topic Adding raster datasets - raster calculator in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/adding-raster-datasets-raster-calculator/m-p/255914#M3641 <HTML><HEAD></HEAD><BODY><SPAN>Original User: fpoodat</SPAN><BR /><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I am trying to add some raster layers which are a bit different in the area they cover (extent). </SPAN><BR /><BR /><SPAN>Through this adding process, the pixels which are outside the extent of each input raster become "No data" and No data + a value will be No data. so the resultant raster covers the least common area of all the input data. </SPAN><BR /><BR /><SPAN>How can I get the ArcGIS to consider the "no data" value as "0" in this process?</SPAN><BR /><BR /><SPAN>Cheers,</SPAN><BR /><SPAN>Fatemeh</SPAN></BODY></HTML> Thu, 05 Jan 2012 00:09:15 GMT Anonymous User 2012-01-05T00:09:15Z Adding raster datasets - raster calculator https://community.esri.com/t5/arcgis-spatial-analyst-questions/adding-raster-datasets-raster-calculator/m-p/255914#M3641 <HTML><HEAD></HEAD><BODY><SPAN>Original User: fpoodat</SPAN><BR /><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I am trying to add some raster layers which are a bit different in the area they cover (extent). </SPAN><BR /><BR /><SPAN>Through this adding process, the pixels which are outside the extent of each input raster become "No data" and No data + a value will be No data. so the resultant raster covers the least common area of all the input data. </SPAN><BR /><BR /><SPAN>How can I get the ArcGIS to consider the "no data" value as "0" in this process?</SPAN><BR /><BR /><SPAN>Cheers,</SPAN><BR /><SPAN>Fatemeh</SPAN></BODY></HTML> Thu, 05 Jan 2012 00:09:15 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/adding-raster-datasets-raster-calculator/m-p/255914#M3641 Anonymous User 2012-01-05T00:09:15Z Re: Adding raster datasets - raster calculator https://community.esri.com/t5/arcgis-spatial-analyst-questions/adding-raster-datasets-raster-calculator/m-p/255915#M3642 <HTML><HEAD></HEAD><BODY><SPAN>Check out this blog post - </SPAN><SPAN style="font-size:2;"><A href="http://blogs.esri.com/Support/blogs/supportcenter/archive/2011/08/02/null-doesn-t-mean-zero.aspx">Null Doesn�??t Mean Zero?: <SPAN style="font-style:italic;">How to add different-sized rasters with NoData Values</SPAN></A></SPAN></BODY></HTML> Thu, 05 Jan 2012 14:06:25 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/adding-raster-datasets-raster-calculator/m-p/255915#M3642 TimothyHales 2012-01-05T14:06:25Z Re: Adding raster datasets - raster calculator https://community.esri.com/t5/arcgis-spatial-analyst-questions/adding-raster-datasets-raster-calculator/m-p/255916#M3643 <HTML><HEAD></HEAD><BODY><SPAN>Original User: fpoodat</SPAN><BR /><BR /><SPAN>Hi Timothy</SPAN><BR /><BR /><SPAN>It was worked out. According to that blog information, I defined a shape file with the suitable extent. Then through the adding process, I set the extent to the shapefile layer.</SPAN><BR /><BR /><SPAN>Now they are all the input rasters match and so I have got the result with the most extent.</SPAN><BR /><BR /><SPAN>Cheers,</SPAN><BR /><SPAN>Fatemeh</SPAN></BODY></HTML> Sun, 08 Jan 2012 22:51:07 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/adding-raster-datasets-raster-calculator/m-p/255916#M3643 Anonymous User 2012-01-08T22:51:07Z