OpenStreetMap 開放街圖
I’ve visualized OpenStreetMap’s node density from Frederik’s analysis of densely mapped locations:
(click for uncropped image - 8192x8192, ~1MB)
Every pixel stands for a single zoom-level 13 tile. The color represents the total number of nodes in that tile. Tiles with less than 1000 nodes are not displayed. A “low-res” version of this visualization is also available, which is based on zoom-level 10 tiles: (click to enlarge)
Copying: visualizations © cc-by-sa - source data © OpenStreetMap contributors, ODbL
How-To
In case anyone is wondering how these were made: I’ve used gnuplot to create the maps, after converting the source data with a simple sed-command. Read more about the actual steps and gnuplot-commands.
Slippy Map Version
There is also a slippy map version (updated yearly)! Check it out. ;)
討論
由 aseerel4c26 於 2013年06月28日 00時13分 發表的評論
Thanks! Looks like a to be featured image to me.
由 ajmas 於 2013年06月28日 13時20分 發表的評論
Good job.
Before reading the text, the first thing that this made me think of is the “Earth Lights” image from NASA: http://visibleearth.nasa.gov/view.php?id=55167 . Comparing the two shows that the number of nodes does not necessarily correlate with the amount of light produced.
由 aseerel4c26 於 2013年07月 1日 12時16分 發表的評論
Thank you for those images! They are now featured on our wiki main page this week.
由 tyr_asd 於 2013年07月 1日 12時38分 發表的評論
awesome! :)
由 sabas88 於 2013年07月 1日 20時56分 發表的評論
Awesome! Could you make a tileset (only low zooms..) like the one by MapBox on the geotagged tweets? http://www.mapbox.com/blog/visualizing-3-billion-tweets/
由 tyr_asd 於 2013年07月 2日 00時19分 發表的評論
Very good idea! Here you go: http://tyrasd.github.io/osm-node-density/
由 aseerel4c26 於 2013年07月 2日 02時27分 發表的評論
@tyr_asd: wow :-)
由 max1e 於 2014年06月17日 13時34分 發表的評論
hi, can you help me with: “convert to simple, gnuplot-readable text format” but from windows? sed-command works in windows console? if yes, how add way to file file.13 ? thanks
由 tyr_asd 於 2014年06月17日 14時06分 發表的評論
max1e, yes, you should be able to install and run sed also on Windows (ask google). This visualization is done only for nodes because the raw data analysis was done (by Frederik Ramm, username: woodpeck) only for nodes. If you want also ways, you’d have to repeat the analysis step, which could be a quite extensive task, I suppose…
由 max1e 於 2014年06月17日 14時26分 發表的評論
tyr_asd, can you show me screenshot or attach file (any image hosting, or file hosting) - view of tiles.13.txt inside? (Structure) because i dont understand what done function “s/([0-9]) z=([0-9]) x=([0-9]) y=([0-9])/\3 \4 \1/’”
In windows SED - renamed file from tiles13 to files13.txt, but file inside are empty. thanks
由 max1e 於 2014年06月17日 14時33分 發表的評論
huh, problem solved. http://www.c4dru.info/showthread.php?30036-GPS-based-light-map&p=227218#post227218
maybe anybody need this for win
由 tyr_asd 於 2014年06月17日 14時33分 發表的評論
max1e, sure, I’ll send you a personal message!
由 KyL0VV 於 2023年01月14日 23時23分 發表的評論
Is there a newer version since 2020 available? …I am just curious how the entries evolved.
由 tyr_asd 於 2023年01月15日 14時33分 發表的評論
@KyZEN: The slippy map version on https://tyrasd.github.io/osm-node-density/ is updated yearly (the last update was in June/July 2022). To compare different years, use the layer selector on the top right of the page.