OpenStreetMap 開放街圖
In my quest to understand the growth of OSM, I had a little fun today.
I took the 1/1/2017 full history dump for Brussels and I extracted a shapefile with all the versions of all the highway=* that ever existed.
Then I wanted to visualize it to see if there was a pattern in how the roads get mapped: “first real roads, then paths” or “everything all the time”. So I styled the paths clear green, the roads thin black and used a gray background for the current highways. Then I rendered a slide for every month.
It looks really cool, because it doesn’t just show the chaos of our growth. As the black roads are drawn slightly transparent and the monthly slide shows every version of the road in that month, “active areas” show up in heavy black. I think it’s really pretty.
On the occasion that it was a featured image in the Weekly OSM, I made a new version without a gray background and with a more logical image size.
You can download the individual images here and the shapefile (ugh, a shapefile) here
討論
由 tyr_asd 於 2017年01月18日 17時21分 發表的評論
Very nice! Did you use osm-history-renderer to extract the geometries from the history dump, or something else?
由 joost schouppe 於 2017年01月18日 19時09分 發表的評論
I do use the splitter and importer from that toolchain, but I used psql2shp to extract the data I needed. (I don’t know enough Postgres to be able to do much rendering directly from there, and the renderer itself uses the previous generation OSM rendering which I don’t know how to tweak)
由 derFred 於 2017年01月19日 07時22分 發表的評論
Pretty cool ;-)
由 jinalfoflia 於 2017年01月30日 13時23分 發表的評論
This is so cool! :-)
由 florinbadita_telenav 於 2017年09月13日 12時08分 發表的評論
On what version of linux did you used the importer ?
I`m trying to compile on 16.04, with no luck :(
由 joost schouppe 於 2017年09月13日 15時05分 發表的評論
I used Ubuntu 14 something. I have a vagrant file that does most of the installing, would that help you? That one does install a very old Postgress version, I’m not sure it would work with a newer version too. There’s also a recent thread (in Spanish); in Chile someone played around with this tool too.
由 florinbadita_telenav 於 2017年09月14日 07時19分 發表的評論
Hei, it would help, installing directly with the instruction does not seem to work.