The route down the ramp at Torrington Place seems to me to be relatively
unproblematic. If you are mapping 'private space' (within an individual
building curtilage) it should be there as it provides real access to the
back door and the way into CASA. The more problematic street segments on OS
Mastermap are the very short bits that go round traffic bollards in the
middle of roads and at junctions - perhaps it is these that give rise to the
curve at the tail of the distribution? Sticking to geometry based
definitions seems to me to be much simpler than semantic or heuristic
definitions for this kind of thing.
Alan
>
> Lucas
>
> A question: If we include, following 'TeleAtlas' for instance, to map such
> countless bits of space as 'The ramp to the car park at 1-19 Torrington
> Plc' or 'The entrance to the emergency services at UCH' into a street
> network, could it change its degree distribution from a 'log-normal' to
> a 'power-law'? If so, can we really claim that the degree distribution of
> street networks does not follow a power law but a log-normal?
>
> Regards,
> Hoon
>
>
> >On Thu, 31 May 2007 19:24:49 +0100, Lucas Figueiredo
> ><[log in to unmask]> wrote:
> >
> >>On 31/05/07, Rui Carvalho <[log in to unmask]> wrote:
> >>> Pitty no one knows what a street is...
> >>
> >>Certainly it is not a segment (or route) between two junctions.
> >>Otherwise we would have things like "Oxford Street sector A, B, C" and
> >>so on...
> >
> >The ramp to the car park at 1-19 Torrington Plc. This comes in GPS car
> >navigation systems as a decision point? is it a street?
> >
> >The entrance to the emergency services at UCH (that's UCL Hospital for
> non
> >Londoners). Is it a street?
> >
> >This question appears when you process data from services like TeleAtlas
> -
> >the most accurate data available on street networks...
> >
> >Looks like Alan should organize that 'mass observation' on what a street
> >is after all...
> >
> >Comments welcome!
> >
> >Rui
> >
> >
> >>
> >>Regards,
> >>
> >>Lucas Figueiredo
> >>http://www.flickr.com/photos/lucasfigueiredo/
> >>
> >>Mindwalk
> >>http://www.mindwalk.com.br
> >========================================================================
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