[Talk-ca] Importing buildings in Canada

[John Whelan]

The Stat Can data comes directly from the municipalities so each 
municipality will have a different quality of data.  The Microsoft and 
NR Can data maybe more consistent.

Both your input and Nate's are useful in that at least they confirm my 
thoughts that there is little chance of moving forward on a Canada wide 
basis.

Hopefully the Toronto mappers can sort something out for Toronto and the 
rest will follow in time.  I seem to recall Montreal thought it would 
sort something out internally was it as soon as they reached three 
mappers per square kilometer?

Thanks John



Jarek Piórkowski wrote on 2019-09-27 7:47 PM:
> On Fri, 27 Sep 2019 at 11:45, john whelan <jwhelan0112 at gmail.com> wrote:
>> I do know that a number of departments and agencies would like to use buildings and although they can use the open data sources using OSM would be more convenient.
> Then you can encourage these agencies to urge Statcan to improve the
> quality of their data.
>
> If we expect some volunteers to come up with a building squaring
> algorithm and implementation, surely an agency whose whole job is
> collecting and massaging data can do better.
>
>> I'm not sure what if anything is happening at the moment.
> Nothing.
>
>> My gut feeling is with three sources of data we'll see new mappers importing in buildings without going through an import process.  Are we content to let that happen?
> It seems basically impossible to prevent this, and given the number of
> active editors in Canada who care about this, would be difficult to
> even detect this. That would make the question of whether we're
> content about it moot.
>
> That's the effect of strict import guidelines here - those who would
> like to keep to them usually give up, and those who don't care (or
> don't know) go ahead anyway. (See, for example, trees in London, Ont.)
> That works in Germany which has 3 nitpicking OSM editors per square
> kilometer to notice, less so in Canada.
>
>> Have whoever it was who was going to come up with a preprocessing plan done so?
> There's been work towards this but my understanding is that it's far
> from complete and stalled.
>
>> Can we get a consensus about what to do next?
> I don't believe so. Sorry - you asked.
>
> Thanks,
> --Jarek

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