[Talk-GB] Marking landuse and field boundaries

[Graham Jones]

I guess it depends on what you think is 'difficult' - to actually survey
them means a lot of walking, so I tend to only add the ones that I can
remember when I get home, and get the routes from Bing.

I have just had another look and for dry stone walls, it is quite easy to
distinguish some in Bing images, which lends itself to armchair mapping,
but it depends on the direction of the sun - I feel I need the shadow to be
confident that it is a wall I am looking at and not a track.  But a
reasonable guess that there is a feature there is probably more use than a
sheet full of nothingness...so I have just spent 20 mins with bing imagery
adding walls to a hillside that I know has lots of walls on it, and I had
started adding quite a few from my last visit (
http://www.openstreetmap.org/?lat=54.74429&lon=-2.09388&zoom=16&layers=M).
  The suspicious gaps are where I can not tell/remember if there is a fence
to replace the apparently disappeared wall....   Wire fences of course are
much harder to spot....  I'll look for the errors next time I am there and
correct them...

Graham.

On 1 January 2013 11:15, Dudley Ibbett <dudleyibbett at hotmail.com> wrote:

> My main motivation for getting involved with OSM was to get a better
> walking map on my garmin.   To this extent I have been adding lots of
> barriers in the southern part of the Peak District.  So it is being done.
>  Whilst it is time consuming I wouldn't say it is difficult.  I do survey
> with a GPS and camera as much as possible, mainly on foot.  It can be
> difficult to determine the type of barrier from satellite imagery so having
> pictures to refer to makes it easier.  JOSM supports photo mapping really
> well.  You do need to check GPS tracks against the imagery and be prepared
> to adjust the imagery offset.  I wouldn't get overly concerned about the
> accuracy of the position of the barrier.  A fairly good job can be done
> with the existing tools available and people can always adjust as these
> improve.
>
> I must admit I don't map land use if it is farmland.  To me if it isn't
> mapped it is farmland.  It would seem a reasonable default.
>
> Please give barrier mapping a go as we are out there.
>
> Dudley
>
>
>
> Sent from my iPad
>
> On 31 Dec 2012, at 22:00, "Graham Jones" <grahamjones139 at gmail.com> wrote:
>
> I would like to see field boundaries and land uses in OSM, for the same
> reason as you.   I think the main reason that there are not many in there,
> is that they are very difficult to survey.  I have just added them from
> memory when I have been able to remember enough - it is more realistic to
> add them now that we have high resolution Bing imagery for countryside
> areas, but it is a lot of work, even from an armchair.
>
> Graham.
>
> On 31 December 2012 21:17, Steven Horner <steven at stevenhorner.com> wrote:
>
>> Personally I would love to see fields (landuse) and the walls/fences that
>> make this up marked on OSM but as per the Wiki this is a complicated area:
>> http://wiki.openstreetmap.org/wiki/Land_use_and_areas_of_natural_land
>>
>> I mapped a small area with landuse and some fences months ago but
>> refrained from doing anymore because not many others appear to be doing it.
>> You can see what I did here:
>> http://www.openstreetmap.org/?lat=54.72508907318115&lon=-1.7569917440414429&zoom=17
>>
>> Some of this I need to fix, it was my early days of OSM editing.
>>
>> I would love to use OSM one day as a replacement for Explorer (25K) maps
>> but until things like walls/fences are shown it would be hard to do. My
>> idea was to use the OSM to produce some walking guides in printed or static
>> form but they would need this data added for those areas.
>>
>> I know everyones view is different but do others on here use the landuse
>> and barrier=fence tags in the same way or does it make it look too
>> complicated.
>>
>> Steven
>>
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>>
>
>
> --
> Graham Jones
> Hartlepool, UK.
>
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>


-- 
Graham Jones
Hartlepool, UK.
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