How to do set slope stakeout with CHCNAV i89 Pocket Visual RTK and LandStar 8 software？ 

Friend, is the teaching content of this video not detailed enough?

The 3D area is generally used to calculate the slope surface, which refers to the slope area and perimeter. For example, if you want to plant grass on a slope, you need to know the area where the grass is planted. Use this function to calculate the 3D slope area.

2D refers to the area of the slope projected onto the plane. Most scene area measurements only require 2D