Thanks Christian,
This is very helpful.
You're right my data is static and as a test I'm already using the
shapefile option.
Tiling them takes only a few hours, so I'll stick to the shapefiles.
Thanks,
Paul
2012/11/23 cmaul <[email protected]>
> Paul,
>
> as far as I see your data are static. You will not need them once you have
> created the tiles.
> My experience is that databases require 4 -10 times more time to render a
> layer than local shape files.
> PostGIS is among the faster DBs and would be at the lower end of the 4 -
> 10,
> but not that fast that it could compete with shapes.
>
> If your region of interest isn't that big you shouldn't run into problems
> with space for the shape files.
>
> However, I would approach it the other way round: pixel size at the lowest
> scale is x.x mm a 256*256 tile covers thus y.y square metres which means
> you
> need z.z million of tiles for your bounding box, double that for all scales
> and that is the number you need to cut. A day has 86400 seconds and to get
> it done in x time you would need x tiles per second, which would be your
> target. Then cut the first ten levels and have a look. Or if you have it as
> one job in geowebcache, you will get a rough estimate about the tile number
> to be cut. If you can afford the time with a database then do it if not
> then
> use the shapes.
>
> Between the table and the view I would expect only marginal differences.
>
> Cheers
>
> Christian
>
>
>
>
>
>
> -----
> ____________________________
>
> Dr Christian Maul
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>
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