Not navigable rivers but roads. I think that,apart from allowing routing, a
one-line road allows for easy viewing and representing in GPS, rather than
two-lines road. In the case of rivers, i could create an area feature from both
sides lines if the river is wide enough, but when it is narrow,i prefer just one
line and set the line width to an appropiate value.

I know there's no an automatically way to do this with Globalmapper or Mapedit,
but maybe someone knows some procedure to do it...

Thanks for listening...

--- In map_authors@yahoogroups.com, "Rafael F. Aguilar H.-" <hoeger@...> wrote:
>
> Sounds like navigable rivers map?
>
> -Rafael
>
> On Thu, Nov 5, 2009 at 9:44 PM, Samson Luk <samsonluk@...> wrote:
>
> >
> >
> > I understand road center line data should be obtained from GIS provider and
> > in my country the government charging sky high for the data. BTW, why is
> > that important for this particular kinf of data on map making?
> >
> >
> > On Fri, Nov 6, 2009 at 1:30 AM, dasorsan <dasorsan@...<dasorsan%40yahoo.es>>
> > wrote:
> >
> > >
> > >
> > > Hi,
> > >
> > > I've some map data in wich roads and rivers are built with the two lines
> > of
> > > its borders. Id like to get the central line from them to make my Garmin
> > > maps... Is there any way to do it with software as globalmmaper, mapedit
> > or
> > > some other?
> > >
> > > Thanks
> > >
> > >
> > >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
>
>
> --
> Siempre
>
> Rafael F. Aguilar H.
> ______________________________________________
> Diagonal geparkt in einem parallelen Universum
> http://hoeger.com.ve/ventopo
>
>
> [Non-text portions of this message have been removed]
>