On 20/03/2018 12:57, Julien Cochennec wrote:
Hi,
Newbie to OSM here, I'd like to contribute to the project, so I'm
reading the ten priorities.
Concerning the Data Type Area, I'd like to read any discussion about
tools and structures in any languages especially about Boolean Set
Operators (Union, Intersect, Difference, Xor), elementary way of
building an area and use of Clipper Algorithm
http://jsclipper.sourceforge.net/6.4.2.2/main_demo.html ...
The best description of the problem is probably the one at
https://wiki.openstreetmap.org/wiki/Top_Ten_Tasks#Area_datatype . It's
not really an "algorithm" problem (at least not initially).
What I'd suggest doing first is to become a bit more familiar with OSM,
and mapping your local area using the default "iD" editor is a great way
to start, because iD actually _does_ have a concept of areas, and
interprets OSM data as "area" or "non-area" as it goes along.
https://wiki.openstreetmap.org/wiki/Elements is also a good place to
start to see where OSM is now.
Best Regards,
Andy
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