CAD tip # 9302:

Question CAD
% platform category

How to change elevation units in a map or GIS source?

You got GIS data in a SHP format or another data source - also in AutoCAD, where the geometry (e.g. 3D lines representing edges of a river) is stored in meters for X,Y and in millimeters for Z elevations (e.g. 254567). For further processing, you need to convert the Z-elevations of the lines to meters, i.e. scale them down by 1000.

You cannot use map queries to easily modify geometry in this way but you can elegantly solve this problem using import (the MAPIMPORT command) to AutoCAD entities. Select all imported entities, make a block of them - with a non-uniform scale in XYZ axes, and set scale 0.001 for the Z-axis. Finally explode the block and use the MAPEXPORT command to export the exploded geometry back to the 3D SHP format.

It is simple and quick.

MapCivil

* CAD

19.6.2013 4796×

Comments Tell a friend

Prices - CAD eShop:

Civil 3D

AutoCAD Map 3D

AEC Collection

applies to: AutoCAD Map 3D · Civil 3D ·

See also:
Tip 12988:	Where are Autodesk Infraworks building, road and terrain models loaded from?
Tip 9698:	Data formats supported in Autodesk InfraWorks 360.
Tip 8348:	How to load a SHP file and display its attribute data in AutoCAD?
Tip 7396:	How to convert block attributes to object data?
Tip 7070:	How to export 3D versions of SHP files?

Selected tip: What is the iPublisher program?

Back All CAD Tips

Problem inserting the current version of a component from Content Center. « | » What is the xref status "Unreferenced"?

Have we helped you? If you want to support the CAD Forum web service, consider buying one of our CAD applications, or our custom software development offerings, or donating via PayPal (see above). You may also add a link to your web - like this "fan" link:

CAD: OS: Categ:
Text:	FAQ glossary

Featuring:
Use Google Earth images in your AutoCAD projects with the Plex.Earth Tools

Please use these tips at your own risk.
Arkance Systems is not responsible for possible problems that may occur as a result of using any of these tips.

CZ \| EN \| DE
Login or
registration
	Visitors: 2763

	CAD Forum - tips, tricks, utilities, help, how-tos and FAQ for AutoCAD, LT, Inventor, Revit, Map, Civil 3D, Fusion 360, 3ds max and other Autodesk software (support by Arkance Systems)	Arkance Systems CZ s.r.o. (CAD Studio) - Autodesk Platinum Partner & Training Center & Consulting Services Partner	CONTACT: webmaster.cz@arkance-systems.com tel. +420 910 970 111
	Copyright © 2022 \| Advertise with us \| Online privacy