<div dir="auto">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.<div dir="auto"><br></div><div dir="auto">Bernie.</div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Jan 9, 2019, 2:45 PM Matthew Darwin <<a href="mailto:matthew@mdarwin.ca">matthew@mdarwin.ca</a> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>Hi Harald,</p>
<p>Thanks for your thoughts on this.<br>
</p>
<p>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
<a class="m_6152470822499539177moz-txt-link-freetext" href="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" target="_blank" rel="noreferrer">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</a>
or
<a class="m_6152470822499539177moz-txt-link-freetext" href="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" target="_blank" rel="noreferrer">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</a>
so just like a municipality boundary there is some physical info,
but of course doesn't tell you the exact boundary area. <br>
</p>
<p>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.<br>
</p>
<p><br>
</p>
<p>On 2019-01-09 12:34 p.m., Harald Kliems wrote:</p>
<blockquote type="cite">
<div dir="ltr">
<div>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.</div>
<div>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. <br>
</div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div> Harald.<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Mon, Jan 7, 2019 at 6:32 PM Matthew Darwin
<<a href="mailto:matthew@mdarwin.ca" target="_blank" rel="noreferrer">matthew@mdarwin.ca</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p><font face="Helvetica, Arial, sans-serif">Hello all,</font></p>
<p><font face="Helvetica, Arial, sans-serif">I'm not sure if
this applies to other provinces or not, so I thought I
would ask here.</font></p>
<p><font face="Helvetica, Arial, sans-serif">In Ontario
there is a concept of "Business Improvement Area" ("BIA"
for short) that has the power to tax businesses within
their zone (see <a class="m_6152470822499539177gmail-m_-4572369703235974165moz-txt-link-freetext" href="http://www.mah.gov.on.ca/Page1529.aspx" target="_blank" rel="noreferrer">http://www.mah.gov.on.ca/Page1529.aspx</a>
for details). <br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif">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.</font></p>
<p><font face="Helvetica, Arial, sans-serif">I am thinking
that the <b>relation type=boundary,
boundary=local_authority </b>might be applicable
here, and define either a Canada specific definition
maybe just Ontario, depending if the concept exists
elsewhere.<br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif">I would like to
get people's opinion on this idea.... Or please suggest
something else.<br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif"><br>
</font></p>
<p><font face="Helvetica, Arial, sans-serif"><a class="m_6152470822499539177gmail-m_-4572369703235974165moz-txt-link-freetext" href="https://wiki.openstreetmap.org/wiki/Tag%3Aboundary%3Dlocal_authority" target="_blank" rel="noreferrer">https://wiki.openstreetmap.org/wiki/Tag%3Aboundary%3Dlocal_authority</a><br>
</font></p>
<ul>
<li><tt dir="ltr" class="m_6152470822499539177gmail-m_-4572369703235974165mw-content-ltr" style="background:rgb(238,238,255) none repeat scroll 0% 0%;font-size:1em;line-height:1.6"><a href="https://wiki.openstreetmap.org/wiki/Key:type" title="Key:type" target="_blank" rel="noreferrer">type</a>=<a href="https://wiki.openstreetmap.org/wiki/Tag:type%3Dboundary" class="m_6152470822499539177gmail-m_-4572369703235974165mw-redirect" title="Tag:type=boundary" target="_blank" rel="noreferrer">boundary</a></tt></li>
<li><tt dir="ltr" class="m_6152470822499539177gmail-m_-4572369703235974165mw-content-ltr" style="background:rgb(238,238,255) none repeat scroll 0% 0%;font-size:1em;line-height:1.6"><a href="https://wiki.openstreetmap.org/wiki/Key:boundary" title="Key:boundary" target="_blank" rel="noreferrer">boundary</a>=<a class="m_6152470822499539177gmail-m_-4572369703235974165mw-selflink m_6152470822499539177gmail-m_-4572369703235974165selflink" rel="noreferrer">local_authority</a></tt></li>
<li><tt dir="ltr" class="m_6152470822499539177gmail-m_-4572369703235974165mw-content-ltr" style="background:rgb(238,238,255) none repeat scroll 0% 0%;font-size:1em;line-height:1.6"><a href="https://wiki.openstreetmap.org/wiki/Key:name" title="Key:name" target="_blank" rel="noreferrer">name</a>=*</tt></li>
<li><tt dir="ltr" class="m_6152470822499539177gmail-m_-4572369703235974165mw-content-ltr" style="background:rgb(238,238,255) none repeat scroll 0% 0%;font-size:1em;line-height:1.6"><a href="https://wiki.openstreetmap.org/w/index.php?title=Key:local_authority:FR&action=edit&redlink=1" class="m_6152470822499539177gmail-m_-4572369703235974165new" title="Key:local authority:FR (page does not
exist)" target="_blank" rel="noreferrer">local_authority:CA</a></tt><tt dir="ltr" class="m_6152470822499539177gmail-m_-4572369703235974165mw-content-ltr" style="background:rgb(238,238,255) none repeat scroll 0% 0%;font-size:1em;line-height:1.6">=BIA</tt></li>
</ul>
<p><br>
</p>
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-- <br>
<div dir="ltr" class="m_6152470822499539177gmail_signature">Please use encrypted
communication whenever possible!<br>
Key-ID: 0x34cb93972f186565</div>
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