topic Re: Raster math issue in Data Management Questions https://community.esri.com/t5/data-management-questions/raster-math-issue/m-p/274715#M15825 <HTML><HEAD></HEAD><BODY><SPAN>Thanks, Eric...duh, that makes perfect sense.</SPAN></BODY></HTML> Wed, 19 Oct 2011 14:51:28 GMT ChristopherStrother 2011-10-19T14:51:28Z Raster math issue https://community.esri.com/t5/data-management-questions/raster-math-issue/m-p/274713#M15823 <HTML><HEAD></HEAD><BODY><SPAN>I have created two rasters with the identical cell size, rows, columns. When subtracting B from A, I am getting a negative value even though the Min value of A is larger than that of B. Any ideas?</SPAN></BODY></HTML> Mon, 03 Oct 2011 16:39:13 GMT https://community.esri.com/t5/data-management-questions/raster-math-issue/m-p/274713#M15823 ChristopherStrother 2011-10-03T16:39:13Z Re: Raster math issue https://community.esri.com/t5/data-management-questions/raster-math-issue/m-p/274714#M15824 <HTML><HEAD></HEAD><BODY><SPAN>Example (Raster A - Raster B)</SPAN><BR /><BR /><SPAN>Raster A </SPAN><BR /><SPAN>Min 5</SPAN><BR /><SPAN>Max 10</SPAN><BR /><BR /><SPAN>Raster B</SPAN><BR /><SPAN>Min 1</SPAN><BR /><SPAN>Max 10</SPAN><BR /><SPAN> </SPAN><BR /><SPAN>The Min value of A is larger than that of B, per your criteria.</SPAN><BR /><BR /><SPAN>Lets say at a given pixel location, Raster A is value of 6, and Raster B is value of 10. This would result in a value of -4.&nbsp; </SPAN><BR /><BR /><SPAN>It doesn't matter what the minimum values are.&nbsp; It matters what the values are at the pixel locations being subtracted.</SPAN><BR /><BR /><SPAN>Regards,</SPAN><BR /><SPAN>Eric</SPAN></BODY></HTML> Tue, 04 Oct 2011 15:32:36 GMT https://community.esri.com/t5/data-management-questions/raster-math-issue/m-p/274714#M15824 EricRice 2011-10-04T15:32:36Z Re: Raster math issue https://community.esri.com/t5/data-management-questions/raster-math-issue/m-p/274715#M15825 <HTML><HEAD></HEAD><BODY><SPAN>Thanks, Eric...duh, that makes perfect sense.</SPAN></BODY></HTML> Wed, 19 Oct 2011 14:51:28 GMT https://community.esri.com/t5/data-management-questions/raster-math-issue/m-p/274715#M15825 ChristopherStrother 2011-10-19T14:51:28Z