DXF importing

[N R A]

Firstly thanks to all who replied with suggests to my DXF importing 
problem.

I tried them out and have progressed - partly !

I can now export the parts of the model space, from Autocad for Windows, 
that form the groundwater protection boundary - problem is when the file 
is imported into GRASS. The v.in.dxf runs with no reported errors, but 
when I try to run v.support I get a 'degenerate line' error. It only 
seems to happen to one of the lines in the boundary. The remaining bits 
all look OK.

What is this 'degenerate line' and how can I solve the problem. 

I'm also a bit worried that I can export a DXF from Autocad for Windows, 
that Autocad then says is incorrect ??

Steve Culshaw
NRA North West
e-mail : nra at cix.compulink.co.uk (use this for general usage)
or         sculshaw at cix.compulink.co.uk (Private - only checked at best 
biweekly)