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<DIV><FONT color=#000080 size=2 face=Arial><SPAN class=508125721-06032020>Hi
All,</SPAN></FONT></DIV>
<DIV><FONT color=#000080 size=2 face=Arial><SPAN
class=508125721-06032020></SPAN></FONT> </DIV>
<DIV><FONT color=#000080 size=2 face=Arial><SPAN class=508125721-06032020>a
general geospatial question to all: </SPAN></FONT></DIV>
<DIV><FONT color=#000080 size=2 face=Arial><SPAN class=508125721-06032020>I am
trying to find out if there is any existing geospatial algorithm (in any
open Open Source Geospatial software) that would allow to use a network of
lines as a start point and expand those in such a way that I can create new area
boundaries for each of the lines "coverage area". What I mean with that is if
one could "buffer" the lines out in such a way to create boundaries where any
potential buffers would meet at the middle way point between the lines so that
in the end I could have an area within that is the starting line. On example
could look like this (5 hand drawn lines in red and corresponding colored
areas that I would want to create). Note that is exact but to communicate the
idea) see <A
href="http://terra5.terragis.net/sites/html/aeras_for_lines%20copy.png">http://terra5.terragis.net/sites/html/aeras_for_lines%20copy.png</A></SPAN></FONT></DIV>
<DIV><FONT color=#000080 size=2 face=Arial><SPAN
class=508125721-06032020></SPAN></FONT> </DIV>
<DIV><FONT color=#000080 size=2 face=Arial><SPAN class=508125721-06032020>It's
kind of similar to Thiessen polygons but for lines instead of
points...</SPAN></FONT></DIV>
<DIV><FONT color=#000080 size=2 face=Arial><SPAN
class=508125721-06032020></SPAN></FONT> </DIV>
<DIV><FONT color=#000080 size=2 face=Arial><SPAN class=508125721-06032020>One
preference would be if there was something that could be used programmatically
on large data sets ...</SPAN></FONT></DIV>
<DIV><FONT color=#000080 size=2 face=Arial></FONT> </DIV>
<DIV><SPAN class=508125721-06032020><FONT color=#000080 size=2
face=Arial>Cheers</FONT></SPAN></DIV>
<DIV><SPAN class=508125721-06032020><FONT color=#000080 size=2
face=Arial>Karsten</FONT></SPAN></DIV>
<DIV><SPAN class=508125721-06032020><FONT color=#000080 size=2
face=Arial></FONT></SPAN> </DIV>
<DIV align=left>
<DIV><SPAN style="FONT-SIZE: 11pt; FONT-FAMILY: 'Verdana','sans-serif'">Karsten
Vennemann<BR></SPAN><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: 'Verdana','sans-serif'"><SPAN
style="COLOR: #003264"><A
title="http://www.terragis.net/
blocked::http://www.terragis.net/"
href="http://www.terragis.net"><FONT title=http://www.terragis.net/
color=#0000ff>www.terragis.net</FONT></A></SPAN></SPAN><?xml:namespace prefix =
"o" ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></DIV>
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