topic Visibility - Negative values? in 3D Mapping Questions https://community.esri.com/t5/3d-mapping-questions/visibility-negative-values/m-p/874286#M941 <HTML><HEAD></HEAD><BODY><P>I am expecting the output of my visibility analysis to be 0 or a positive number, but I am also getting negative values.&nbsp; Do negative values represent not visible?</P></BODY></HTML> Wed, 17 Sep 2014 20:24:43 GMT KyleGallagher 2014-09-17T20:24:43Z Visibility - Negative values? https://community.esri.com/t5/3d-mapping-questions/visibility-negative-values/m-p/874286#M941 <HTML><HEAD></HEAD><BODY><P>I am expecting the output of my visibility analysis to be 0 or a positive number, but I am also getting negative values.&nbsp; Do negative values represent not visible?</P></BODY></HTML> Wed, 17 Sep 2014 20:24:43 GMT https://community.esri.com/t5/3d-mapping-questions/visibility-negative-values/m-p/874286#M941 KyleGallagher 2014-09-17T20:24:43Z Re: Visibility - Negative values? https://community.esri.com/t5/3d-mapping-questions/visibility-negative-values/m-p/874287#M942 <HTML><HEAD></HEAD><BODY><P>In <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#//009z000000zr000000">visibility</A> did you create the AGL raster? I don't see any reference to negative values, so it is really possible or something else, at which point I would check to see what type of file you are using (Grids best), that the input data are projected and the X,Y and Z have the same units (ie meters) and a variety of other things</P></BODY></HTML> Wed, 17 Sep 2014 22:24:15 GMT https://community.esri.com/t5/3d-mapping-questions/visibility-negative-values/m-p/874287#M942 DanPatterson_Retired 2014-09-17T22:24:15Z