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<p>I'm changing the subject line to try and retain some clarity for
the mailing list. <br>
</p>
<p>James, thanks for the stats! I'm surprised this didn't remove
more points. <br>
</p>
<p>Steve, I mentioned earlier that 20cm is where I happened to draw
the line for the data we imported in Hamilton County, Ohio and I'm
not totally sure even that was ideal. A bit more than half of the
buildings we've been importing there have one (damned) extra node
which I've been trying to remove manually. I may have been a bit
too conservative there, as I didn't want to lose any part of the
geometry. Sometimes there are tiny bay windows and the like.<br>
</p>
<p>I'm wondering if the scope of this data warrants some analysis of
how simplification (and perhaps data quality generally) varies
geographically. It seems quite likely that every municipality
would have it's own quirks, and we might want to treat some places
differently. <br>
</p>
<p>Best,<br>
</p>
<div class="moz-signature">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>
</div>
<div class="moz-cite-prefix">On 1/19/19 7:24 PM, OSM Volunteer
stevea wrote:<br>
</div>
<blockquote type="cite"
cite="mid:C8872BB9-A801-4DF4-9848-83C9450D23CE@softworkers.com">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">On Jan 19, 2019, at 3:47 PM, James <a class="moz-txt-link-rfc2396E" href="mailto:james2432@gmail.com"><james2432@gmail.com></a> wrote:
Resending because these emails are getting over 40KB in size and talk list is spazzing out:
Original:
9.263 Average points per feature
Points:20346517
Features:2196329
Simplified (20cm): 8.425 Average points per feature
Points:18504036
Features:2196329
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
Choosing 20cm or higher or lower is where the "improvement?" line gets drawn.
In round numbers of nodes, call this a "10% reduction." The question is, are the results "improvement?" If so, it seems worth doing. (Only one person's opinion, of course).
Steve</pre>
</blockquote>
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