[OSM-dev] A PostgreSQL extension for real-time simplification of objects in OSM API database

Christoph Hormann chris_hormann at gmx.de
Wed Nov 16 09:41:12 UTC 2016

On Wednesday 16 November 2016, RTOSM DOOPAS wrote:
> In short, rtosm is about to extend the OSM API to make it support
> viewing and editing data at any scale directly from database.

The OSM API's main purpose is two way data transfer in small chunks.  
Since you modify the geometry this rules out any editing and 
transferring data back.

For rendering/viewing your concept hinges on the idea that dropping 
nodes is a good way to simplify geometries for rendering purposes which 
is not generally the case.  Or in other words - you assume that your 
error metric accurately describes the perceptual error when viewing the 
rendered geometry (which is evidently not the case).

Christoph Hormann

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