+1<br><br><div class="gmail_quote">On Mon, Mar 4, 2013 at 2:54 PM, Markus Metz <span dir="ltr"><<a href="mailto:markus.metz.giswork@gmail.com" target="_blank">markus.metz.giswork@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I would like to propose a project for the next Google Summer of Code:<br>
<br>
The current implementation of Vect_break_lines() is causing a lot of<br>
headache for larger vector maps with high spatial detail.<br>
Vect_break_lines() is already much faster in G7 than in G6, but still<br>
sometimes so slow that the procedure appears to make no progress at<br>
all. There are a number of published alternatives on to how find<br>
intersections between two lines, most of them based on the<br>
Bentley–Ottmann algorithm. The best one or two, according to<br>
literature review, should be implemented in the GSoC project. Benefit<br>
to users: faster import of non-topological vectors, faster cleaning of<br>
vectors with topological errors. Some more detail is on the wiki page<br>
for GSoC 2013 [0].<br>
<br>
Markus M<br>
<br>
[0] <a href="http://grasswiki.osgeo.org/wiki/GRASS_SoC_Ideas_2013#Vector" target="_blank">http://grasswiki.osgeo.org/wiki/GRASS_SoC_Ideas_2013#Vector</a><br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div>Doug Newcomb</div><div>USFWS</div><div>Raleigh, NC</div><div>919-856-4520 ext. 14 <a href="mailto:doug_newcomb@fws.gov" target="_blank">doug_newcomb@fws.gov</a></div>
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