AutoCAD Civil 3D

[#1]

Hi there,

Is it possible to export a DTM (TIN surface) to ESRI's ASCII grid format (for ArcGIS)?

I've attached an example file.

Failing that, is it possible to export to a simple XYZ point file?

Cheers,

Paul.

[#2]

I'm not sure if this is possible - hopefully someone else will come in and prove me wrong...!!!

It is easy anough to produce a simple XYZ of the triangle points although the surface may not be exactly the same as the triangles are not exported.

Display the surface with points turned on and then Extract Objects > Points from the surface, then perform a data extraction or _MAPEXPORT on the Points direct to shp file (I've attached the dbf for one I just did)

[#3]

If you already added your TIN to a surface definition, then create a Dem file with _SURFACEEXPORTTODEM, finally you convert the resulting .TIF (or .DEM) to .ASC format, by means of the opensource Microdem.