Elevation missing from contour layers

[Anonymous]

I imported some point clouds and converted them into a surface. I wanted to create a 3d contour map of the surface. however, when I create the contour layer, it is just a flat layer and does not include any elevations. Is there a way to include elevation data in my contour layer ?

[Pointdump]

Nik,

Need more information please. Is your point cloud data a LAS file or DEM? How did you import your data and create your surface? (steps please) Can you post your drawing and/or point cloud data? Are you using Map 3D or Civil 3D? What is the end-result of the contours? (where are they going?)

Dave

[Anonymous]

Hi Dave, 

Thanks a lot for your reply!

My point cloud file is a .las file and I am using autocad map 3d . Here are my steps:

1) imported the pointcloud using the _POINTCLOUDMANAGER

2) all the .las files were indexed in this function

3) Once the point cloud was created, I right clicked on the pointcloud layer and clicked create surface 

4) the contours are only showing as a flat layer. I want the contour line to show up on different elevation. 

I have attached a jpeg photo for your reference. 

[Anonymous]

also the surface created is in ACMAPGISGRIDSURFACE format. 

[Pointdump]

Nik,

I'm completely failing in my attempts to use your steps. Point Cloud Manager is blank and useless in my Map 3D 2016. What version are you using?

I even tried bringing a LAS Point Cloud in with ReCap. I was able to do that, but it won't create a Map Feature Layer like you show in your Screen Shot.

So I'm not much help. Sorry. Maybe someone else will weigh in with something clever.

Dave