vector(lines) to rast II

[H. Y. Lin]

 Dear Grass users:
     Thank you to solve my question.  But When I use "v.to.rast"
 to transfer the Vector map to Raster map.  It shows "Processing lines ...
  Floating exception (core dumped)" and no raster map occur.  I use v.digit to
 Lable my vector map(only contain lines) and Bulk them all in single catagory. 
 And use g.region to set the region of vector map.
 I don't know why it happened.  Does anyone know what's going on ?  Can you help me?
 Thanks a lot in advance

 | 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
 | Street: 75 Po-Ai Street, Hsinchu, Taiwan 30090, R.O.C.