Dear all
I have been mapping a few properties using Bing maps with local
knowledge supplemented by some physical measuring (tape measure or
simply pacing). I now want to ramp up my mapping but the challenge
especially in rural areas is that sometimes the outline of a building is
not clear - either obscured (e.g. trees) or unclear (e.g. decking or car
ports). Also some aerial imagery is offset. Also, most of the properties
are not along public roads. So my question is what are the preferred
methods for surveying that others are using?
I had thought perhaps a) simply sketches coupled with approximate
geolocation (GPS assuming I can get a decent fix on a mobile phone) but
perhaps b) using GPS linked to a laser rangefinder (e.g. identify
corners of buildings from a distance) or c) sophisticated cameras (3D)?
I realise that different mappers will be happy with different levels of
precision but wonder if in the UK how we can balance cost, time and
accuracy by selecting the best approaches.
Supplementary question, do you include or exclude conservatories, car
ports etc. from the main structure of the property?
I guess at the back of my mind is what do people perceive as the purpose
of mapping (hope I have not opened a can of worms).
Any thoughts/suggestions gratefully received
Nick
P.S. I am aware of some documentation e.g.
https://wiki.openstreetmap.org/wiki/Accuracy
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