[OSM-dev] tiles at home disk usage

Robert Hart bathterror at gmail.com
Wed May 2 17:11:03 BST 2007

> The existing info for coasttile data extended to level-17 is about as
> optimal as you can get: 2 bits per tile requiring only 4GB for all of
> level-17.

erm. so the 2 bits per tile at level-12 file, "oceantiles_12.dat" that
takes 4,194,304 bytes is more optimal than the 159,179 byte
"oceantiles_12.png" file that contains the same information?

Surely we could at very least run-length encode the data?


Robert Hart

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