I have tried increasing the memory allocated to JOSM but it is still a very slow process. The most convenient way for me would be to download the Geofrabik file for derbyshire when I need and update but it looks like a merge with the derbyshire prow will take an hour or more at the current rate of progress.
Osmosis is unfortunately producing an error. SEVERE: Thread for task 1-rx failed org.openstreetmap.osmosis.core.OsmosisRuntimeException: Node -272236 does not ha ve a version attribute as OSM 0.6 are required to have. Is this a 0.5 file? So it seems the file format may not be right. I'm afraid the other types of analysis are a bit beyond me but it would be a useful tool to have is someone can highlight prows not mapped. To be useful it would need frequent updates and enable walks to be planned to cover the ground. I guess having some stats would be nice to monitor progress. I do put in the designation on paths etc. when I find they are missing. At the moment I only put in new footpaths if I have walked them. I assume this is what others have done before in my part of the world and it would seem the right approach at the moment and possibly a selling point for OSM maps in the future. It seems a good approach given there is already reasonable coverage but it may not be so applicable where there isn't. Something for debate perhaps. Many thanks for the responses. Regards Dudley Date: Sun, 28 Jul 2013 17:33:21 +0100 From: [email protected] To: [email protected] CC: [email protected] Subject: Re: [Talk-GB] Finding Unmapped public rights of way Hmm, I have sitting on my desktop a whole load of QGIS analyses of OSM designation=* against the DCC rowmap TAB file, but as I'm on my way to SotM Baltics wont write this up until I get back. I haven't looked in detail, but basic use of buffers seems to grab most matching footpaths (buffer OSM data, and then use the buffered data to clip the DCC PRoW data). Obviously crossing paths are also captured, but it should be relatively easy to find only those footpaths where more than n% of the route is within the buffered OSM path. So far I've used buffers of 10, 50 and 100m against the OSM data. I havent loaded the TAB file into PostGIS as there was some kind of geometry problem. Jerry On Sun, Jul 28, 2013 at 3:33 PM, Phil Endecott <[email protected]> wrote: Dudley Ibbett wrote: I'm trying to make use of the row files on rowmaps for derbyshire and staffordshire and and merging these with and osm map file to then produce maps that can highlight which paths are and aren't mapped. Thanks for doing this. One suggestion - it would be great if the disgnation=public_footpath/bridleway tags on existing paths could be tidied up at the same time. Last time I looked, too few had these tags to be able to use them exclusively to identify footpaths, and the other tag combinations tend to have many false positives. Regards, Phil. _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
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