topic Re: Cellular automata in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/cellular-automata/m-p/611173#M8907 <HTML><HEAD></HEAD><BODY><P>don't you mean to use "or" ( | ) the latter Con statement since your Focal statistics can't be&nbsp; 1 and 2 at the same time.&nbsp; I would break your workflow down into smaller steps to test</P></BODY></HTML> Mon, 10 Nov 2014 01:11:38 GMT DanPatterson_Retired 2014-11-10T01:11:38Z Cellular automata https://community.esri.com/t5/arcgis-spatial-analyst-questions/cellular-automata/m-p/611172#M8906 <HTML><HEAD></HEAD><BODY><P><BR />I have to simulate urban Development, and have urban raster where urban=1, other =0. I made a "Focal statistic" on that with Moore neighbourhood and SUM. My first rule in my raster calulator is: IF there are three or more developed cells in the Moore neighbourhood of a cell THEN the cell is developed. I made a expression: Con("Focal_statistic" &gt;=3,1,0) . That Works ok. Then I have a "roadraster", where road=1, others=0. My second rule is: IF there are one or two urban cells in the Moore neighbourhood AND there is a road running through this cell THEN the cell is developed. I wrote in my raster calculator: <SPAN style="color: #3d3d3d;">Con("Focal_statistic" &gt;=3,1,0) &amp; Con(("Focal _statistic" ==1 &amp; "Focal statistic"==2) &amp; "roadraster",1) But that dosn`t Work?</SPAN></P><P><SPAN style="color: #3d3d3d;">Hi from MJ</SPAN></P></BODY></HTML> Thu, 16 Oct 2014 14:59:51 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/cellular-automata/m-p/611172#M8906 MaybrithJohannsen 2014-10-16T14:59:51Z Re: Cellular automata https://community.esri.com/t5/arcgis-spatial-analyst-questions/cellular-automata/m-p/611173#M8907 <HTML><HEAD></HEAD><BODY><P>don't you mean to use "or" ( | ) the latter Con statement since your Focal statistics can't be&nbsp; 1 and 2 at the same time.&nbsp; I would break your workflow down into smaller steps to test</P></BODY></HTML> Mon, 10 Nov 2014 01:11:38 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/cellular-automata/m-p/611173#M8907 DanPatterson_Retired 2014-11-10T01:11:38Z