AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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*Ralph Sanchez
Message 1 of 13 (3,467 Views)

lidar point cloud (LAS) files to Civil 3D

3467 Views, 12 Replies
12-03-2008 01:22 PM
Does anyone know of a method to import lidar point cloud (.las) files into
Civil 3D surfaces? If C3D itself won't do it (and it doesn't seem to), is
there some middleman software that can convert the LAS files to NEZ (text)
points or contours which can then be used to create a C3D surface?

--
Ralph Sanchez
www.texupport.net
*neilw
Message 2 of 13 (3,466 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-03-2008 01:43 PM in reply to: *Ralph Sanchez
http://home.iitk.ac.in/~blohani/LASUtility/LASUtility.html

Do a web search for Convert LAS and you'll have more options.
C3D doesn't handle LAS directly.

"Ralph Sanchez" wrote in message
news:6083465@discussion.autodesk.com...
Does anyone know of a method to import lidar point cloud (.las) files into
Civil 3D surfaces? If C3D itself won't do it (and it doesn't seem to), is
there some middleman software that can convert the LAS files to NEZ (text)
points or contours which can then be used to create a C3D surface?

--
Ralph Sanchez
www.texupport.net
*Dave
Message 3 of 13 (3,466 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-03-2008 01:57 PM in reply to: *Ralph Sanchez
Hi Ralph,

We will be releasing a new version of TopoGX shortly that loads LAS
files. From there you can do a multitude of things.

- You could simply save it out to CSV or as you call it ENZ.

- Contour it and save them out...but thats not recommended as you will
loose surface accuracy.

- You could also save out the automatically generated surface as a set
of DXF 3D Faces or even a set of polyface meshes.

If its only one small file, you could try posting it here and Ill take a
look at converting it to CSV. Dont forget to zip it though.

Hope this helps,
Dave

Ralph Sanchez wrote:
> Does anyone know of a method to import lidar point cloud (.las) files into
> Civil 3D surfaces? If C3D itself won't do it (and it doesn't seem to), is
> there some middleman software that can convert the LAS files to NEZ (text)
> points or contours which can then be used to create a C3D surface?
>
*Terry W. Dotson
Message 4 of 13 (3,468 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-03-2008 02:50 PM in reply to: *Ralph Sanchez
Ralph Sanchez wrote:

> Does anyone know of a method to import lidar point cloud (.las) files
> into Civil 3D surfaces? If C3D itself won't do it (and it doesn't
> seem to), is there some middleman software that can convert the LAS
> files to NEZ (text) points or contours which can then be used to
> create a C3D surface?

The MapWorks Mass Points processor will let you select hundreds of
binary LAS files, then limit the area to a closed object and
intelligently throw out some unnecessary points. If a LAS tile falls
completely outside the boundary its ignored in a fraction of a second.

Why not get a 14day full working demo and get the job done on us. We're
hoping you'll get hooked.

Email me at dotson [at] dotsoft [dot] com if you have any questions.

Terry
--
Never start any job without the right tools!
AutoCAD Add-on Tools at http://www.dotsoft.com
*Ralph Sanchez
Message 5 of 13 (3,468 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-03-2008 03:25 PM in reply to: *Ralph Sanchez
Dave,

I appreciate the offer, but I need to convert about five LAS files and they
average about 200MB each.

--
Ralph Sanchez
www.texupport.net


"Dave" wrote in message
news:6083503@discussion.autodesk.com...
Hi Ralph,

We will be releasing a new version of TopoGX shortly that loads LAS
files. From there you can do a multitude of things.

- You could simply save it out to CSV or as you call it ENZ.

- Contour it and save them out...but thats not recommended as you will
loose surface accuracy.

- You could also save out the automatically generated surface as a set
of DXF 3D Faces or even a set of polyface meshes.

If its only one small file, you could try posting it here and Ill take a
look at converting it to CSV. Dont forget to zip it though.

Hope this helps,
Dave

Ralph Sanchez wrote:
> Does anyone know of a method to import lidar point cloud (.las) files into
> Civil 3D surfaces? If C3D itself won't do it (and it doesn't seem to), is
> there some middleman software that can convert the LAS files to NEZ (text)
> points or contours which can then be used to create a C3D surface?
>
*Ralph Sanchez
Message 6 of 13 (3,468 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-03-2008 03:26 PM in reply to: *Ralph Sanchez
Terry,

This sounds exactly like what I need. I sent you an email to request a
trial version.

--
Ralph Sanchez
www.texupport.net


"Terry W. Dotson" wrote in message
news:6083519@discussion.autodesk.com...
Ralph Sanchez wrote:

> Does anyone know of a method to import lidar point cloud (.las) files
> into Civil 3D surfaces? If C3D itself won't do it (and it doesn't
> seem to), is there some middleman software that can convert the LAS
> files to NEZ (text) points or contours which can then be used to
> create a C3D surface?

The MapWorks Mass Points processor will let you select hundreds of
binary LAS files, then limit the area to a closed object and
intelligently throw out some unnecessary points. If a LAS tile falls
completely outside the boundary its ignored in a fraction of a second.

Why not get a 14day full working demo and get the job done on us. We're
hoping you'll get hooked.

Email me at dotson [at] dotsoft [dot] com if you have any questions.

Terry
--
Never start any job without the right tools!
AutoCAD Add-on Tools at http://www.dotsoft.com
Distinguished Contributor
mike.barkasi
Posts: 344
Registered: ‎06-09-2007
Message 7 of 13 (3,468 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-03-2008 05:23 PM in reply to: *Ralph Sanchez
[http://www.youtube.com/watch?v=vSUFF5NmmxI]

I cant believe noone suggested PowerCivil. We import Lidar LAS data. The same tools can also be found in Inroads and GEOPAK.




Mike Barkasi
Bentley Civil
Professional Services
Distinguished Contributor
mike.barkasi
Posts: 344
Registered: ‎06-09-2007
Message 8 of 13 (3,468 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-03-2008 05:46 PM in reply to: *Ralph Sanchez
14 day free trial... cmon Terry even PowerCivil software has a 30 day grace period built in.
*Terry W. Dotson
Message 9 of 13 (3,468 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-04-2008 04:56 AM in reply to: *Ralph Sanchez
mike.barkasi@bentley.com wrote:

> 14 day free trial... cmon Terry even PowerCivil software has a 30 day
> grace period built in.

Strive for distortion don't you. PowerCivil (a competitive product) is
at least twenty times larger (because of *duplicate* functionality) and
probably 20x more *expensive* than our AUTOCAD ADD-ON. So you would
need to offer a 280 day trial to compare.

Terry
--
Never start any job without the right tools!
AutoCAD Add-on Tools at http://www.dotsoft.com
Distinguished Contributor
ACADuser
Posts: 1,205
Registered: ‎12-22-2003
Message 10 of 13 (3,468 Views)

Re: lidar point cloud (LAS) files to Civil 3D

12-04-2008 07:16 AM in reply to: *Ralph Sanchez
>
> > > >>

I cant believe noone suggested PowerCivil.

> > > > >


Could you imagine walking into a high performance car parts shop and asking for something that would boost the hp on your vehicle. The tech say's "There are many options....." and the guy behind you say's "I can't believe no one suggested a different vehicle".
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