I have a road network as a table and another table which has a series of regions - a 
bit like a set of concentric circles which form donut regions, with each region not 
over lapping. what I need to do is calculate the length of roads within each donut 
region. I have several tables of historic road network (e.g. 1950 network, 1960 
network 1970...) and would need to the same calculations for each historic road 
network table.

I do not have MapBasic, is this something I can do easily in MapInfo through queries?

Brian Cowper

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