Contours from Quad Map

[Anonymous]

What is the best way to create a surface from Contours on a Quad Map? Is
there a website that already has created DTM's?

[Anonymous]

I purchased a few quads of NJ from these guys very cheap. It came with
enough digital data (points & contours) to create decent surfaces of the
quads.

You will need some processing power & time since each quad was about 320,000
points.

John


"iampay02" wrote in message
news:5264666@discussion.autodesk.com...
What is the best way to create a surface from Contours on a Quad Map? Is
there a website that already has created DTM's?

[Anonymous]

Which guys?

Hello John Mayo John(AT)ConklinAssociates.com,

> I purchased a few quads of NJ from these guys very cheap. It came with
> enough digital data (points & contours) to create decent surfaces of
> the quads.
>
> You will need some processing power & time since each quad was about
> 320,00
> 0
> points.
> John
>
> "iampay02" wrote in message
> news:5264666@discussion.autodesk.com...
> What is the best way to create a surface from Contours on a Quad Map?
> Is
> there a website that already has created DTM's?

[Anonymous]

So sorry.

www.topodepot.com

John



"John Mayo" wrote in message
news:5264679@discussion.autodesk.com...
I purchased a few quads of NJ from these guys very cheap. It came with
enough digital data (points & contours) to create decent surfaces of the
quads.

You will need some processing power & time since each quad was about 320,000
points.

John


"iampay02" wrote in message
news:5264666@discussion.autodesk.com...
What is the best way to create a surface from Contours on a Quad Map? Is
there a website that already has created DTM's?

[Anonymous]

I should add that you can use their program to output dwg & dxf files of the
quads (contours, roads, names, etc.) you purchase as well.

John

"iampay02" wrote in message
news:5264666@discussion.autodesk.com...
What is the best way to create a surface from Contours on a Quad Map? Is
there a website that already has created DTM's?

[Carlg]

iampay,

I am not sure why you are wanting to use quads for any project that requires a surface. But be that as it may I would say that because of the in-accuracy issues and the large contour interval that you have with quad maps you could just digitize them into cad and then create the surface that way. You would have just as good a surface a lot cheaper.

Carl

[Anonymous]

And if you folks want "freebies" you can use this Website:
http://tinyurl.com/k3mbp

You'll just need to create a free Log-In account to the GeoCommunity site as
a step in this process. You will then have access to Digital Elevation
Models for downloads, along with the necessary TXT file for either the 10 or
30 Meter DEM file.

To properly process the downloads you will need one more Executable - see
attached.

There's a ReadMe in that Zip file to explain the process for you to use.

Sorry that you had to outlay cold, hard cash prior to this John. 😞

I've been using this site for a couple of years now.

Maybe I should have spoken up re. this site before this?

--
Don Reichle
"The only thing worse
than training your staff,
and having them leave is -
not training your staff,
and having them stay."
Courtesy Graphics Solution Providers
----------------------------------------------------------
!! Please discuss whatever we tell you with your SysMgr !!
!! They appreciate staying in the loop 🙂 !!

LDT/CD-2K4
AMD Athlon 64 X2 Dual-Core 3800+ 2.01GHz
XP-Pro 32bit SP2
2GB RAM
Dual WD800JD Hard Drives - 149GB Nvidia Stripe
Nvidia Quadro FX 1300 128MB
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"The only Constant is Change".


"John Mayo" wrote in message
news:5264785@discussion.autodesk.com...
So sorry.

www.topodepot.com

John



"John Mayo" wrote in message
news:5264679@discussion.autodesk.com...
I purchased a few quads of NJ from these guys very cheap. It came with
enough digital data (points & contours) to create decent surfaces of the
quads.

You will need some processing power & time since each quad was about 320,000
points.

John


"iampay02" wrote in message
news:5264666@discussion.autodesk.com...
What is the best way to create a surface from Contours on a Quad Map? Is
there a website that already has created DTM's?

[Anonymous]

Pre-development stormwater runoff studies come to mind as a reason Carl.

That's my "usual" purpose for them.

That and "very" preliminary horizontal/vertical design - for the reasons
you've noted.

--
Don Reichle
"The only thing worse
than training your staff,
and having them leave is -
not training your staff,
and having them stay."
Courtesy Graphics Solution Providers
----------------------------------------------------------
!! Please discuss whatever we tell you with your SysMgr !!
!! They appreciate staying in the loop 🙂 !!

LDT/CD-2K4
AMD Athlon 64 X2 Dual-Core 3800+ 2.01GHz
XP-Pro 32bit SP2
2GB RAM
Dual WD800JD Hard Drives - 149GB Nvidia Stripe
Nvidia Quadro FX 1300 128MB
Dual ViewSonic 19-inch VA902b monitors

"The only Constant is Change".


wrote in message news:5264822@discussion.autodesk.com...
iampay,

I am not sure why you are wanting to use quads for any project that requires
a surface. But be that as it may I would say that because of the in-accuracy
issues and the large contour interval that you have with quad maps you could
just digitize them into cad and then create the surface that way. You would
have just as good a surface a lot cheaper.

Carl