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<p>Steve,</p>
<p>In my opinion this is where GRASS topological vector model
shines. One suggestion would be to import these vectors into a
GRASS location and let GRASS clean the polygons and fix the
topology automatically during import. My experience with similar
problems is that after the import and cleaning there would be few
if any errors of the sort you mention. In the worst case any
surviving error is found it could in principle be solved by
deleting the stubborn surface and digitizing it again. It will
definitely not take two weeks of work!<br>
</p>
<p>Good luck!</p>
<p>H.<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 2020-01-14 22:51,
<a class="moz-txt-link-abbreviated" href="mailto:smiller192@cfl.rr.com">smiller192@cfl.rr.com</a> wrote:<br>
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cite="mid:009601d5cb24$d9e48130$8dad8390$@cfl.rr.com">
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<p class="MsoNormal">All-</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I have digitized a land use/land cover
layer as individual polygons. The snap options were used and,
for most vertices, the snap was precise. A vertex in polygon
A has a precise match to a vertex in neighboring polygon B.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">But in 582 out of 2799 polygons, there are
mis-matches in adjoining vertices that are only evident if you
zoom into the layer at a magnification (i.e., a scale) of from
20000:1 to 40000 to 1. I have spent a couple of weeks trying
to remedy these by hand using the Vertex Tool and other
means. My question is this: is there an automated way in QIS
to detect and remedy these situations?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thanks,<br>
<br>
</p>
<p class="MsoNormal">Steve Miler</p>
</div>
<br>
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