On Tue, 27 Jun 2006 09:24:47 +0100, Alan Penn < [log in to unmask]> wrote:

>Lucas - don't worry about it, Rui doesn't know his math


Well, at least I know my Geography ;)

All the best,
Rui



>Alan Penn
>Professor of Architectural and Urban Computing
>The Bartlett School of Graduate Studies
>University College London
>Gower Street
>London WC1E 6BT
>+44 (0)20 7679 5919
>[log in to unmask]
>www.vr.ucl.ac.uk
>www.spacesyntax.org
>
>>
>> On 26/06/06, Rui Carvalho < [log in to unmask]> wrote:
>> > And that's where spatial networks are different: not only the
>> > elements are spatially located, but the relations between these
elements
>> are
>> > also spatial (i.e. the network is weighted).
>>
>> Please, may you send a well known reference where is clearly stated
>> that network representations of spatial systems must fit these two
>> criteria to be spatial:
>>
>> a) being embedded in space
>> b) also having spatial relations (Euclidian space prefferred)
>> - the graph cannot be unweighted
>>
>> I am serious, if this hypothesis is true:
>> "topological representations of spatial systems does not represent
>> spatial systems"
>>
>> I may have to change the topic of my PhD.
>>
>> > So re-read the email I sent this morning as many times as needed and
>> take a
>> > deep breath if you feel personal about it.
>>
>> ??
>>
>> Lucas Figueiredo
>>
>> CASA - Centre for Advanced Spatial Analysis
>> University College London
>> 1-19 Torrington Place
>> London WC1E 7HB England
>> E-mail: [log in to unmask]
>========================================================================