Hello... I have an application where I need to find the closest point

of approach of two parametric lines in threespace. Is there an example

of this 'in the literature' anywhere?

The two solutions I am aware of would look at either a) minimizing the

distance between the points defined by the line equations or b) using

a third line between two points on the line equations and finding the

parameters that make this third line perpendicular to the first two.

However, in both cases the algebra gets messy quickly...

Thanks for any pointers,

Les

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represent those of NSWC, the Navy,

Les Elkins or the federal government.

Naval Surface Warfare Center

Dahlgren Division (And anybody who says otherwise is

Silver Spring, MD itching for a fight...)