[GRASS-user] v.generalize / reanimation of dead lines ?

[Hamish]

Peter:
> > when trying to derive a continous coast_line_ from the
> > GSHHS data set. For this, the data was reduced using
> > v.generalize (douglas, threshold=0.001).
> > 
> > Since the reduced coastline consists of several lines (with
> > individual categories), I tried v.build to snap them
> > together into a (hopefully) one long and friendly line.
> > 
> > Alas, v.build throws:
> > 
> > V2_read_line_nat(): Attempt to read dead line 26199
> > 
> > Any advice how to "reanimate" the dead lines ??


two ideas:
before:  v.build.polylines 
after:   v.extract list=1-999999

do lines actually seem to be missing or was it unclean deletion?


Hamish