topic Spatial Analyst Only Showing Hotpsots Not Raster Overlays in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-only-showing-hotpsots-not-raster/m-p/376522#M5302 <HTML><HEAD></HEAD><BODY><SPAN>I have used the raster calculator, weighted overlay and cell statistics to develop a resource function using 4 grid raster layers.&nbsp; However, the only output I get is a few pixels where all these layers overlap not a summed map showing all the layers.&nbsp; Not sure what I am doing wrong.&nbsp; Cheers.</SPAN></BODY></HTML> Tue, 13 Sep 2011 14:38:57 GMT AaronHaines 2011-09-13T14:38:57Z Spatial Analyst Only Showing Hotpsots Not Raster Overlays https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-only-showing-hotpsots-not-raster/m-p/376522#M5302 <HTML><HEAD></HEAD><BODY><SPAN>I have used the raster calculator, weighted overlay and cell statistics to develop a resource function using 4 grid raster layers.&nbsp; However, the only output I get is a few pixels where all these layers overlap not a summed map showing all the layers.&nbsp; Not sure what I am doing wrong.&nbsp; Cheers.</SPAN></BODY></HTML> Tue, 13 Sep 2011 14:38:57 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-only-showing-hotpsots-not-raster/m-p/376522#M5302 AaronHaines 2011-09-13T14:38:57Z Re: Spatial Analyst Only Showing Hotpsots Not Raster Overlays https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-only-showing-hotpsots-not-raster/m-p/376523#M5303 <HTML><HEAD></HEAD><BODY><SPAN>You will have to modify the spatial extent and then fill in the areas that are Nodata with a value. You cannot add the null values to real values.&nbsp; There is </SPAN><A href="http://blogs.esri.com/Support/blogs/supportcenter/archive/2011/08/02/null-doesn-t-mean-zero.aspx">workflow</A><SPAN> to work with the rasters with different spatial extents.&nbsp; You will have to make sure all of the spatial extents match and there are no null values in the areas that you are trying to keep.</SPAN></BODY></HTML> Wed, 14 Sep 2011 11:26:51 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-only-showing-hotpsots-not-raster/m-p/376523#M5303 JeffreySwain 2011-09-14T11:26:51Z