vector(lines) to raster

[H. Y. Lin]

Dear User:
     I am new in Grass and have a stupid question.  How to transfer Vector
map to Raster map which contains only lines ( just like rivers, roads).  
I know there is a command called " v.to.rast" ,but it can't solve my problem.
Does anyone know how to do it?
Thank You Very Much


| Hung-Yue Lin , 	Email:hylin at ev004.ev.nctu.edu.tw
| Institute of Environmental Engineering  Voice:011-886-35-712121-2929
| National Chiao Tung University          Voice:011-886-35-712171x2928
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