[Talk-GB] Finding Unmapped public rights of way

[sk53.osm]

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 <spam_from_osmgb at chezphil.org
> 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.
>
>
>
>
>
>
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