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*Expert Elite*
BrianHailey
Posts: 2,749
Registered: ‎04-27-2005
Message 11 of 48 (381 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-11-2013 06:00 PM in reply to: mikeshick

Double click on it. If it opens and you see an image, then it's an image. If it doesn't show you an image, it's probably a DEM.

*Expert Elite*
Neilw
Posts: 2,200
Registered: ‎09-04-2006
Message 12 of 48 (367 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-12-2013 04:37 AM in reply to: mikeshick

A 456 MB file is going to tax the resources of C3D. You'll need a 64 bit OS and probably at least 8 MB of RAM to process it. Allow maybe 30 minutes to process. Watch your resource monitor to ensure it is processing. If not kill it. I don't have any solutions after that. If you only need a portion of the area covered by the DTM, use a data clip boundary to reduce the area of the dataset to reduce processing.

 

You are correct about applying the CS parameters. C3D will tranform the data to your project CS if the parameters are applied. However it will not transform the vertical units per my previous comments.

 

It is my understanding that Geotiff's can be converted to DTM's but as far as I know using an FDO connection cannot produce a surface model directly. It will require additional steps (i.e Geotiff to SDF to contours to DTM) and I don't know if it is any more efficient resource wise. I think you can save those steps if you use the more direct approach.

 

I haven't tried Brians suggestion of using Infrastructure Modeler. It's a novel approach but it requires learning another product. Personally I'd rather not bring another application into the mix. Users (including myself) have enough on their plate learing C3D, Autocad and Map. My first impression of Infrastructure Modeler leaves me uninspired to invest time to learn it.  http://forums.autodesk.com/t5/AutoCAD-Civil-3D/Distributing-Infrastructure-and-Civil-3D-Models-in-3D...

 

If IM is the only capable solution (aside from purchasing another product) then I guess we are stuck with having to utilize it.

Neil Wilson (a.k.a. neilw)
Infrastructure Suite/C3D 2013, LDT 2004, Power Civil v8i SS1
WIN 7 64 PRO
HP Pavillion h8xt, i7 2600, 12 GB
RADEON 6450, 1 GB
http://www.sec-landmgt.com
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mikeshick
Posts: 454
Registered: ‎07-06-2001
Message 13 of 48 (363 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-12-2013 04:42 AM in reply to: Neilw

Yes...It does tax resources.  I do have 16 GB of memory though...and thought it completed processing in some short order, I still was not able to view or build a surface from that adf file, and I'm not clear why.  I tried multiple times, no avail.

 

What is FDO connection?

 

Yes...I agree.  With my structural engineering and architectural work, I'm not too excited about adding software either, if I don't have to.  I've never gotten into Map very much.

Mike Shick
www.medesigns.us
*Expert Elite*
Neilw
Posts: 2,200
Registered: ‎09-04-2006
Message 14 of 48 (345 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-12-2013 08:53 AM in reply to: mikeshick

FDO=Feature Data Object. It is a Map function for displaying common GIS data formats. Look in the Map help system. I don't think it will help you in this workflow, assuming you are wanting a C3D surface object from the data.

Neil Wilson (a.k.a. neilw)
Infrastructure Suite/C3D 2013, LDT 2004, Power Civil v8i SS1
WIN 7 64 PRO
HP Pavillion h8xt, i7 2600, 12 GB
RADEON 6450, 1 GB
http://www.sec-landmgt.com
*Expert Elite*
antoniovinci
Posts: 1,575
Registered: ‎06-03-2011
Message 15 of 48 (336 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-12-2013 11:35 AM in reply to: mikeshick

If you have no copyright troubles, feel free to give us the link to that monster 456 MB Dem: we could try to decimate it by means of opensource Gis...

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mikeshick
Posts: 454
Registered: ‎07-06-2001
Message 16 of 48 (314 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-13-2013 08:45 AM in reply to: antoniovinci
Sure...This files is free from USGS. Click HERE.
Mike Shick
www.medesigns.us
*Expert Elite*
antoniovinci
Posts: 1,575
Registered: ‎06-03-2011
Message 17 of 48 (309 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-13-2013 09:52 AM in reply to: mikeshick

mikeshick wrote:
Click HERE.

"Here" where, sir?

Don't forget to add the clipping range, i.e. the lat/long coordinates of left lowest corner and right highest one.

Distinguished Contributor
mikeshick
Posts: 454
Registered: ‎07-06-2001
Message 18 of 48 (303 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-13-2013 10:19 AM in reply to: antoniovinci

Hmmm..not sure what happened to the hyperlink.  Try again HERE.

Mike Shick
www.medesigns.us
*Expert Elite*
antoniovinci
Posts: 1,575
Registered: ‎06-03-2011
Message 19 of 48 (275 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-16-2013 02:12 PM in reply to: mikeshick


Sorry for the late, sir, I took a couple of days off.

Your Dem has a 1/3" resolution, so I decimated it three times.

Here's my 1 arc-second release, try it and tell me what about:
http://ge.tt/4dLE0fY/v/0?c

*Expert Elite*
BrianHailey
Posts: 2,749
Registered: ‎04-27-2005
Message 20 of 48 (268 Views)

Re: Archgrid, Geotiff, DEM Alternatives to Google Earth Import in Civil 3D

02-16-2013 05:09 PM in reply to: mikeshick

Mike,

 

What coordinate system are you trying to bring it into?

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