On 30/05/07, Alan Penn <[log in to unmask]> wrote:
> Agreed - an argument for a (comparatively) well defined concept like the
> axial line perhaps? :-)
In hierarchical terms axial lines are ill defined. Some streets are
fragmented into several axial lines while others are not. Therefore
axial maps throw streets in both directions in the rank-plot, either
fragmenting or aggregating. Without mentioning that many axial lines
are projections of curves in the 3D space. Therefore, the
fragmentation of curves in 2D is not justifiable.
Continuity maps have a unified strategy: aggregate until a threshold,
therefore all "streets" are moved to the upper rank. In this sense
they are better defined.
The question is the threshold. Can we aggregate radial streets and
create circles? So on...
Regards,
Lucas
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