topic Re: Comapre two rasters with different extents in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/comapre-two-rasters-with-different-extents/m-p/104936#M1477 <HTML><HEAD></HEAD><BODY><P>extents are rectangular and will not follow your edge differences.</P><P>you will have some success using Con and IsNull to produce a mask yielding the cells that have values in both rasters.&nbsp; Also make sure that you have a valid nodata value specified for the rasters</P><P><A class="link-titled" href="https://pro.arcgis.com/en/pro-app/tool-reference/image-analyst/conditional-evaluation-with-con.htm" title="https://pro.arcgis.com/en/pro-app/tool-reference/image-analyst/conditional-evaluation-with-con.htm">Conditional evaluation with Con—Help | ArcGIS Desktop</A>&nbsp;</P></BODY></HTML> Fri, 27 Sep 2019 10:03:37 GMT DanPatterson_Retired 2019-09-27T10:03:37Z Comapre two rasters with different extents https://community.esri.com/t5/arcgis-spatial-analyst-questions/comapre-two-rasters-with-different-extents/m-p/104935#M1476 <HTML><HEAD></HEAD><BODY><P>I’m trying to compare vales of two rasters, however the rasters extent are not the same (but one raster is not smaller than the other, the extent differ in different places - see picture attached). I’m struggling to do this with the raster calculator as when I minus one from the other I do not get a difference form the full extent as some of the values has been set to NoData, so only get the difference where they overlap. Is there any way I can compare these rasters not only where they overlap but where they don't?<IMG alt="Screenshot of the rasters I" m="" trying="" to="" compare="" /></P></BODY></HTML> Fri, 27 Sep 2019 07:01:52 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/comapre-two-rasters-with-different-extents/m-p/104935#M1476 LoisEvans 2019-09-27T07:01:52Z Re: Comapre two rasters with different extents https://community.esri.com/t5/arcgis-spatial-analyst-questions/comapre-two-rasters-with-different-extents/m-p/104936#M1477 <HTML><HEAD></HEAD><BODY><P>extents are rectangular and will not follow your edge differences.</P><P>you will have some success using Con and IsNull to produce a mask yielding the cells that have values in both rasters.&nbsp; Also make sure that you have a valid nodata value specified for the rasters</P><P><A class="link-titled" href="https://pro.arcgis.com/en/pro-app/tool-reference/image-analyst/conditional-evaluation-with-con.htm" title="https://pro.arcgis.com/en/pro-app/tool-reference/image-analyst/conditional-evaluation-with-con.htm">Conditional evaluation with Con—Help | ArcGIS Desktop</A>&nbsp;</P></BODY></HTML> Fri, 27 Sep 2019 10:03:37 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/comapre-two-rasters-with-different-extents/m-p/104936#M1477 DanPatterson_Retired 2019-09-27T10:03:37Z