topic Spatial Analyst expression for NoData when Adding two Layers together in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-expression-for-nodata-when-adding/m-p/385323#M5420 <HTML><HEAD></HEAD><BODY><SPAN>Does anyone know how to write the Map Calc expression (in SA v10) when you have a layer with NoData and are adding it to another layer (e.g. DEM) (without reclassifying the layer with the NoData first)?</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><A class="jive-link-email-small" href="mailto:jbolton@frwa.org">jbolton@frwa.org</A></BODY></HTML> Fri, 13 Aug 2010 11:17:41 GMT JeffBolton 2010-08-13T11:17:41Z Spatial Analyst expression for NoData when Adding two Layers together https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-expression-for-nodata-when-adding/m-p/385323#M5420 <HTML><HEAD></HEAD><BODY><SPAN>Does anyone know how to write the Map Calc expression (in SA v10) when you have a layer with NoData and are adding it to another layer (e.g. DEM) (without reclassifying the layer with the NoData first)?</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><A class="jive-link-email-small" href="mailto:jbolton@frwa.org">jbolton@frwa.org</A></BODY></HTML> Fri, 13 Aug 2010 11:17:41 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-expression-for-nodata-when-adding/m-p/385323#M5420 JeffBolton 2010-08-13T11:17:41Z Re: Spatial Analyst expression for NoData when Adding two Layers together https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-expression-for-nodata-when-adding/m-p/385324#M5421 <HTML><HEAD></HEAD><BODY><SPAN>you can substitute your case for the one shown here</SPAN><BR /><A href="http://forums.arcgis.com/threads/3062-multiply-two-rasters-but-ignore-no-data-values-from-first-raster">http://forums.arcgis.com/threads/3062-multiply-two-rasters-but-ignore-no-data-values-from-first-raster</A></BODY></HTML> Sun, 15 Aug 2010 11:53:41 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/spatial-analyst-expression-for-nodata-when-adding/m-p/385324#M5421 DanPatterson_Retired 2010-08-15T11:53:41Z