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Hello, my name is David Morais Ferreira! I like to tinker with open data and improve OpenStreetMap in Luxembourg.

Flag of Luxembourg.svg This user hails from Luxembourg.
OSM Logo This user submits data to OpenStreetMap under the name
Hot logo.svg Dmlu volunteers at Humanitarian OSM Team.
JOSM Dmlu submits data to OpenStreetMap using JOSM.
OsmAnd icon Dmlu uses OsmAnd, mobile map viewing & navigation app.

Flag of Portugal.svg Dmlu has mapped in Portugal.

I am a member of the Data Working Group.

To see what I’m currently up to, you can visit my Twitter @dmoraisferreira

Babel user information
de-4 Dieser Benutzer beherrscht Deutsch auf muttersprachlichem Niveau.
en-4 This user has near native speaker knowledge of English.
fr-3 Cet utilisateur dispose de connaissances avancées en français.
lb-N Dësem Benotzer seng Mammesprooch ass Lëtzebuergesch.
pt-1 Este utilizador tem um nível básico de português.
Users by language

Feel free to read my interview at

In September 2019 I was interviewed for OSMBE's project "Mapper of the Month", you can find the article by clicking here.

If you are looking for source code I wrote, you can (hopefully) find it on my GitHub profile.

To get in touch with me, you can write me a message on the OSM website, contact me on Twitter or contact me on IRC You can message me in English, French, German, Luxembourgish or Portuguese!

What do I do?

The following section contains links to various projects I am currently invested in:


Power Network in Luxembourg (January, 2019)

Visualization of the electrical power network in Luxembourg (January 2019) after a focused mapping effort that started around August 2018. The newly added power lines are drawn in green and the existing power lines are drawn in blue.