[Qgis-developer] My first Qgis plugin - what next?
ole.moller.nielsen at gmail.com
Thu Dec 15 05:28:27 EST 2011
First up, thanks to everyone who helped me get started last week when I
tried my hand at writing QGis plugins for the first time. With the help of
the community and the nice environment QGis provides, it was a pleasant
experience to take these first steps.
I wish to give back to the FOSS community, so have written a small but
working plugin that calculates polygon centroids. The reason I picked this
task is that I had QGis crash when trying to calculate centroids for large
datasets. A test set with about 47,000 polygon features showing this
behaviour is OSM_building_footprints_20111115.shp which is available in
The new plugin uses numpy vector operations and does the same job in about
10 seconds (on my machine), so I think it will be useful. The source code,
installation instructions, test suite, screen shots and so on are available
The plugin still needs some work, mainly on the UI side, and if the
community finds it useful I hope someone will help doing that. The
outstanding issues that I know are recorded here
if anyone finds problems and issues, please report them here
I am not sure if this is the right forum for this - if it isn't please let
me know what the process is for contributing this kind of work.
Cheers and thanks
Ole Nielsen, Jakarta
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