[OSM-dev] MySQL GIS extensions - some tipps
Marcus at Wolschon.biz
Sat Jul 25 15:30:20 BST 2009
On Thu, Jul 23, 2009 at 8:35 PM, Andreas Kalsch<andreaskalsch at gmx.de> wrote:
>> How much would that be without filtering? Since I have no clue what
>> are "relevant tags and relations" for you.
> Relevant features are features which represent a GeoObject. Nodes which
> are just part of ways and ways which are just part of multipolygons are
> not relevant in this context.
Ah, I see.
As I need the ways that share a given node and tags on nodes
in ways are very important I would only store a POINT on the nodes
but not use any GIS-Extension on the ways. (such as POLYLINE)
Do I loose precision if I store the lat+lon of a node as a POINT
and convert it back?
I`m asking because I have an "edit"-button that exports the
currently visible area and starts the latest JOSM with it
so co-drivers can fix mistakes in the map right as the driver encounters
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