[OSGeo-Edu] ACM SIGSPATIAL contest
Suchith Anand
Suchith.Anand at nottingham.ac.uk
Fri Feb 21 05:08:22 PST 2014
Hi Stefan,
Thanks for this info. There is also a QGIS Schematization Plugin that was proposed by Luciene Delazari along with Mark Ware and myself for this year's Google Summer of Code. Details below:
In the current version there are few tools for generalization (Dedicated to line simplification). It would be a great improvement to have some functions to create schematic maps, for example:
# Simplify lines - input data will typically contain redundant vertices. These are removed by application of a suitable line simplification algorithm (in our case the Douglas-Peucker algorithm). For example building on the QGIS generalize plugin
# topology - ensures that original map and derived schematic map are topologically consistent i.e yopology of the network is preserved during the schematization process.
# angular - if possible, edges should lie in horizontal, vertical or diagonal direction.
minimum edge length - if possible, all edges should have length greater than some minimum length.
In future, we can add more functionalities by adding constraints on Rotation, Clearance, Displacement etc.
http://hub.qgis.org/wiki/quantum-gis/Google_Summer_of_Code_2014
It will be good opportunity if we can implement this as plugin in QGIS.
Suchith
-----Original Message-----
From: edu_discuss-bounces at lists.osgeo.org [mailto:edu_discuss-bounces at lists.osgeo.org] On Behalf Of Stefan Steiniger
Sent: 20 February 2014 14:26
To: edu_discuss at lists.osgeo.org
Subject: [OSGeo-Edu] ACM SIGSPATIAL contest
Hi all,
the ACM SIGSPATIAL contest this year is about a map generalization task.
If someone has interest or interested students, please forward:
http://mypages.iit.edu/~xzhang22/GISCUP2014/
would be interesting to see also how standard FOS desktop GIS perform on this.
cheers,
stefan
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