export a surface to dem/shp file

[Anonymous]

greetings

i exported a surface to dem, but when i open the dem file wiht ArcGIS, it is an empty file

i also tried to export it to shape file, but it always indicates "no entity to export", no matter what object types i selected (i had that export patch)

the surface i try to export is just a simple contour that made in the civil 3d

thx

[Anonymous]

here is the file

[AllenJessup]

I had no problem exporting the Surface to a DEM. I don't have ArcGIS but I opened a new drawing and connected to the DEM using FDO and the Surface came in fine. The DEM file created was 94MB. It too maybe 8 minutes ± to export.

Try again. Record you're steps and any errors you may receive. Post again with the info if you still have a problem.

Allen

[Murph_Map]

Do you have the required 3D Analyis add-in tools for your E$RI ArcGis  to use the DEM?

Second the export to shp only works on simple AutoCAD objects. You would need to export the surface (contours)  to autocad dwg format then use the Mapexport tool.

Work around is to export it as GeoTIFF type.

[Anonymous]

I am working with C3D to ArcGIS using the export to dem in C3D.  When I open the file in ArcGIS the elevations are far out of range (see attached image) and the surface is in the wrong geographic location.  Anyone have this same issue??

[Anonymous]

aolegario,

I also have the dem show up with a strange range. However, I have found that my surface is still correct, what matters is what I do with it once I'm in ArcGIS.

I don't have ArcGIS open right now so I can't tell you the exact commands, but try working with the surface display under Properties (Properties for that layer). If it's a large file, give it time to respond.

Also, if you have Spatial Analyst, you can perform analyses on the dem with Spatial Analyst, and those new layers will show up with the information derived from your dem layer.

Hope that helps. It worked for me.

Anna

[Anonymous]

thanks anna,

that helped.  The data transfers fine. just had to set the null elevation to the highest elev in the surface in the export window.  Then change the symbology settings in arcgis.

Anthony