I can confirm the BIA boundaries are modified very infrequently in New Brunswick. I am not aware of any changes during the 10 years in my current job disseminating GIS data for for the province.
Bernie. On Wed, Jan 9, 2019, 2:45 PM Matthew Darwin <matt...@mdarwin.ca wrote: > Hi Harald, > > Thanks for your thoughts on this. > > From my point of view BIAs are just as (just as not) verifiable on the > ground as a municipality boundary. Typically there are gateway signs to > welcome you to the area, which makes them more concrete then say a census > area. eg > https://www.mapillary.com/app/?lat=45.331875926798006&lng=-75.892906002273&z=19.36453946996015&pKey=RopOOODg6gMzdE5gHeicfA&focus=photo&x=0.4894869294322967&y=0.5000000000000003&zoom=0 > or > https://www.mapillary.com/app/?lat=45.39710000000002&lng=-75.7423&z=17&pKey=pEs0qv8z4ielD2jmRpJhqw&focus=photo&x=0.11741761625032077&y=0.5560308877526301&zoom=2.639780018331806 > so just like a municipality boundary there is some physical info, but of > course doesn't tell you the exact boundary area. > > In my experience BIA boundaries don't change much one they are created.... > but of course I am not familiar of what happens outside of Ontario.... > certainly I wouldn't expect them to change more than the boundaries we > already have in OSM for municipalities and the wards within them which seem > to change change every decade or so in a growing/changing municipality. > > > On 2019-01-09 12:34 p.m., Harald Kliems wrote: > > To me this is a clear case of something that doesn't belong in OSM. It > sounds like the boundaries aren't verifiable on the ground and may change > frequently. Therefore any data in OSM would go stale quickly and the only > verification of accuracy would be to go back to the source. > Yes, we have deviations from the "verifiable on the ground" rule, but > we've had similar discussions for census boundaries, ridings/election > districts, and on the the talk-us list recently about Bureau of Land > Management boundaries. > > For your analysis of businesses within a BIA, you can just download the > OSM and BIA boundary data separately and do the analysis in the GIS > application of your choice. > > Harald. > > On Mon, Jan 7, 2019 at 6:32 PM Matthew Darwin <matt...@mdarwin.ca> wrote: > >> Hello all, >> >> I'm not sure if this applies to other provinces or not, so I thought I >> would ask here. >> >> In Ontario there is a concept of "Business Improvement Area" ("BIA" for >> short) that has the power to tax businesses within their zone (see >> http://www.mah.gov.on.ca/Page1529.aspx for details). >> >> I want to tag these in OSM, so then you can run a query to find all >> businesses within a BIA. Sometimes the boundaries of the BIA are very tight >> and just cover things that are actual businesses, and sometimes the >> boundaries of a BIA are very loose and cover lots of area including >> residential... and when a new business comes up later in that area it >> automatically is a part of the BIA. >> >> I am thinking that the *relation type=boundary, boundary=local_authority >> *might be applicable here, and define either a Canada specific >> definition maybe just Ontario, depending if the concept exists elsewhere. >> >> I would like to get people's opinion on this idea.... Or please suggest >> something else. >> >> >> https://wiki.openstreetmap.org/wiki/Tag%3Aboundary%3Dlocal_authority >> >> - type <https://wiki.openstreetmap.org/wiki/Key:type>=boundary >> <https://wiki.openstreetmap.org/wiki/Tag:type%3Dboundary> >> - boundary <https://wiki.openstreetmap.org/wiki/Key:boundary>= >> local_authority >> - name <https://wiki.openstreetmap.org/wiki/Key:name>=* >> - local_authority:CA >> >> <https://wiki.openstreetmap.org/w/index.php?title=Key:local_authority:FR&action=edit&redlink=1> >> =BIA >> >> >> _______________________________________________ >> Talk-ca mailing list >> Talk-ca@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-ca >> > > > -- > Please use encrypted communication whenever possible! > Key-ID: 0x34cb93972f186565 > > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca >
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