peermaps subdivided openstreetmap archive

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on ipfs: QmXJ8KkgKyjRxTrEDvmZWZMNGq1dk3t97AVhF1Xeov3kB4

on dat: 04ed0b08ff595a992a594ad1ab624072646467ec7eda2dc40e4aa512e49cb196

Using this shell script I've divided planet-latest.osm.pbf into 215836 .o5m.gz files (which osmconvert can read) and 14389 meta.json files.

Each .o5m.gz file is less than or equal to 1M, so running a tile cutter shouldn't require a lot of RAM, just time and disk space.

The branch factor of this subdivision is 16. The extents of each branch from 0 through 15, inclusive, is encoded in the meta.json file located in every directory. The values are [west,south,east,north] (wsen). Each key maps to a file $key.o5m.gz or a directory $key/ with its own files 0 through 15, inclusive, and a meta.json. Here's an example of what meta.json looks like:

{"0":[-22.5,38.68218745348944,-16.875,41.01449966573052],
"1":[-22.5,41.01449966573052,-16.875,43.432536557789774],
"2":[-22.5,43.432536557789774,-16.875,45.95137432591568],
"3":[-22.5,45.95137432591568,-16.875,48.590377890729144],
"4":[-16.875,38.68218745348944,-11.25,41.01449966573052],
"5":[-16.875,41.01449966573052,-11.25,43.432536557789774],
"6":[-16.875,43.432536557789774,-11.25,45.95137432591568],
"7":[-16.875,45.95137432591568,-11.25,48.590377890729144],
"8":[-11.25,38.68218745348944,-5.625,41.01449966573052],
"9":[-11.25,41.01449966573052,-5.625,43.432536557789774],
"10":[-11.25,43.432536557789774,-5.625,45.95137432591568],
"11":[-11.25,45.95137432591568,-5.625,48.590377890729144],
"12":[-5.625,38.68218745348944,0,41.01449966573052],
"13":[-5.625,41.01449966573052,0,43.432536557789774],
"14":[-5.625,43.432536557789774,0,45.95137432591568],
"15":[-5.625,45.95137432591568,0,48.590377890729144]}

Another nice thing about this data structure is that you can perform ad-hoc extracts for any extents by walking the meta.json files recursively to build up a list of files you can stream into osmconvert.

Previously:

• OpenStreetMap Viewer
• OpenStreetMap

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I replicated this pin to one more storage host