Hi Josh, I would suggest to send questions to the grass user and/or developers list ( https://grass.osgeo.org/support/mailing-lists/).
Best wishes, Paulo On Thu, Nov 23, 2017 at 9:50 PM, Joshua Quesenberry <[email protected]> wrote: > Is it normal for an r.walk over an area of 10,500 acres to use up 12GB of > HD space and want more? That’s using up every bit of space I have left, so > it’s crashing out. I tried setting the maximum cost to 10 and I think 1 > also, but the algorithm keeps running for a long time making these really > large files… > > > > Thanks, > > > > Josh Q > > > > *From:* Joshua Quesenberry [mailto:[email protected]] > *Sent:* Thursday, November 23, 2017 12:05 PM > *To:* [email protected] > *Cc:* [email protected] > *Subject:* GRASS r.walk > > > > Happy Thanksgiving Everyone! > > > > Who’s very familiar with GRASS r.walk? I’m finding some tutorials and man > pages with examples but having trouble applying what I’ve found. I’m trying > to create mobility models for use with lost person analytics. > > > > Does is matter what format the input layers are in? Should they all be UTM > since that’s in meters? Or is it smart enough to mix and match WGS84 and > UTM layers? And along the same lines, does my DEM need to have cells in > meters? Most of what I get comes native in WGS84 with altitudes in feet, so > if I don’t need to add extra steps converting to UTM and cells to meters > that’s a good thing. > > > > For the friction layer, the example on the man page appears to use > landclass96 and only has 7 classifications… the NLCD 2011 land > classification file I have has 30-40 classifications ranging from 11 to 95, > does anyone have friction costs that can be applied to this data? Or at the > very least some idea of the best method to use to come up with those values > myself? > > > > Thanks! > > > > Josh Q > > _______________________________________________ > QGIS-Developer mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer >
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