[GIS] How to properly Drape vectors over a DEM

Question

I have a DEM of my study area, and the streams in it.
Whenever I add both to ArcScene, and drape the vectors over the DEM, some of the vectors disappear from over the surface, and are visible under the surface. (see Image below).

Are there any specific settings to properly drape the vectors over the DEM?
Are there any other options or software that produce a better result (visually) when you have to drape vectors over a DEM?

Answer 1

I have made ​​the experience that the problem can not always be solved completely. But if you use layer's drawing priority, it gets better. Please try to use the layer's drawing priority:

In ArcScene you can change the drawing priority of each of the layers being displayed, so the more important layers will render on top of the less important layers. Using the 3D Effects toolbar you can change this property quickly. Steps:

• On the 3D Effects toolbar, click the Layer drop-down arrow and choose the layer you want to change the draw order for.
• Click the Change Depth Priority Change Depth Priority button and move the slider to a value.

In the numeric scale for depth priority, 1 is the highest and 10 is the lowest. If you want to decrease priority, choose a higher number.