topic Skyline tool surface options greyed out in 3D Mapping Questions https://community.esri.com/t5/3d-mapping-questions/skyline-tool-surface-options-greyed-out/m-p/789482#M192 <HTML><HEAD></HEAD><BODY><P>The surface options in the skyline tool are greyed out. The tool runs fine, and I get the option of refraction coefficient and earth curvature with the view shed tool, so it cant be a permissions issue. Has anyone else had this issue?</P></BODY></HTML> Wed, 30 Nov 2016 11:03:08 GMT AndrewFrost1 2016-11-30T11:03:08Z Skyline tool surface options greyed out https://community.esri.com/t5/3d-mapping-questions/skyline-tool-surface-options-greyed-out/m-p/789482#M192 <HTML><HEAD></HEAD><BODY><P>The surface options in the skyline tool are greyed out. The tool runs fine, and I get the option of refraction coefficient and earth curvature with the view shed tool, so it cant be a permissions issue. Has anyone else had this issue?</P></BODY></HTML> Wed, 30 Nov 2016 11:03:08 GMT https://community.esri.com/t5/3d-mapping-questions/skyline-tool-surface-options-greyed-out/m-p/789482#M192 AndrewFrost1 2016-11-30T11:03:08Z Re: Skyline tool surface options greyed out https://community.esri.com/t5/3d-mapping-questions/skyline-tool-surface-options-greyed-out/m-p/789483#M193 <HTML><HEAD></HEAD><BODY><P>From the <A href="http://desktop.arcgis.com/en/arcmap/latest/tools/3d-analyst-toolbox/how-skyline-works.htm">how skyline works</A> link, it appears that the available options depend on what you have in the data frame. Does this apply?</P><P><EM>When an Input Surface is provided, the Virtual Surface options are ignored. If no surface is provided and the Virtual Surface Radius is set to 0, a virtual surface whose elevation is slightly less than the lowest Z-value in the input features will be used, and the Virtual Surface Radius will be set to the average of all distance measurements from the observer point to each feature's envelope.</EM></P></BODY></HTML> Wed, 30 Nov 2016 12:41:56 GMT https://community.esri.com/t5/3d-mapping-questions/skyline-tool-surface-options-greyed-out/m-p/789483#M193 DanPatterson_Retired 2016-11-30T12:41:56Z Re: Skyline tool surface options greyed out https://community.esri.com/t5/3d-mapping-questions/skyline-tool-surface-options-greyed-out/m-p/789484#M194 <HTML><HEAD></HEAD><BODY><P>The input surface used makes no difference.&nbsp;</P></BODY></HTML> Wed, 30 Nov 2016 20:39:33 GMT https://community.esri.com/t5/3d-mapping-questions/skyline-tool-surface-options-greyed-out/m-p/789484#M194 AndrewFrost1 2016-11-30T20:39:33Z