topic Merging 4 raster layers into 1 + avoiding overlaps in Data Management Questions https://community.esri.com/t5/data-management-questions/merging-4-raster-layers-into-1-avoiding-overlaps/m-p/731932#M41431 <HTML><HEAD></HEAD><BODY><SPAN>Original User: masa8187</SPAN><BR /><BR /><SPAN>I have four raster layers that all represent different soil types. Now I want to merge them into one single layer with four different classes. I have been told that I can use Raster Caculator for this - but which expression should I use?</SPAN><BR /><BR /><SPAN>I also need to find a way to eliminate any overlapping where more than one class is identifiable in the same area. Is there a way to "rank" the classes? An area covered by class 1 and 2 should be classified as 1, areas covered by class 2, 3 and 4 should be classified as 2 and so on.</SPAN><BR /><BR /><SPAN>In the end I want one shape-file with four different non-overlapping classes.</SPAN></BODY></HTML> Sun, 24 Nov 2013 14:37:04 GMT Anonymous User 2013-11-24T14:37:04Z Merging 4 raster layers into 1 + avoiding overlaps https://community.esri.com/t5/data-management-questions/merging-4-raster-layers-into-1-avoiding-overlaps/m-p/731932#M41431 <HTML><HEAD></HEAD><BODY><SPAN>Original User: masa8187</SPAN><BR /><BR /><SPAN>I have four raster layers that all represent different soil types. Now I want to merge them into one single layer with four different classes. I have been told that I can use Raster Caculator for this - but which expression should I use?</SPAN><BR /><BR /><SPAN>I also need to find a way to eliminate any overlapping where more than one class is identifiable in the same area. Is there a way to "rank" the classes? An area covered by class 1 and 2 should be classified as 1, areas covered by class 2, 3 and 4 should be classified as 2 and so on.</SPAN><BR /><BR /><SPAN>In the end I want one shape-file with four different non-overlapping classes.</SPAN></BODY></HTML> Sun, 24 Nov 2013 14:37:04 GMT https://community.esri.com/t5/data-management-questions/merging-4-raster-layers-into-1-avoiding-overlaps/m-p/731932#M41431 Anonymous User 2013-11-24T14:37:04Z Re: Merging 4 raster layers into 1 + avoiding overlaps https://community.esri.com/t5/data-management-questions/merging-4-raster-layers-into-1-avoiding-overlaps/m-p/731933#M41432 <HTML><HEAD></HEAD><BODY><SPAN>I believe this can be accomplished with "CON" statements in the raster calculator. I would nest the statements, working from highest ranking to lowest. So, in pseudo code: Condition1 ( raster1 not null, use raster1, else(condition2( raster2 not null, use raster2, else(condition3( raster3 not null ......</SPAN><BR /><SPAN>If you need more explicit instruction, send a reply to the thread, and I or someone else can elaborate.</SPAN><BR /><SPAN>Best Regards,</SPAN><BR /><SPAN>Jim</SPAN></BODY></HTML> Tue, 26 Nov 2013 20:31:08 GMT https://community.esri.com/t5/data-management-questions/merging-4-raster-layers-into-1-avoiding-overlaps/m-p/731933#M41432 JimCousins 2013-11-26T20:31:08Z