by Pascal Neis - Published: May 28th, 2012
More than 6 weeks ago, I wrote a blog post about “Which country has the most OpenStreetMap GPS Points?“. You might remember that Russia and Germany provide the most OSM GPS points, as mentioned in the blog post.
Now, in a second step I created a worldwide grid, with an edge length of 15km, to show in more detail where the GPS points are located. The rendering of the tiles has been accomplished with the great TileMill software. Usually you would see some GPS noise in the grid cells above the equator. Thus, to eliminate this noise and to create a better overview, grid cells with less than 5 GPS points are made transparent. The following image shows an overview of Europe and the corresponding OSM GPS density. Of course you can also see some quite interesting and funny airplane, ferry or cruise routes.
However, I think the map overlay looks great and shows where the OSM GPS points are located. This information will also be published in the OSMatrix (thanks to Oliver Roick) within the next few days.
You can find my map here: http://resultmaps.neis-one.org/osmgps.html
PS: Below the map you will find a slider for the opacity of the GPS Grid Overlay, Enjoy!
thx @ maɪˈæmɪ Dennis for proofreading
thx @ *Fab* for creating the tiles/mapkey with MapBox’s TileMill