Hi Dave,
On 21 Feb 2008, at 16:36, Dave Rafkind wrote:
> Hi mapnik list, I'm a UMN Mapserver user but Mapnik looks very
> interesting to me because it pretty.
Thank you.
> However, Mapserver has one nice feature for interacting with ginormous
> shapefile datasets (such as the entire TIGER set with is > 12Gb): a
> 2-level spatial index ("TileIndex"), where the first level indexes
> entire data sets by extent, and refers to them by file path. The
> second
> level is the normal per-dataset index. This is useful for splitting up
> road data by state and county and makes quick whole-country map
> generation feasible.
>
> My question is, does mapnik have anything like this feature? Or is it
> fast enough not to matter, for generating map images on the fly?
There is no 'TileIndex' at the moment but thanks for bringing it up.
In the past I have implemented very similar approach for handling
very large raster data sets. I think it would be nice to have this
functionality in Mapnik, not sure 'TileIndex' is the best name though.
Would you mind submitting a ticket to trac.mapnik.org and I'll look
at ways to implement this.
>
> Thanks,
> Dave
>
Cheers
Artem
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