[Talk-ca] Building Canada 2020
john whelan
jwhelan0112 at gmail.com
Thu Nov 22 15:34:47 UTC 2018
The wiki page currently has a very wide range of information which might be
too much for a casual mapper to digest.
https://wiki.openstreetmap.org/wiki/WikiProject_Canada/Building_Canada_2020
There are two parts mapping the building outlines and enriching the data.
Since the project has started many things have changed. Stats has managed
to make a slew of building outlines available under the federal
government's Open Data license.
Microsoft has released a large number of building outlines in the US and I
think it's a fair assumption that they will be doing the same for Canada
within a reasonable time frame.
These are both high quality data sets but will need verifying when imported.
My personal view is it is probably better to use these sources first than
to have mapathons with inexperienced mappers tracing buildings using iD.
In Ottawa we managed to enrich the tags on the buildings.
117491 detached
64173 house
59942 terrace
47997 yes
8204 residential
5757 garage
4147 commercial
2762 retail
2601 apartments
1551 barn
1420 shed
892 school
788 industrial
544 roof
488 static_caravan
etc
and we have an average of 3 to 4 associated tags on each building such as
building:levels etc.
https://www.jatws.org/johnw/ottawabuilding2018oct.zip
and I think its this enrichment of the data where we can best use local
mappers.
It would be fairly simple to have a graph showing how many buildings have
been mapped and tagged for a particular region. Would this be useful?
There are some CSVs in the zip file above if anyone wants to experiment.
Should we try to tailor the information on Building 2020 towards
inexperienced mappers to make it easier for schools etc to get involved?
What would be most useful?
Thoughts please
Thanks John
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