<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.6000.16544" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>It depends on how you see things but it could be both a tagging and a
rendering problem.</DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>The riverbank was originally derived from the PGS
coastline import script, and the data then tidied up by me.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The import script tagged
the riverbanks as natural=coastline, and I left it as such for two
reasons:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>1) no clear definition of where a coastline ends
and a river begins when it is a tidal river.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>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,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>However Mapnik ignores all natural = coastline
tags, as it generates the coastline from I believe a modified version of the
original shapefiles.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>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.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>David</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mike@bristolbeat.co.uk href="mailto:mike@bristolbeat.co.uk">mike</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=talk@openstreetmap.org
href="mailto:talk@openstreetmap.org">talk@openstreetmap.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, October 23, 2007 10:29
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [OSM-talk] River Avon in
Mapnik</DIV>
<DIV><BR></DIV>I just noticed the river avon is not rendered correctly in
mapnik, from bristol channel down to the harbour:<BR><BR><A
href="http://www.openstreetmap.org/?lat=51.4614&lon=-2.6407&zoom=13&layers=B0F ">http://www.openstreetmap.org/?lat=51.4614&lon=-2.6407&zoom=13&layers=B0F
</A><BR><BR>Osmarender does a much better job in this instance.
<BR><BR>I wonder if this is a tagging issue or a rendering
problem?<BR><BR>mike<BR><BR>
<P>
<HR>
<P></P>_______________________________________________<BR>talk mailing
list<BR>talk@openstreetmap.org<BR>http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk<BR><FONT
face=Arial size=2>De</FONT></BLOCKQUOTE></BODY></HTML>