topic Census data conversion to raster and aggregation.... in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/census-data-conversion-to-raster-and-aggregation/m-p/39955#M487 <HTML><HEAD></HEAD><BODY><SPAN>Hello everyone. If anyone can help to solve the problem I will highly appreciate it!!!</SPAN><BR /><BR /><SPAN>I am trying to convert Census tract data for certain states (polygon) to raster and then aggregate cell size to 0.05.</SPAN><BR /><BR /><SPAN>But I have huge problem. First of all, when I am converting polygons to raster with cell size of 0.0001 I am loosing about 200,000 people. But the main problem is when I need to aggregate 0.0001 cells to 0.05 with the "SUM" method. The population adds up to VERY HUGE NUMBER.&nbsp; </SPAN><BR /><BR /><SPAN>I think it happens since the polygons originally have different size, and when Aggregate tool SUMs the values it add values that should just transfer one value for that polygon. I don't know any other methods </SPAN><BR /><BR /><SPAN>If anyone knows how to solve this problem please help.</SPAN><BR /><SPAN>Thank you in advance.</SPAN></BODY></HTML> Sat, 25 May 2013 22:59:47 GMT IrinaDopson 2013-05-25T22:59:47Z Census data conversion to raster and aggregation.... https://community.esri.com/t5/arcgis-spatial-analyst-questions/census-data-conversion-to-raster-and-aggregation/m-p/39955#M487 <HTML><HEAD></HEAD><BODY><SPAN>Hello everyone. If anyone can help to solve the problem I will highly appreciate it!!!</SPAN><BR /><BR /><SPAN>I am trying to convert Census tract data for certain states (polygon) to raster and then aggregate cell size to 0.05.</SPAN><BR /><BR /><SPAN>But I have huge problem. First of all, when I am converting polygons to raster with cell size of 0.0001 I am loosing about 200,000 people. But the main problem is when I need to aggregate 0.0001 cells to 0.05 with the "SUM" method. The population adds up to VERY HUGE NUMBER.&nbsp; </SPAN><BR /><BR /><SPAN>I think it happens since the polygons originally have different size, and when Aggregate tool SUMs the values it add values that should just transfer one value for that polygon. I don't know any other methods </SPAN><BR /><BR /><SPAN>If anyone knows how to solve this problem please help.</SPAN><BR /><SPAN>Thank you in advance.</SPAN></BODY></HTML> Sat, 25 May 2013 22:59:47 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/census-data-conversion-to-raster-and-aggregation/m-p/39955#M487 IrinaDopson 2013-05-25T22:59:47Z