There are two ways the DXF can be interpreted by Power Lines Pro:


  • Topographic Contour

This is for DXF files containing dense 3D information, such as a contour map with x,y, and z information in the polylines (where Z is height). 

The imported terrain heights can not be edited within Power Lines Pro.


  • Height Strips 

This is for DXF files of containing simple lines with height information that can be imported and then can be edited within Power Lines Pro (see Terrain Tool). These lines can be either in 3D space (where it contains x, y, z information) or it can be a 2D cross section along a route (where it contains x,y information only and z is ignored). 


Scale of the imported DXF needs to be 1m to 1 drawing unit.



File Import


When importing a DXF file, there are two options:


  • 3D Topographic or Plan (Z is height)Choose this option for all DXF files containing 3D information, i.e. polylines with x,y,z information
  • Profile (Y is height, Z is ignored) - Choose this option for all DXF files containing 2D information, i.e. polylines with x,y information, z will be ignored.




Terrain 


Specify the layer that contains terrain data in this section.  Power Lines Pro will try to automatically find the terrain information if no layer is specifiedFor complex DXF files, it is best to specified the layer the terrain data is contained in.


The following options will be available where 3D Topographic or Plan (Z is height) is chosen in the File Import section.

  • Topographic (Contours) 

For DXF containing complex, dense 3D lines. The imported terrain heights can not be edited within Power Lines Pro


  • Height Strips

For DXF containing simple 3D lines. The imported terrain heights can be edited within Power Lines Pro. See Terrain Tool on terrain editing.



Overlay


The DXF can be converted to an image for the purpose of being a ground overlay.


This is useful where clearances to existing proposed obstructions, land features property lines need to be met and is shown on a DXF file.



Poles


Depending on the way the DXF file is imported, poles within a DXF can be imported in the following ways:


  • 3D Topographic or Plan (Z is height)

            Poles can be imported via the pole block name or layer name. Only blocks can be imported.

  • Profile (Y is height, Z is ignored)

            Poles can be imported via layer name. Poles should be represented by individual vertical lines along the terrain cross section. 


Where an existing pole is at the same location as the imported pole, ticking the check box will replace the existing pole with the new pole.