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CAD tip CAD tip # 13296:

   
Question CAD 
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Q - question

How to correctly load a KML/KMZ file into Civil or Map 3D?

A - answer You can easily import a standard KML or KMZ file from Google Earth, from twiGIS or from other sources into your AutoCAD Map 3D or Civil 3D.

The presumption is that the coordinate system is set correctly in your map (DWG drawing). To load points or boundaries or polygons from KML, do the following:

  1. Use the command MapCSassign to set the correct coordinate system for projection ("P"). Use any standard system used in your local country or area. Here "JTSK" used in Czechia:

  2. Now you can use the command MapImport to read in your KML or KMZ file (choose the OGC format KML/KMZ). Imported points will be in the layer Placemark.

  3. You can tweak the point display style with the variables PDMODE / PDSIZE.

  4. Now you can enable the underlay map from the ribbon tab "Geoposition", to check the geographic position of the imported geometry. Do not use map positioning from this ribbon. A KML file containing addresses/positions of Arkance Systems offices in Czechia, Slovakia and Hungary was used in this example.

A frequent problem in this workflow is wrong assignment of geographic (not projected) coordinate system and arbitrary setting (by mouse clicking) of its reference point, origin.

MapCivil
100% *  CAD 
16.4.2022    452×  
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applies to: AutoCAD Map 3D · Civil 3D ·

See also:
Tip 9197:Export of 3D CAD models to Google Earth.
Tip 6064:Geo-marker: an unselectable cone-arrow in AutoCAD drawings
Tip 5593:Direct import of 3D terrain model from Google Earth to AutoCAD.
Tip 5042:Exporting Civil 3D projects to Google Earth.


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