to win the Beginner Category, I am even more so grateful. The motivation of this experience is further proof that with the appropriate due diligence, sprinkling curiosity and learning, anything is possible!

HOT#OSM#Youth Innovation Lab# OSM Spring Mapathon2025

Posted by Dokdo on 21 July 2025 in Korean (한국어).

한국어(Korean)

제가 방금 OpenStreetMap wiki에 계정을 만들었는데, 편집할 권한이 없다고 뜹니다. 제가 문서를 편집하고 번역을 하기 위해서는 어떻게 해야 할까요?

 

 

Translated English

I just created an account on the OpenStreetMap wiki, but it says I don’t have permission to edit. What do I need to do to edit and translate articles?

Posted by anqixu on 21 July 2025 in English.

Hi guys!

Quick midterm update from me! Just as a little refresher, my name is Anqi and I’ve been working on the Transliteration of Search Results project this summer.

Time has really flown by and we are at the halfway point! Here I hope to give a summary of the work that’s been done so far, as well as what I hope to accomplish during the next part of the summer! We want to be able to return the transliterated name as a field during search results, with a proof of concept shown here! We can see in this proof of concept that the results are as expected, with the addition of one transliterated name field.

{
"place_id":100067,
"licence":"Data © OpenStreetMap contributors, ODbL 1.0. http://osm.org/copyright",
"osm_type":"way",
"osm_id":1307932969,
"place_rank":30,
"category":"amenity",
"type":"school",
"importance":-0.004452559995167061,
"addresstype":"amenity",
"name":"丹东市第六中学",
"display_name":"丹东市第六中学, 七纬路, 站前街道, 丹东市, 振兴区, 118000, 中国",
"transliterated_name":"Dan Dong Shi Di Liu Zhong Xue, Qi Wei Lu, Zhan Qian Jie Dao, Dan Dong Shi, Zhen Xing Qu, 118000, Zhong Guo",
"bbox":[124.3804784,40.1271951,124.3830593,40.1292045],
"geometry":{
"type": "Point",
"coordinates": [124.38176886493923, 40.12819985]
},

The general flow can be visualized as below.

See full entry

Posted by oldnab on 20 July 2025 in English.

RETEX: My Urban Recycling Trekking

To be continued, maybe:

  • diary entry (upcoming): choosing tags for this trekking
  • diary entry (upcoming): existential questions about my encounter with Panoramax

Context

Since April 2025, I’ve been discovering OSM and trying to contribute wherever I can. Needless to say, I’m learning something new every day about OSM mapping (thanks to the Wiki, forum, and fellow contributors).

While exploring my neighborhood, I added a voluntary drop-off point (for recyclable — though not always — waste) to OSM, located 800m from my home. I then discovered that the local intermunicipal authority has an app listing a large portion of the collection points. I wondered whether it was legally and technically feasible to retrieve those, and whether it would align with the OSM ethos.

The forum quickly (and kindly) set me straight (as I said, after only 2 months with OSM, I’m learning a lot every day):

  • Extracting data from a website’s database is obviously illegal unless there’s an explicit license that allows it.
  • Even if there were a friendly license (which is not the case here), it would still need to be ODbL-compatible to import the data into OSM.

This led me to pursue two parallel paths:

  1. Finding a sustainable solution via an open data source, which means:

    • Trying to convince the intermunicipality to publish its data, ideally on www.data.gouv.fr
    • Convincing them to make this publication sustainable (i.e., generate an export every time there are updates)
    • Assessing how, in theory, this data could be used (completeness, attribute matching, duplicate detection, handling conflicts between open data and on-the-ground data — which can either be better or simply incorrectly entered)
    • Finding out how and by whom the data could be imported
    • Seeing if all of this could happen before 2035
  2. Starting manual mapping myself through field visits (the foundation of OSM’s truth)

See full entry

Posted by oldnab on 20 July 2025 in French (Français).

RETEX : mon trekking urbain recyclage

à suivre peut-être :

  • entrée de journal(à venir) : les choix de tag pour ce trekking
  • entrée de journal (à venir) : Questions existentielles sur ma rencontre avec panoramax

Le contexte

Depuis avril 2025, je découvre OSM et cherche à contribuer sur ce que je peux. Autant dire que j’en apprends tous les jours sur le mapping OSM (merci WIKI, forum et autres contributeurs).

En m’intéressant au voisinage, j’ai ajouté à OSM un point d’apport volontaire (collecte de déchets recyclables - pas toujours -) à 800m de chez moi. J’ai alors découvert que l’intercommunalité locale avait une application recensant une partie importante des points de collecte et me suis demandé s’il était envisageable légalement et techniquement de les récupérer, puis si c’était conforme à l’esprit OSM.

Le forum m’a rapidement (et gentiment) recadré (quand je vous dit qu’avec 2 mois d’OSM derrière moi, j’en apprends plein tous les jours) :

  • récupérer des données d’une base de données via son site Web est bien évidemment illégal si aucune mention explicite de license ad hoc n’est faite
  • même si une license sympathique est exprimée (ce qui n’est pas le cas ici), encore faut-il qu’elle soit compatible avec ODBL pour l’insérer dans OSM.

Ce qui m’a conduit à deux axes d’action parallèles :

See full entry

Posted by Zverik on 20 July 2025 in English.

As you might know, we’re having OpenStreetMap Awards this year! Finally, after many skipped years, we will have the honour and the joy to recognize people and teams who have made an impact on OSM, whether it’s by mapping, writing, or coding!

The process is open, and the same as the last time: first we gather all the nominees we can think of, then some groups of notable OSM members will choose a few from those who feel to be the most notable, and after that — an open community voting to choose one for each category. And the categories are:

  • Core Systems Award — for building or maintaining an core project.
  • Innovation Award — for making something new.
  • Influential Writing Award — for blog posts, tutorials and documentation.
  • Greatness in Mapping Award — for tireless mapping!
  • Expanding the Community Award — for finding us more members.
  • Team Achievement Award — awarded to companies and groups.
  • Ulf Möller Memorial Award — like a lifetime archievement award for individuals.

Note that only achievements made or announced in 2024 or before April 1st, 2025 are eligible.

And right now, I need you help. The deadline for submitting nominees is looming, and we’ve got too few. Each category needs at least twenty to make sense, and for some, we got like two.

This needs some archive work. Like, open WeeklyOSM or big community discussions (before April 1st), and add people, projects, and teams you think made the OSM in general slightly better.

And submit them to https://awards.openstreetmap.org/

(Yes, we’ve got the official domain, thanks to Grant!)

이 도로가 계속 차로 수가 변경되서 같은 이름 다른 차로 수의 도로를 차로 수가 바뀔 때마다 끊어서 따로 새로 추가하고 있습니다. 도움 부탁드립니다.

도로 링크 : way/392677769#map=16/35.63247/129.43854&layers=N way/1416020854#map=17/35.624268/129.442173&layers=N way/1416020853 (산하중앙3로, 울산광역시 북구)

※일단은 정자동 등 제외하고 강동산하지구 부근(푸르지오1차/2차, 힐스테이트, kcc 등 아파트 모여있는 개발계획구역 쪽)만 편집 중입니다. 혹시나 정자동 쪽도 도움 주실 수 있으면 부탁드립니다.

Location: 산하동, 북구, 울산광역시, 44264, 대한민국
Posted by caseywittmier on 18 July 2025 in English. Last updated on 21 July 2025.

July 20, 2025 - After 17 months, I have reviewed every road in the NFSR network for the Siuslaw National Forest. Below is a summary of what was involved and the process I used.

Foundational elements

The foundational elements of this project are two public domain road datasets, the NFSR data from the United States Forest Service, and the OR-Trans dataset from the state of Oregon. NFSR is the reference for road numbers, names given to roads by the USFS, road surfaces, and geometry to a certain degree. The OR-Trans data is a reference for primary road names, geometry verification, and the tag formatting of USFS roads. I was able to use additional GIS from counties to verify geometries and primary road names.

Project management

QGIS was utilized as a way to manage the entire project. I used conditional styles on manually added attributes to break the 1,977 roads from the NFSR data into workable chunks, and to keep track of what I had done. Those workable chunks were exported as KMLs to use as a reference when working in iD.

Edits on OSM

I elected to use iD for this project to force myself to manually review everything I was doing, and to remove the possibility of an accusation of a careless import.

The NFSR data contains good geometry for the most part, but there are quite a few errors that are very significant. The NFSR data also contains several discrepancies from reality, such as roads being marked as closed and not open for use, despite the roads not being gated and definitely being actively used. Blanket replacing the geometry and tags in OSM without manual review would worsen the quality of OSM data.

This was also a good opportunity to do some TIGER cleanup and resolve road/water crossing issues. Unfortunately, with the nature of the crossing issues, resolving one can lead to getting flags for multiple others along the road or waterway, which can make it appear that you are creating these issues even though they were already present.

Tag formatting

See full entry

Północno-wschodnia Polska (Kurpie) Potrzebują pomocy!

Na terenie Kurpii (Łyse, Myszyniec, Kadzidło, Ostrołeka) brakuje wielu kluczowych elementów, aktualnych informacji, i zwyczajnego landuse’u.

Kurpie zasługują na dobrą jakość map, lecz ja sam, nie poradzę sobie z tym dosyć sporym regionem.

Apeluje o pomoc i wspólne działanie w tworzeniu dobrej mapy Kurpii!

Zapraszam wszystkich do wspólnego mapowania tego pięknego, ciekawego i historycznego regionu Polski.

Zachęcę po Kurpiowsku :

Dawajta, róbta to razem!

Location: Zaogrodzie, Wykrot, gmina Myszyniec, powiat ostrołęcki, województwo mazowieckie, Polska

Λογότυπο της ελληνικής κοινότητας του OpenStreetMap Καλησπέρα σε όλους και όλες,

Σας προσκαλώ στην συνάντηση της ελληνικής κοινότητας του OpenStreetMap στην Αθήνα. Ευκαιρία να μαζευτούμε οι χαρτογράφοι της Ελλάδας και να πιούμε έναν δροσιστικό καφέ μες την ζέστη του καλοκαιριού, ώστε να γνωριστούμε καλύτερα και να συζητήσουμε διάφορα σχετικά με το OSM. Και μετά να κάνουμε χαρτογράφηση στη γύρω περιοχή :slight_smile:

🗓️Ημερομηνία και ώρα: Σάββατο 26 Ιουλίου, 15:00
🔗Τοποθεσία: Piu Verde, Άλσος Παπάγου

Το Piu Verde εκτός από καφέ, προσφέρει και φαγητό, για όποιον θέλει μιας και θα είναι κοντά μεσημέρι.
Όσοι επιθυμείτε να παρευρεθείτε, συμπληρώστε το όνομα σας εδώ.

🗓️🔗Σύνδεσμος συνάντησης στο OpenStreetMap Calendar: https://osmcal.org/event/3920/

See full entry

Location: Παπάγος, Κοινότητα Παπάγου, Δημοτική Ενότητα Παπάγου, Δήμος Παπάγου - Χολαργού, Περιφερειακή Ενότητα Βορείου Τομέα Αθηνών, Περιφέρεια Αττικής, Αποκεντρωμένη Διοίκηση Αττικής, 156 69, Ελλάδα