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Hi,<br>
<br>
Could it be that you are hitting the size limit of the shapefile? I
have had problems like this trying to make Isoline for a very big
raster (all of Québec). The solution could be to split the
shapefile or maybe to change file formats (spatialite maybe???).
Look at the file size as it grows. If this is the problem, you will
see it stop growing after a while. Sometime, the algorithm does
not crash and it just keeps on going on. <br>
<br>
Nicolas<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">Le 2016-07-12 12:58, Cene Ketcham [via
OSGeo.org] a écrit :<br>
</div>
<blockquote style='border-left:2px solid #CCCCCC;padding:0 1em'
cite="mid:CAJe=wt=-sd1XVqHCx_V=nMPFJuH34ZET-paLb=NYydMt7hFB1A@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Hi,<br>
</div>
<div><br>
For the past week or so I have been trying to run the Chaiken
smoothing algorithm in v.generalize on a large shapefile, but
haven't been able to get it to actually complete. The closest
I've gotten is 83%. I was wondering if anyone has tips on
getting the function to complete or an alternate way to
achieve the same result.<br>
<br>
Details:<br>
<br>
</div>
The shapefile in question is a vectorized version of a landcover
raster with ~558K features. As a converted raster, it has
awful-looking stairstep boundaries between the polygons that I'd
like to smooth. This file is for a large (~8'x8') wall map, so
the raster-y borders are painfully obvious. Preservation of area
is not essential, as the desired output is for display only, but
it does need to maintain topological correctness. Therefore,
v.generalize seems like a natural solution. <br>
<div><br>
I just have a standard Windows workstation - not super
powerful, but no pushover either (Core i5 @ 3.3 GHz, 8 GB RAM,
Win 7).<br>
<br>
</div>
<div>I have tried in both QGIS 2.14.0 and 2.16.0 with the same
result: the progress bar stops updating and QGIS stops
responding. Any ideas?<br>
<br>
</div>
<div>Best,<br>
</div>
<div>Cene Ketcham<br>
</div>
</div>
<br>
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