Re: contour mapping

Thanks to all of you for your responses. This opens up a whole
new "field" of excitement for this ol' Grandpa.

--- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> Hi Nelson,
>
> Yes! I have wanted to do just that! Look for DLG and DEM files of
the
> area you are interested in. DEM's might be easier, elevation over
a X,
> Y grid. I like the increased contour information in the DLG's, but
they
> are harder to work with.
>
> http://edcwww.cr.usgs.gov/doc/edchome/ndcdb/ndcdb.html
>
> There are free DLG viewers available.
>
> I've been able to generate simple DXF files (BIG FILES), but I have
not
> been able to get the data into reasonable order, so that it can be
cut.
>
> I did some recent work with Gerber files and I think using a L-R
> recursive decent of a binary tree might be the answer.
>
> Depending on the scale you select, those buildings are going to be
quite
> small! 1:100K DLG, 1:24K DLG will be of interest.
>
> I'd like to explore this further.
>
> HTH
>
> Alan KM6VV
>
>
> npalen@n... wrote:
> >
> > Hello all--I've been wanting to CNC machine a scaled "relief map"
of
> > the wheat and cattle farm where I grew up in North Central Kansas
> > U.S.A. This consists of several hundred acres of rolling terrain
> > including the farmstead. All I have left are the memories and an
> > aerial photo of the buildings.
> > Would anyone have knowledge of what it would take to utilize data
> > from the U.S. Geological Survey (URL below) to program the
contours?
> > I would like to construct scale models of the buildings from
memory
> > and place them on what I envision to be about a 24" square "map".
> > The various "ponds" filled with something to simulate water would
top
> > it off! Can anyone please help me? Thanks. Nelson
> > http://navigation.helper.realnames.com/framer/1/262/default.asp?
> > realname=U%2ES%2E+Geological+Survey&url=http%3A%2F%2Fwww%2Eusgs%
> > 2Egov&frameid=1&providerid=262&uid=30116898