I am trying to create a TIN from NED data. Here is the process I have used so far. I downloaded a segment of the NED from the USGS seamless server and pulled it into ArcMap. Using spatial analyst, I was able to create a contour file utilizing 1m intervals and a z factor of 1. The contour is created without issues. When I bring the contour into ArcScene 10, It shows up as 2D. When I go into the Base Heights Tab, I'm choosing "USE a constant value or expression" and selecting "[Contour]" in the expression builder. When I press OK, the contour disappears from the scene. If I click zoom to layer all I see is a thin string of vertical dots in the center of my screen. What am I missing.
I also tried setting the base heights from the original NED surface.
The file is in GCS_North_American_1983, which is the same as the source NED. I am using the evaluation version of 3D and Spatial analyst. Version 10
Try projecting your data using a projected coordinate system. With the data in a Geographic Coordinate System, it is not being read very well. You may also be able to calculate a vertical exageration from the scene properties (View > Scene Properties) to get the data to view.
Try projecting your data using a projected coordinate system. With the data in a Geographic Coordinate System, it is not being read very well. You may also be able to calculate a vertical exageration from the scene properties (View > Scene Properties) to get the data to view.
