topic Re: Acreage calculation is off in Data Management Questions https://community.esri.com/t5/data-management-questions/acreage-calculation-is-off/m-p/170163#M9621 <HTML><HEAD></HEAD><BODY><SPAN>Are the polygon and the raster in the same projection?&nbsp; How is acreage being calculated in both?</SPAN></BODY></HTML> Wed, 25 Jun 2014 04:02:53 GMT DanPatterson_Retired 2014-06-25T04:02:53Z Acreage calculation is off https://community.esri.com/t5/data-management-questions/acreage-calculation-is-off/m-p/170162#M9620 <HTML><HEAD></HEAD><BODY><SPAN>I am trying to calculate the acreage in a polygon and the numbers I keep getting are 1/3 to 1/2 higher than they should be when calcalculating the area of a known polygon.&nbsp; Why do I keep getting higher readings?&nbsp; I am using OSIP tile data provided by the State of Ohio.</SPAN></BODY></HTML> Tue, 24 Jun 2014 22:34:30 GMT https://community.esri.com/t5/data-management-questions/acreage-calculation-is-off/m-p/170162#M9620 StephenMazak 2014-06-24T22:34:30Z Re: Acreage calculation is off https://community.esri.com/t5/data-management-questions/acreage-calculation-is-off/m-p/170163#M9621 <HTML><HEAD></HEAD><BODY><SPAN>Are the polygon and the raster in the same projection?&nbsp; How is acreage being calculated in both?</SPAN></BODY></HTML> Wed, 25 Jun 2014 04:02:53 GMT https://community.esri.com/t5/data-management-questions/acreage-calculation-is-off/m-p/170163#M9621 DanPatterson_Retired 2014-06-25T04:02:53Z Re: Acreage calculation is off https://community.esri.com/t5/data-management-questions/acreage-calculation-is-off/m-p/170164#M9622 <HTML><HEAD></HEAD><BODY><SPAN>Thanks Dan.&nbsp; You were right.&nbsp; The projection was not the same.&nbsp; Once I was able to get all the layers on the same projection, the </SPAN><BR /><SPAN>acreage calculation was spot on.&nbsp; Thanks for the help, Dan, I really appreciate it.</SPAN></BODY></HTML> Wed, 25 Jun 2014 23:54:13 GMT https://community.esri.com/t5/data-management-questions/acreage-calculation-is-off/m-p/170164#M9622 SteveMazak 2014-06-25T23:54:13Z