AutoCAD Map 3D General Discussion

AutoCAD Map 3D General Discussion

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Member
avoc42
Posts: 5
Registered: ‎12-01-2011
Message 1 of 6 (309 Views)
Accepted Solution

bringing in xyz points

309 Views, 5 Replies
06-18-2012 11:35 AM

Hi There,

I'm using mapimport to bring in xyz points and they have come in ok, except that they are flipped horizontally.

(they come in as a block)

Any ideas on how to flip them back?

Perhaps there is a command that rotates objects all at one time *not* based on one central point..

 

Any help would be greatly appreciated.

Thanks!

You might just need to change the sign on the X values.  If you are in the western hemisphere, sometimes a GPS will record the X value as positve, and indicate otherwise that is it W, but a LL or similar CS in Map will expect -42 for example, not 42 and a W in a separate column.

Valued Mentor
parkr4st
Posts: 461
Registered: ‎03-24-2004
Message 2 of 6 (308 Views)

Re: bringing in xyz points

06-18-2012 12:12 PM in reply to: avoc42

does flipped mean 180 degrees on y axis? as in your x values are negative instead of positive or vice versa?

Member
avoc42
Posts: 5
Registered: ‎12-01-2011
Message 3 of 6 (293 Views)

Re: bringing in xyz points

06-18-2012 06:20 PM in reply to: avoc42
They do appear to be simply flipped 180 deg. The points come directly from the gps unit, so perhaps the data needs to be changed in some way before importing....
I have not yet tried inserting a negative sign in the CSV file. I'll try it in the morning.
*Expert Elite*
Alfred.NESWADBA
Posts: 9,401
Registered: ‎06-29-2007
Message 4 of 6 (267 Views)

Re: bringing in xyz points

06-21-2012 02:35 PM in reply to: avoc42

Hi,

 

then I guess that your columns for X and Y have to be changed.

 

- alfred -

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Alfred NESWADBA
Ingenieur Studio HOLLAUS ... www.hollaus.at
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NateMoore
Posts: 100
Registered: ‎04-25-2008
Message 5 of 6 (259 Views)

Re: bringing in xyz points

06-22-2012 06:23 AM in reply to: avoc42

You might just need to change the sign on the X values.  If you are in the western hemisphere, sometimes a GPS will record the X value as positve, and indicate otherwise that is it W, but a LL or similar CS in Map will expect -42 for example, not 42 and a W in a separate column.



Nate Moore, GISP
Geospatial Premium Support Specialist
Global Services
Autodesk, Sarl
Member
avoc42
Posts: 5
Registered: ‎12-01-2011
Message 6 of 6 (253 Views)

Re: bringing in xyz points

06-22-2012 08:45 AM in reply to: avoc42
Thanks! I tried a bunch of different variations on putting a negative sign in front of the x and the y... I'm working in UTM83 zone 12.
I did get it working ok, now just need to figure out why only portions of the data are completely off. That's a question for a different forum though.
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