Hi all,<br><br>I'm using v.net.iso on a very large dataset (National Road Network for Ontario, Canada - 497879 lines) to determine drive-time 'rings.' I'm experiencing extremely long calculation times. Since it's a very large dataset, I'm not entirely surprised. However, my initial tests were done using GRASS 6.3.0 under QGIS 0.11.0 and I stopped the process after 5 full days of running. After these 5 days, it was still at the "Building Graph" stage. I did a search, and found a thread here: <a href="http://trac.osgeo.org/grass/ticket/224">http://trac.osgeo.org/grass/ticket/224</a> which seemed like a good fit.<br>
<br>Hoping that this was the solution, I downloaded GRASS 6.4.0RC3-2 via OSGeo4W, and ran the same command on the same dataset--this time it quickly proceeded to "Build Graphs" but got hung up on "Registering Arcs" where it sat for for 24 hours with no progress. Instead of waiting endlessly, I stopped the process, and am writing this in hopes of another solution.<br>
<br>My question--is the fix outlined in the thread above implemented in GRASS 6.4.0RC3-2 via OSGeo4W? If so, how long should such a process expect to take? If not, what is the easiest way to get the code with this fix? I'm not very experienced with building from source, versioning, etc. but willing to learn if necessary.<br>
<br>Current system: <br>Windowx XP Pro<br>Pentium 4 3.00GHz<br>2.49 GB of RAM<br><br clear="all">Darren Cope<br><a href="http://dmcope.freeshell.org">http://dmcope.freeshell.org</a><br><a href="http://bluesignweekly.blogspot.com/">http://bluesignweekly.blogspot.com/</a><br>