[SoC] GSOC Weekly Report 1: Schematization Plug-in for QGIS
Nishith Maheshwari
nshthm at gmail.com
Fri May 23 13:01:12 PDT 2014
Hi all,
Please find the GSOC Weekly report 1 in the following email.
*Weekly report 1*
*What was done this week?*
- During the bonding period it was decided after discussions with the
mentors that we would create the plug-in by integrating it with the already
existing functions of Processing
Toolbox<http://www.qgis.org/en/docs/user_manual/processing/toolbox.html>.
So this week mostly took to getting acquainted with various different
functionalities of the toolbox.
- For simplification of geometry,
QgsTopologyPreservingSimplifier<http://www.qgis.org/api/classQgsTopologyPreservingSimplifier.html>class
will be used as the implementation is similar to Douglas Peucker
algorithm and also gives us the advantage of preserving the topology. There
were some errors in the output for some data sets but otherwise it is
working good enough. Those errors are reduced if we are merging small
segments of the lines and then splitting them at the intersection before
simplification.
*What is the plan for next week?*
- Implement a basic plug-in which removes objects smaller than a certain
threshold. This would be a good start and will provide an initial setup for
the plug-in and act as a base for it. This function for removing the
smaller objects might create topology errors, so this would be available as
an option in the plug-in.
More details at : http://hub.qgis.org/wiki/quantum-gis/nishithm
Thanks and regards,
Nishith Maheshwari
Lab for Spatial Informatics
IIIT Hyderabad, India
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