On Fri, 2008-04-11 at 16:09 +0200, Frederik Ramm wrote:
> Hi,
>
> > Hang on - I doubt you've got enough disk space to do that. That's
> > terabytes of space you'd need.
>
> I have a neat little Perl script that tells you some details about the
> various zoom levels. These are *theoretical* values, I'd be interested
> to hear from operations. Here's the output (values are colon separated):
Here are the stats from tile.openstreetmap.org for each zoom level. This
includes every tile which has ever been looked at on the Mapnik layer in
the last 6 months or so.
zoom tile count limit % of limit
--------------------------------------------------
0 1 1 100
1 4 4 100
2 16 16 100
3 64 64 100
4 256 256 100
5 1024 1024 100
6 4096 4096 100
7 16384 16384 100
8 65536 65536 100
9 262144 262144 100
10 1048576 1048576 100
11 2190208 4194304 52.22
12 2521856 16777216 15.03
13 4391616 67108864 6.54
14 8242176 268435456 3.07
15 13675904 1073741824 1.27
16 12613952 4294967296 0.29
17 23811328 17179869184 0.14
18 14342784 68719476736 0.02
-------------------------------------------------
Total 83187925 91625968981 0.09
As you would probably expect, we have every tile for the low zooms and
then the percentage of tiles drops off rapidly past zoom 10. We
currently have about 1/1000th of all the possible tiles.
These are taking 120GB of disk space.
Jon
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