"Here’s where it gets interesting — GCJ-02 is based on WGS-84, but with a deliberate obfuscation algorithm applied to it. The effect of this is that there are random offsets added to both latitude and longitude, ranging from as little as 50m to as much as 500m
(...)
it’s against the law in China to convert GCJ-02 (obfuscated coordinates) into WGS-84"
@Saint_loup@MoritzBrouhaha This is very interesting. Wonder what the situation with #OpenStreetMaps is? Seems like it would depend – some coordinates that are accurate, because they are based on satellite images, but others that are offset, if the person placing an amenity happens to have obfuscated position information.
Ontem, estivemos no Campus da Universidade do Minho no Open Knowledge Braga 2024, organizado pela @wikimediapt , para aprender e contribuir para o #OpenStreetMaps#OMS.
Também usámos aplicações móveis como a #StreetComplete que permite responder a perguntas sobre o local onde nos encontramos (se as escadas têm corrimão ou se têm rampas, que tipo de piso tem o chão, etc.) ou como a @everydoor que permite mapear pontos de interesse no OSM (até árvores! 😊).
I've been playing with #OpenStreetMaps via #osmnx, which is awesome , but I struggle with simple stuff like adding a bunch of places as markers. Everything looks a bit like the owl drawing meme, either showing something too easy and useless, or something too advanced and also useless or beyond my comprehension. Maybe some other Python tools?
(I know about Marcelo's fabulous PrettyMaps but it is not exactly a viz tool)
I know #matplotlib can do cartography (maps), and #osmnx uses it to plot stuff, but I can't find documentation or a decent tutorial to plot a base map and a list of latlong places as different sized circles. I'm struggling with #cartopy, in theory a wrapper to make mapping easier :((
Is it that hard or I'm just too dumb and/or I'm making everything wrong? #Python
My favorite thing about #OpenStreetMaps#OSM is that when I add a trail, people start using it more. Many popular apps use data derived from OSM and suddenly these trails are on their maps!
Réponse résumée de mon n+2, sous-directeur à la propreté urbaine, à mon initiative d’ajout des corbeilles de ville sur #Openstreetmaps : « Heuuu, en fait c’est mon taf, ça, normalement ».
Plot twist: o café fechou permanentemente mesmo!!!
As pessoas fazem coisas boas, as pessoas fazem coisas más... A gente se ajuda, a gente se prejudica.
Hoje na cota das coisas más:
Alguém marcou como permanentemente fechado no Google Maps, um café que eu vou de vez em quando no Paraíso, Duckbill da rua Cubatão. Não é nem o meu café preferido da região, que é o Fora da Lei, mas tem tomadas nas mesas, então para usar o computador é melhor.
Fui dar uma busca para mandar o endereço para uma pessoa e não tava achando, quando consegui achar, vi que estava marcado como fechado permanentemente... ai ai.
Well I've been hard at work improving the map of the Zambales region in the Philippines. Still working on it but users of map services that are based on OSM expect BIG improvements. Personally I can't wait to see the next organicmaps.app update. #Philippines#openstreetmaps#organicmaps#opensource
@RM_Transit so this took me down the rabbit hole of #AppleMaps and #OpenStreetMaps transit layers. Now I’m trying to understand the routes vs stops, and when bus routes show up like in the MKE screenshot below.
A lot of people over here in fedi use open street maps. Could both fedi software and open street maps work on being more inter-connected? Could than fedi posters help with adding reviews and descriptions to establishments and places? Could open street maps contribute map integrations and recreation discovery to the fediverse? #OpenStreetmaps#OpenStreetMap#OpenSource#Foss#Geography#Leisure#Meta
Frage zu #osmand und #openstreetmaps. Kann mir jemand erklären, warum OsmAnd diesen Feldweg hier in die normale Routenplanung auf dem Fahrrad einbezieht? Hab ich da in der App was falsch eingestellt? https://www.openstreetmap.org/way/70081265
Weil, im Sommer ist das alles zugewachsen und man sieht noch zwei Meter festgetretenen Schlamm, der sich zwischen Büschen verliert. Da fährt kein normaler Mensch mit dem Rad einfach so rein.
Ich habe seit gestern die #Android App #StreetComplete und kann damit sehr einfach Karten bearbeiten mittels simplen Fragen.
(iOS-Alternative wäre Go Map!! und dort die Quests aktivieren)
Alles was man dazu braucht ist ein Account auf openstreetmap.org
Bei Google Maps braucht man schließlich auch einen Google Account.
Der Unterschied besteht darin, das hier alle Apps davon profitieren, die auf #OpenStreetMaps zurückgreifen, dazu gehören unter anderem:
I'm no longer sure who it was on here, but some one recommended organic maps app as a privacy friendly alternative to Google maps, built on #openstreetmaps I've been trying it out the last 3 days and it is really brilliant. So 🙏 to whoever it was.
#OrganicMaps is here. Use it while offline and feel good about a #privacy-respecting app that doesn't suck you dry of your personal information. Based on #OpenStreetMap this app is gonna blow #Google#Maps out of the water (hopefully ;)
@smallcircles Are you able to upload your own base map layers? #OpenStreetMaps is fine for urban navigation but not particularly useful in the wilderness.
What do the right to repair movement, web browser privacy, and a volunteer rescue response to an earthquake have in common? They are all topics covered in our latest FSF Bulletin. Check it out at https://magazine.fsf.org/2023-spring/#WorkingTogether
> [T]he power of volunteers in free software communities, such as those working on #OSM development and #mapping, can exceed what #governments and #corporations merely pretend to provide.
Agree that #OpenStreetMaps is quite incredible, and their offline app, #OSMAnd really does feel like magic when one uses it. Its a real shame there are no ethical devices in #Australia to install OSMAnd onto.
Just donated $100 to the amazing Organic Maps project: Trackerless, fully offline, OSM based, open source mapping for Android/iOS. Great UX & routing, super fast & good coverage even of hiking paths, elevation lines & public transport layers...
From their website: "Organic Maps is one of a few applications nowadays that supports 100% of features without an active Internet connection. Install Organic Maps, download maps, throw away your SIM card (by the way, your operator constantly tracks you), and go for a weeklong trip on a single battery charge without any byte sent to the network."
Update: Some progress — I converted the network to a geodataframe and filtered it by the "name" column, it feels very awkward yet and I'm not sure what I'm doing.