dhis2-devs team mailing list archive

[Knut Staring <knutst@xxxxxxxxx>]

Unfortunately, the links below and my earlier research indicates that
the "preserve shared boundaries" feature may not be available outside
of proprietary tools. Still, for many purposes, it will be fine to not
have this, especially at low levels of simplification (resulting in
larger GeoJSON files, which will of course be heavier to get over the
internet and for the browser to handle). It is largely an empirical
question - I noticed the cracks when trying to create GeoJSON that was
small enough for world maps, which was a true struggle. One option
would be to provide users with a choice of whether the shapefile they
upload should be simplified or not, and hardcode a reasonable
simplification. Their other option would be to use Mapshaper (or ask
someone with a proprietary tool) to simplify before uploading.

Knut
---------- Forwarded message ----------
From: Johan Lemarchand <johan.lemarchand@xxxxxxxxx>
Date: Fri, May 21, 2010 at 3:15 PM
Subject: Douglas-Peuker and Simplification Program
To: Knut Staring <knutst@xxxxxxxxx>


http://www.cartoweb.org/downloads/vertexsimplification/documentation.html

http://groups.google.com/group/Google-Maps-API/browse_thread/thread/e5e865ddeeaa81ea?pli=1



-- 
Cheers,
Knut Staring