Hi, Whilst I am waiting for the book to arrive I have started playing a bit with the sample dataset of North Carolina. I am interested in the streets layer (dataset) since basiclaly I am about to do some routing work.
Can someone please be kind enough to explain to me what do these columns represent? frleft bigint, toleft bigint, frright bigint, toright bigint, frleft_a bigint, toleft_a bigint, frright_a bigint, toright_a bigint, one_way character varying(80), ft_cost numeric, tf_cost numeric, shape_len numeric, length double precision, Also what is the difference between shape_len and length please? My main concern are the one_ways and how I should treat them please. Any help will be extremely appreciated! Regards Matthew -- Matthew Pulis URL : http://www.solutions-lab.net MSN : [EMAIL PROTECTED] ICQ : 145951110 Skype : solutions-lab.net
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