You should also look at the FATHOM software which is developed by
Intelligent Space Partnership as this software is being actively developed
to add other properties too. See
http://www.intelligentspace.com/tech/fathom.htm
This is being used in many projects at present
Mike Batty
At 14:26 15/10/02 +0100, Alasdair Turner wrote:
>As I understand it, Sanjay's software emulates other isovist polygon
>construction tools such as Omnivista and Spatialist by working with line
>intersection tests (please correct me if I'm wrong, Sanjay).
>
>By contrast, it sounds like Bernhard is trying to look at the properties of
>viewsheds here. In which case there is work by people such as Marcos
>Llobera, see : Llobera, M, 1996, "Exploring the topography of the mind:
>GIS, social space and archaeology".
>
>In addition O'Sullivan and I took up VGA properties in landscapes briefly
>-- where we took graph measures of clustering coefficient and mean shortest
>path length and applied them to landscapes. It sounds as if you are
>already doing this! Of course, there are many other graph properties that
>could be examined in viewshed analysis.
>
>Specifically for your application to viewsheds, you might find centre of
>gravity, distance of centre of gravity from viewpoint (I think what Sheep
>and Ruth Conroy call drift?) and moment of inertia, than other
>Benedikt-style measures such circularity, which apply to single isovist
>polygons rather than viewsheds.
>
>Alasdair
>
>--
>Alasdair Turner
>Lecturer in Architectural Computing
>Bartlett School of Graduate Studies tel +44 20 7679 1806
>UCL Gower Street London WC1E 6BT fax +44 20 7813 2843
>
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