[Talk-GB] building shapes from OS Street View

[Andrew]

Tom Chance <tom at ...> writes:

> 
> 
> On 24 May 2010 15:24, Gregory <nomoregrapes <at> googlemail.com> wrote:
> 
> 
> Harry has done some good blog posts about London's gaps in buildings. But this
is an area with strong mapping activity. We can leave it to locals to trace
buildings in the gaps with some memory or to hold off if they know people are
surveying it this week. In cities & towns with no buildings at all, it's better
to leave these blank and when the mappers come they can work on it.
> 
> 
> 
> 
> I think that's a bit naieve.There are still lots and lots of "noname" roads in
London, particularly in the poorer parts of outer London. Road names are really
very easy to survey and add in.After all of TimSC's work there are large parts
of London without landuse areas.Whilst Harry's mapping parties have done wonders
for POIs in Central London, the rest of the city has very patchy coverage.Even
cycle routes are incomplete and cycle parking coverage is very limited.Mapping
buildings based on surveys for accuracy is laborious by comparison, and even
after a year or more of experimentation by a few brave souls a tiny percentage
of London has seen any activity.I'm inclined to support a mass import of
automatically traced buildings with a noname layer equivalent, or a modification
to noname, to aid verification and improvement by people such as myself who are
interested in doing buildings properly.Best,Tom
> 
> 
> -- http://tom.acrewoods.net   http://twitter.com/tom_chance
> 
> 
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I appreciate what TimSC has done and would like to see use made of it if someone
can give a legal opinion that the licence is rock solid, but I do not see us as
ready for a nationwide import yet; while there is no particular problem why
buildings should not run ahead of addresses, other places where the community
has to digest the results may come to light. Perhaps the answer is to convert
the building outlines to .osm files at this stage. I would be interested in
using this where I live.

It is also worth making notes of where we do not want to import buildings from
StreetView because it is out of date or there are better sources.

--
Andrew