If you even visited my lovely home town of Swellendam in the Western
Cape of South Africa onhttp://openstreetmap.org, you might have
noticed that the building footprints for the town are almost
non-existent. Building footprints provide a valuable way to understand
impacts of flood and other natural hazards, as well as being a valuable
source of context information when browsing the town map. It's Christmas
holiday season here in South Africa, schools have finished exams and
students have time on their hands.
This year Linfiniti Consulting is sponsoring 3 students (from left to
right: Jaocoline, Barbara and Nico in the image below) to capture all of
the building footprints in Swellendam. Of course I was inspired by
seeing the awesome work done by
AIFDR, GFDRR, ACCESS and BNPB and the HOT team in
Indonesia.
As well as building footprints they will also capture the
building:levels and building:walls attributes so that we can in the
future create a nice 3D extruded model of the towns buildings. The
students are new to the OpenStreetMap project and have a lot to learn
about capturing data fast and accurately, so it should be a great
holiday challenge for them!
If you want to grab the current dataset for the area they are going to
be working on, you can get it here (in osm format). I wrote a quick
and dirty script to get the osm dump from our area and calculate how
many ways each person has captured. The script is a simple python
flask app. I will probably flesh it out a little as time goes by to make
some pretty graphs and reports. In the mean time it just produces
something like this:
JPM : 3
Firefishy : 114
uip : 1
CorliJ : 1
thomasF : 11
Chalky White : 1
Burger : 137
Sumarie : 5
Jacoline : 188
timlinux : 28
Tromilemi : 2