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Point Cloud Lat. & Long.

Anonymous

Point Cloud Lat. & Long.

Anonymous
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Is there any way to get the Lat. & Long. from a point cloud that an Las File has been used to create a surface, so that I can line up the Bing image correctly. I have no defined object in the surface file only contours and of course the cloud points.

 

When I originally download all the different files I was hoping to find a shape/breakline file of sorts that would show the existing building, roads ...ect.

I think the info may be in a file that has an *.IMG extension and properties says that it is a "Disk Image File". How do I get this file to work?

 

2015 In Use

Dave Z.

 

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AllenJessup
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Use this file. I don't think the path should be any different for you. If it is do a search for the .bat file.

 

C:\Program Files (x86)\FWTools2.4.7\openev.bat or C:\Program Files (x86)\FWTools2.4.7\bin\openevw.bat

 

For more fun and giggles. Right click on the file and select Edit. This is how everything used to happen on a computer before windows. I put a link to that file on my desktop.

 

 

Allen Jessup
CAD Manager - Designer
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AllenJessup
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When using gdal_translate you may need to use the -of switch. See:http://www.gdal.org/gdal_translate.html

Allen Jessup
CAD Manager - Designer
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Pointdump
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Allen,

 

Thank you. I finally fumbled around, found and stuck Open EV on my desktop. I opened the "img" file with Open EV and saved it as a gTiff. Then I could bring it into C3D and create a 25,000,000-point surface.

 

I'll keep plugging away with Microdem. It seems to be GUI, but at this point I find it completely unfathomable.

 

QGIS is easy. It accepts ".img" files and will re-project them with GDAL-Warp into a useable GeoTiff for C3D.

 

Dave

Dave Stoll
Las Vegas, Nevada

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64GB DDR4 2400MHz ECC SoDIMM / 1TB SSD
NVIDIA Quadro P5000 16GB
Windows 10 Pro 64 / Civil 3D 2024

AllenJessup
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Pointdump wrote:

 

QGIS is easy. It accepts ".img" files and will re-project them with GDAL-Warp into a useable GeoTiff for C3D.


Dave,

 

Sounds like something I should check out. But our IT doesn't like a lot of programs they don't approve installed. They overlook some things I do because I'm the CAD Manager. But I don't like to push it too far.

 

Allen

Allen Jessup
CAD Manager - Designer
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