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<p>Hi all,</p>
<p>I had a chance this morning to work on cleaning up some of the
already-imported data in Toronto. I wanted to be a little
methodical about this, so I picked a single typical block near
where I live. All the building data on this block came from the
import and I did everything in one changeset:
<a class="moz-txt-link-freetext" href="https://www.openstreetmap.org/changeset/66881357">https://www.openstreetmap.org/changeset/66881357</a><br>
</p>
<p>What I found was that: <br>
</p>
<p>1) Every single building needed squaring</p>
<p>2) Most buildings needed at least some simplification. <br>
</p>
<p>3) 42 buildings were missing. <br>
</p>
<p>I knew going in that the first two would be an issue, but what
really surprised me was just how many sheds had not been imported.
There are only 53 houses on the block, but 42
sheds/garages/outbuildings, some of them quite large, and none of
which had been mapped. <br>
</p>
<p>I haven't seen the quality of the outbuildings in the source
data, and maybe I would change my mind if I did, but I think if
we're going to do this import properly, we're going to have to
bring in the other half of the data. I had seen in the original
import instructions that small buildings were being excluded - was
there a reason for this?<br>
</p>
<p>I also want to say: given how long it took me to clean up and
properly remap this one block, I'll say again that the size of the
import tasks is way, way, way too large. There is absolutely no
way that someone could have carefully looked at and verified this
data as it was going in. I just spent a half hour fixing up
probably about one-hundredth of a task square. <br>
</p>
<p>We can do better than this!<br>
</p>
<div class="moz-signature">-- <br>
Nate Wessel<br>
<span style="font-size:10px;color:#777">Jack of all trades, Master
of Geography, PhD candidate in Urban Planning<br>
<a href="http://natewessel.com">NateWessel.com</a></span>
<br>
<br>
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