topic Z Factor won't stay at 1 (3D Analyst) in 3D Questions https://community.esri.com/t5/3d-questions/z-factor-won-t-stay-at-1-3d-analyst/m-p/411940#M2451 <HTML><HEAD></HEAD><BODY><P>Hi People,</P><P></P><P>I've recently been running the 3D Analyst tool Surface Volume and have noticed that even when I set my Z factor to 1 it always gets changed to 0.999998.&nbsp; While this is a very small difference, it does create a problem with the accuracy of the data I'm working with.</P><P></P><P>Currently, I'm running this tool as part of a rather large model, but I have noticed this problem while running the stand alone tool as well.&nbsp; If anyone has any explanation of this or a way to actually get it to stay at 1, please let me know.</P><P></P><P>Thanks,</P><P></P><P>John</P></BODY></HTML> Wed, 03 Sep 2014 16:39:37 GMT JohnDavies1 2014-09-03T16:39:37Z Z Factor won't stay at 1 (3D Analyst) https://community.esri.com/t5/3d-questions/z-factor-won-t-stay-at-1-3d-analyst/m-p/411940#M2451 <HTML><HEAD></HEAD><BODY><P>Hi People,</P><P></P><P>I've recently been running the 3D Analyst tool Surface Volume and have noticed that even when I set my Z factor to 1 it always gets changed to 0.999998.&nbsp; While this is a very small difference, it does create a problem with the accuracy of the data I'm working with.</P><P></P><P>Currently, I'm running this tool as part of a rather large model, but I have noticed this problem while running the stand alone tool as well.&nbsp; If anyone has any explanation of this or a way to actually get it to stay at 1, please let me know.</P><P></P><P>Thanks,</P><P></P><P>John</P></BODY></HTML> Wed, 03 Sep 2014 16:39:37 GMT https://community.esri.com/t5/3d-questions/z-factor-won-t-stay-at-1-3d-analyst/m-p/411940#M2451 JohnDavies1 2014-09-03T16:39:37Z Re: Z Factor won't stay at 1 (3D Analyst) https://community.esri.com/t5/3d-questions/z-factor-won-t-stay-at-1-3d-analyst/m-p/411941#M2452 <HTML><HEAD></HEAD><BODY><P>Small update on this issue...</P><P></P><P>I know that the Surface Volume tool, like most Spatial/3D Analyst tools uses floating point values which is the source of the z factor being converted to 0.999998 from true 1.&nbsp; But, I would still like to know if anyone out there has come up with some way to preserve these finite decimals.</P><P></P><P>Thanks </P></BODY></HTML> Thu, 04 Sep 2014 14:43:38 GMT https://community.esri.com/t5/3d-questions/z-factor-won-t-stay-at-1-3d-analyst/m-p/411941#M2452 JohnDavies1 2014-09-04T14:43:38Z