True distance

[Filippidis Vangelis]

Hi Grass community, 

Is it possible to calculate the true distance of a line using the 
3D Surface (DEM) ? (not by using the v.report !!!). 

Thank you in advance, 
Vangelis. 
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Filippidis Evangelos
Forester, Ph.D Candidate 
Sector of Planning & Natural Resource Development
Department of Forestry & Natural Environment
School of Geotechnical Sciences
Aristotelian University of Thessaloniki
Greece
e-mail : efilippi at for.auth.gr
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