3 Replies Latest reply on Apr 30, 2012 3:36 AM by geonetadmin

    3D Analyst/Surface Analyst/Area and Volume Statistics inconsistent why!?

    geonetadmin
      Original User: Scott_Atherton

      I am using ArcMap 9.3.1, 3D Analyst/Surface Analyst/Area and Volume Statistics to calculate some statistics on a TIN we have for a lake. The two options for calculating statistics are �??Calculate Statistics above plane�?� and �??Calculate Statistics below plane�?�. It says my Z max is 14.19 and my Z factor is 1. When I enter my Height of plane as 0 and calculate the statistics above the plane it gives me these results:   
      [ATTACH=CONFIG]13472[/ATTACH]
      And when I enter my Height of plane as 14.19 and hit calculate statistics below plane I get these results:
      [ATTACH=CONFIG]13473[/ATTACH]
      These numbers should be the same should they not be? am I missing something here? Any explanation would be greatly appreciated,
      Thanks in advance!