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On 6/9/06, Rui Carvalho <[log in to unmask]> wrote: > > As you are well aware, there is no rigorous definition of axial lines, so > one can only claim to develop algorithms inspired by those. But anyone who > claims to be able to generate axial lines may as well be selling you snake > oil -to this day, they remain algorithmically undefined. Hi - I'm confused, Rui, could you say ( in simple terms an architect like me could follow) in what way axial lines are undefined in a way that GIS road center lines are ? x Reb p.s If road centerlines are equally undefined then just don't reply to this mail.