[postgis-users] river network labeling
storma-ipb at indo.net.id
Mon Jan 26 09:20:46 PST 2009
I have two tables. One table consists of geometries of 100 rivers with its
tributaries. Each river and its tributaries (branches) is divided in more
or less 10 segments, so i have 1000 river segments in one watershed. Second
table cosists of segment attribute of each river such as
upstream-beginning-node (FROM) and downstream-ending- node (TO), segment
name, river name, water level, etc. How I can join both tables and have
segment attribute displayed in webmapping (f.e. Mapserver). I have ever seen
example in road labeling, where they have attribute for each segment suc as
fromleft, toleft, fromright, toright. What does this attributes refer to? Is
it also possible to SQL-query which river tributaries (branches) flow into
which certain river in this river network?
I hope my question does not take to much of your time.
----- Original Message -----
From: "Nicolas Ribot" <nicky666 at gmail.com>
To: <storma-ipb at indo.net.id>; "PostGIS Users Discussion"
<postgis-users at postgis.refractions.net>
Sent: Monday, January 26, 2009 8:34 PM
Subject: Re: [postgis-users] river network labeling
>> Dear List,
>> where can I find information on how to give label for river
>> network in a big watershed.
>> best regards,
> What do you mean by "to give label" ? do you want to update some
> attributes for a 'river' table, or do you want to display labels in
> some visual representation (desktop GIS, webmapping...) ?
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