Contour lines to DEM

About

#nc_spm_08

g.region vect=elev_lid792_cont1m
g.region res=1 -ap

d.mon x0
d.vect elev_lid792_cont1m -z zcolor=elevation

v.to.rast in=elev_lid792_cont1m out=elev.1mcont \
  type=line column=level
r.mapcalc "elev.1mcont.100k = elev.1mcont * 100000"

r.surf.idw

(and r.surf.idw2)

r.surf.nnbathy

v.surf.rst

r.surf.contour

Reference images