[OSM-talk] River Avon in Mapnik

[David Groom]

It depends on how you see things but it could be both a tagging and a rendering problem.

The riverbank was originally derived from the PGS coastline import script, and the data then tidied up by me.

The import script tagged the riverbanks as natural=coastline, and I left it as such for two reasons:

1) no clear definition of where a coastline ends and a river begins when it is a tidal river.

2) In Osmarender the rendering of coastline areas in my opinion is a lot less problematic than rendering of river areas, with a coastline all you have to do is ensure the "segments" point the right way, with water on the right,

However Mapnik ignores all natural = coastline tags, as it generates the coastline from I believe a modified version of the original shapefiles.

I'm rather hoping that when the relations concept is a bit more developed that the rendering of wide rivers might be improved, and be more consistent between mapnik and osmarender.

David

  ----- Original Message ----- 
  From: mike 
  To: talk at openstreetmap.org 
  Sent: Tuesday, October 23, 2007 10:29 AM
  Subject: [OSM-talk] River Avon in Mapnik


  I just noticed the river avon is not rendered correctly in mapnik, from bristol channel down to the harbour:

  http://www.openstreetmap.org/?lat=51.4614&lon=-2.6407&zoom=13&layers=B0F 

  Osmarender does a much better job in this instance.  

  I wonder if this is a tagging issue or a rendering problem?

  mike




------------------------------------------------------------------------------


  _______________________________________________
  talk mailing list
  talk at openstreetmap.org
  http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
  De
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk/attachments/20071023/2c88c77c/attachment.html>