topic Re: EXTRACT BY ATTRIBUTE in Data Management Questions https://community.esri.com/t5/data-management-questions/extract-by-attribute/m-p/189644#M10707 <HTML><HEAD></HEAD><BODY><P>no need to triple post... follow the thread here <A href="https://community.esri.com/thread/179059">EXTRACT BY ATTRIBUTE</A> </P></BODY></HTML> Mon, 27 Jun 2016 12:30:28 GMT DanPatterson_Retired 2016-06-27T12:30:28Z EXTRACT BY ATTRIBUTE https://community.esri.com/t5/data-management-questions/extract-by-attribute/m-p/189643#M10706 <HTML><HEAD></HEAD><BODY><P>Hi there,</P><P></P><P>I want to extract open water surface's using Xu's (2006) MNDWI.</P><P></P><P>Essentially, for Landsat 8, I have done the TOA correction, this was followed by the MNDWI calculation- using the Ratser Math tool. Everything worked fine, until I got to the point where I needed to extract the cells containing water (i.e. cells with the value &gt;0). To extract the water, I used the Extract by Attribute tool. The results turned out blank. I have no idea what I'm doing wrong.</P><P></P><P>Please help.</P><P>Thanks.</P><P>Faeeza</P></BODY></HTML> Mon, 27 Jun 2016 10:41:04 GMT https://community.esri.com/t5/data-management-questions/extract-by-attribute/m-p/189643#M10706 FaeezaFortune 2016-06-27T10:41:04Z Re: EXTRACT BY ATTRIBUTE https://community.esri.com/t5/data-management-questions/extract-by-attribute/m-p/189644#M10707 <HTML><HEAD></HEAD><BODY><P>no need to triple post... follow the thread here <A href="https://community.esri.com/thread/179059">EXTRACT BY ATTRIBUTE</A> </P></BODY></HTML> Mon, 27 Jun 2016 12:30:28 GMT https://community.esri.com/t5/data-management-questions/extract-by-attribute/m-p/189644#M10707 DanPatterson_Retired 2016-06-27T12:30:28Z