[OSM-dev] Fwd: Osmosis - Cutting out a bounding box from a diff file (.osc)

sly (sylvain letuffe) liste at letuffe.org
Wed Sep 5 13:29:37 BST 2012


On mercredi 5 septembre 2012, Stéphane Henriod wrote:
> Hi again

yo, again,

> Does this mean that I can simply empty them regularly?

You can, but then applying diffs won't be possible at all. Those table are not 
only used to reduce memory usage of the first import, but also to hold all 
data to solve the problem I mentionned about diffs not having all 
informations of their constituent nodes in order to apply them.

> It looks to me like 
> Mapnik won't need them at all, but I might be wrong?

It depends on your mapnik style sheets, but my guess is that there are no 
reasons to use those table for rendering (They don't hold geometries)

-- 
sly
qui suis-je : http://sly.letuffe.org
email perso : sylvain chez letuffe un point org



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