LandXML supports AutoCAD Civil 3D drawing data for import and export.
LandXML Elements Supported for Import
Supported LandXML Elements for Export
All coordinate locations are always treated as Northing, Easting, Elevation (or Y,X,Z).
All station values are treated as the actual measured distance along the alignment or geometry. Station equations are always imported or exported (if they are defined) with alignment data. However, they are not applied to any geometric station locations in the data; they are used only for display and reporting purposes.
Point references to pointType derived locations <CgPoint pntRef="100"/> are supported. The supported references include: CgPoint, Start, Center, End, Monument, and CrossSectPnt elements. For more information, see Point Reference Export Options.
LandXML Elements Supported for Drawing Import
| LandXML Element Supported | Notes |
|---|---|
Units |
|
Application |
|
Author |
|
CoordinateSystem |
Uses Map Zone name / European Petroleum Survey Group (EPSG) name |
CgPoints |
Supports multiple elements. If <CgPoints> is named, a corresponding point group is created and COGO points are added. |
CgPoint |
Imports a COGO point and uses name and desc or code attributes. Number is auto-assigned if name is alpha-numeric, but name is maintained. |
Alignments |
|
CoordGeom |
Lines, curves, spirals, and irregular lines. |
AlignPI |
|
StaEq |
|
Superelevation |
|
DesignSpeeds |
|
Profiles |
Finished ground, design profiles created using imported lines (PVIs), circular vertical curves, parabolic, symmetric, and asymmetric vertical curves. |
ProfAlign |
All elements supported |
ProfSurf |
PVI, pointlist data for a sampled ground surface |
CrossSects |
|
CrossSectSurf |
As sample lines in sample line group associated with alignment |
DesignCrossSectSurf |
As subassembly |
Parcels |
Creates parcels from data |
CoordGeom |
All elements supported |
Monuments |
Creates COGO points in a monuments points group |
Surfaces |
|
SourceData |
|
Breaklines |
Imported as 3D polylines on layer "<surfacename>_Breaklines" |
Contours |
Imported as 3D polylines on layer "<surfacename>_Contours" |
DataPnts |
Imported as COGO point group named "<surfacename>_DataPoints" on layer "<surfacename>_DataPoints" |
Definition |
|
TIN |
Option to import faces, then either update triangulation or maintain the triangulation in the file. Supports face edge visibility and face neighbor optimization attributes. |
GRID |
|
Survey |
|
ReducedObservations |
Creates COGO points in an observations point group.
Important
Using the Import LandXML command from the File menu does not import survey data into the survey database. For more information, see Importing Survey XML Data. |
SurveyMonuments |
Creates COGO points in a monuments point group |
PlanFeatures |
|
CoordGeom |
Imported as 3D polylines to current layer |
PipeNetworks |
Each <Pipe Network> is imported as a AutoCAD Civil 3D pipe network |
Pipe |
Supports curved pipe |
Units.diameterUnit |
|
Structs |
|
Units.diameterUnit |
|
PipeFlow |
|
StructFlow |
Supported LandXML Elements for Drawing Export