Here in BC they are set by municipal bylaw and renewed every 5 years. Very much stable enough to map in OSM.
Corey On Fri, Jan 11, 2019 at 2:27 PM Bernie Connors <bernie.conn...@unb.ca> wrote: > 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 >> > _______________________________________________ > Talk-ca mailing list > Talk-ca@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-ca >
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