topic Creating a polygon from a reclassified raster in Data Management Questions https://community.esri.com/t5/data-management-questions/creating-a-polygon-from-a-reclassified-raster/m-p/60031#M3418 <HTML><HEAD></HEAD><BODY><SPAN>Original User: eddie416</SPAN><BR /><BR /><SPAN>I'm having some issues coming up with a plan on how to solve my problem. Basically, I want to reclassify a raster with values 0-255 (see capture1). I want all areas with imagery to be reclassified to a value of 1 and all black areas to be reclassified to a value of 0. The issue is, the black areas don't contain all 0 values.</SPAN><BR /><BR /><SPAN>This is an issue because the end goal is to create a polygon that only encompasses the area that contains imagery. When I reclassify, it looks like capture2 (see attached). I can't pick a range of values to select the black area because then I will be selecting pixels in the imagery as well.</SPAN><BR /><BR /><SPAN>Can anyone come up with a solution to this? Could I use some sort of line detection process to do this or is there another way?</SPAN><BR /><BR /><SPAN>Appreciate any help!</SPAN></BODY></HTML> Tue, 05 Nov 2013 16:54:08 GMT Anonymous User 2013-11-05T16:54:08Z Creating a polygon from a reclassified raster https://community.esri.com/t5/data-management-questions/creating-a-polygon-from-a-reclassified-raster/m-p/60031#M3418 <HTML><HEAD></HEAD><BODY><SPAN>Original User: eddie416</SPAN><BR /><BR /><SPAN>I'm having some issues coming up with a plan on how to solve my problem. Basically, I want to reclassify a raster with values 0-255 (see capture1). I want all areas with imagery to be reclassified to a value of 1 and all black areas to be reclassified to a value of 0. The issue is, the black areas don't contain all 0 values.</SPAN><BR /><BR /><SPAN>This is an issue because the end goal is to create a polygon that only encompasses the area that contains imagery. When I reclassify, it looks like capture2 (see attached). I can't pick a range of values to select the black area because then I will be selecting pixels in the imagery as well.</SPAN><BR /><BR /><SPAN>Can anyone come up with a solution to this? Could I use some sort of line detection process to do this or is there another way?</SPAN><BR /><BR /><SPAN>Appreciate any help!</SPAN></BODY></HTML> Tue, 05 Nov 2013 16:54:08 GMT https://community.esri.com/t5/data-management-questions/creating-a-polygon-from-a-reclassified-raster/m-p/60031#M3418 Anonymous User 2013-11-05T16:54:08Z