Ran a fun Palestine Open Maps mapathon yesterday with Yara Sa'di-Ibraheem. She's researching communications infrastructure in Palestine during the British colonial era, so we extracted the telecom infrastructure in the historical maps using the Tasking Manager, based on Yara's paper: https://doi.org/10.1016/j.polgeo.2024.103242

We got a lot of work done! Blue squares are the ones that have been worked on. There's a long way to go, but good progress.

#PalOpenMaps #uToronto #OSM #mapathon #OpenHistoricalMap #hotosm

3/ this area was significantly reshaped by a rerouting of NY 43 a few years back now; it looked a bit different when i first moved to this area. but then, this is about #openhistoricalmap, now isn't it. so the old highway alignments are part of the point. Washington Avenue used to be the route of 43, that long curve to the south didn't exist, and certain roads weren't cut off by the construction of the new 43 ramp.

1/ currently working on this in #openhistoricalmap
i'm working through a document from the Rensselaer Land Trust website, a detailed, well researched discussion of the "Albany Road" that ran from Bath (north end of modern Rensselaer) NY to Williamstown MA in the late colonial period. the route through Bath ran up the hill on Rensselaer Ave (modern Forbes), then followed Washington, crossing the modern US 4 corridor and then following modern NY 43 (except when it didn't.)

In January, the #OpenHistoricalMap community added 65,731 dated elements, 9,668 buildings, and 15,303½ railroad miles. The average age of a dated element rose by more than 7 years, and the average year shifted more than 4 years earlier. All this with the help of 39 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

Tomorrow at 7 PM, join the local #OpenStreetMap and #OpenHistoricalMap community for #SouthBayMapNight! We’ll continue working on data imports and help anyone who’s new get the basics of contributing.

RSVP at https://osmcal.org/event/4485/ or https://www.meetup.com/bay-area-openstreetmappers/events/313180734/

concept for a historical data science project im working on. europe, 1938.
written with python (osmnx and folium); map data from #openstreetmap and #openhistoricalmap

In December, the #OpenHistoricalMap community added 55,351 dated elements, 13,877 buildings, and 8,959 railroad miles. The average age of a dated element fell by 8 months, and the average year shifted one year later. All this with the help of 31 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

The biggest things that happened in #OpenHistoricalMap development over the past 6 months 🧵

https://forum.openhistoricalmap.org/t/staying-afloat-wikimedia-logins-ancient-writing-and-more/642

In November, the #OpenHistoricalMap community added 62,421 dated elements, 21,441 buildings, and 8,072½ railroad miles. The average age of a dated element fell by 17 months, and the average year shifted one year later. All this with the help of 35 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

En 2013, un groupe de personnes (@ohm) lança "la carte la plus universelle, détaillée et périmée du monde" : Open Historical Map https://www.openhistoricalmap.org

12 ans plus tard, je l'ai découverte :-) via son intégration au logiciel de généalogie libre #gramps

#OpenHistoricalMap

It is such a nice feeling when you find that last source that allows you to add something to OpenHistoricalMap after scouring old newspapers. I've been adding old theaters in my home town and have been making nice progress.

#OHM #OpenHistoricalMap

It was a privilege to introduce the software #internationalization and #localization community to #OpenHistoricalMap (and #OpenStreetMap and @maplibre) at #UTW2025. Join us in mapping yesterday already!

#i18n #l10n

In October, the #OpenHistoricalMap community added 87,784 dated elements, 28,666 buildings, and 15,202½ railroad miles. The average age of a dated element fell by 15 months, and the average year shifted one year later. All this with the help of 40 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

In the past five weeks, the #OpenHistoricalMap community added 78,430 dated elements, 10,580 buildings, and 20,439¼ railroad miles. The average age of a dated element fell by 21 months, and the average year shifted 17 months later. All this with the help of 30 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

trusting the process...
when processes work, it's important to trust them. a few months ago, i found a rendering glitch associated with some natural/landuse closed ways in #openhistoricalmap
i did the thing you're supposed to do, i characterized the issue as best as i could in a ticket, and waited patently. i have been rewarded, the rendering in the historic map of the magic kingdom at wdw is now significantly better. time to finish the landuse. #DisneyWorld

https://www.openhistoricalmap.org/?#map=18/28.418117/-81.581951&layers=O&date1995-06-05&daterange=1825-01-01,2025-12-31

大山駅はちょうど使う駅ではないのと、高架化で大規模に変わるのが決まってるので描くんだったら #OpenHistoricalMap にやったほうがおそらく史料として良さそうというのがあってややノリが控えめになりつつある

¡Muchísimas gracias a @osmlatam por la oportunidad de introducir #OpenHistoricalMap a los mapeadores latinoamericanos con la charla por @rub21 y @mxn en #SOTMLatAm #SotMLatam2025 el sábado pasado! ¡Agradecemos el entusiasmo de todos y esperamos contar la geohistoria juntos!

https://commons.wikimedia.org/wiki/File:Mapeando_la_historia_con_OpenHistoricalMap.webm

¡Buenas días de #Medellín y #SOTMLatAm #SotMLatam2025! ¡Agradecemos a encontrar todos los mapeadores aquí! @rub21 y @mxn van a presentar sobre la tema de #OpenHistoricalMap el sábado.

In the past month, the #OpenHistoricalMap community added 71,946 dated elements, 12,256 buildings, and 10,475¾ railroad miles. The average age of a dated element fell by 13 months, and the average year shifted 4 months later. All this with the help of 30 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

A historical timelapse of the departments of Honduras on OpenHistoricalMap.

https://commons.wikimedia.org/wiki/File:Timelapse_of_Honduran_Departments.webm

#openhistoricalmap #honduras