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atulbhobe
Posts: 17
Registered: ‎09-08-2012
Message 1 of 5 (251 Views)

Google Earth

251 Views, 4 Replies
12-25-2012 09:22 PM

I imported Google earth surface (at eye alt 600m) to civil 3d 2012 and created an alignment of length 181m.

When I exported same alignment to Google earth , it showed the length as 190m ( the difference increases with increase in length of alignment) 

And also the profile view of the alignment in the Civil D & Google earth varies.

 

Please anybody help in this issue.

 

*Expert Elite*
tcorey
Posts: 2,456
Registered: ‎12-18-2002
Message 2 of 5 (223 Views)

Re: Google Earth

12-26-2012 07:50 AM in reply to: atulbhobe

Don't expect Google Earth imports to have more than a very rough degree of accuracy.

Tim Corey, Owner
Delta Engineering Systems
Redding, CA
Autodesk Authorized Value-Added Reseller
Distinguished Mentor
michael.robertson
Posts: 589
Registered: ‎03-18-2008
Message 3 of 5 (211 Views)

Re: Google Earth

12-26-2012 10:02 AM in reply to: atulbhobe

Google Earth accuracy is very spotty, that's why aerial survey and photogrametry companies are still in business.

 

Google's offical stance says, "makes no claims as to the accuracy of the coordinates in Google Earth. These are provided for entertainment only and should not be used for any navigational or other purpose requiring any accuracy whatsoever".

Mike Robertson
FL. Dept. of Transportation
CADD Applications Developer
*Expert Elite*
Joe-Bouza
Posts: 4,753
Registered: ‎12-15-2008
Message 4 of 5 (173 Views)

Re: Google Earth

12-27-2012 10:37 AM in reply to: michael.robertson

michael.robertson wrote:

Google Earth accuracy is very spotty, that's why aerial survey and photogrametry companies are still in business.

 

Google's offical stance says, "makes no claims as to the accuracy of the coordinates in Google Earth. These are provided for entertainment only and should not be used for any navigational or other purpose requiring any accuracy whatsoever".


Makes you wonder why it got pulled from the platform, no?

Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People) Civil 3D 2012 & 2013
HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win7 OS
Distinguished Mentor
michael.robertson
Posts: 589
Registered: ‎03-18-2008
Message 5 of 5 (169 Views)

Re: Google Earth

12-27-2012 10:41 AM in reply to: Joe-Bouza

That was probably a small part, another large part I think is most people didn't understand the legal aspect. By license you could not base any commercial work of the platform (i.e. things like aerial photos for project presentations, etc) unless you licensed a commercial version of Google Earth.

Mike Robertson
FL. Dept. of Transportation
CADD Applications Developer

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