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Ordnance Survey 3D terrain file import

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I am trying to import an 3D Ordnance Survey Landform Profile dxf into VW2008. It contains spotheights and contours with heights. The spotheights import fine but the contours import as extrudes and not as 3D polygons with z values which is what I need to model the terrain. Can anyone help? (The file imports fine into GIS packages). Thanks!

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Import your 3D loci (OS Data)

Select loci, then Landmark > Create Site Model.

Choose your contour intervals, Major & Minor.

You don't need to select 3D display settings, the model still enable you to create sections through the model.

Draw a polyline across the model, it must have 3 points and it will create a section.

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Sorry I forgot to say select the polyline, then

Landmark > Site Model Section.

The section will then be created

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