**1. I added pointcloud ****and a kml polyline **data to the Cesium, if i set polyline clamping to the ground, you can see the result as the follow image
but if i change polyline clamping to groung to false, the result as the floow image
2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.
3. Context. Why do you need to do this? We might know a better way to accomplish your goal.
I want to diaplay powerline pointcloud data with a vector line
4. The Cesium version you’re using, your operating system and browser.