topic Get the sum of a Field in an attribute table in Spatial Statistics Questions https://community.esri.com/t5/spatial-statistics-questions/get-the-sum-of-a-field-in-an-attribute-table/m-p/58971#M193 <HTML><HEAD></HEAD><BODY><SPAN>Hopefully I can explain this properly, this is for a heat index choropleth map by census tract. Im trying to get the sum of a field (land area) for my census tracts in my attribute table and have that total in a new field or have that total so I can divide the total area of a region divided by a total area of census tracts within that region that fall in the high level of heat index so i can get a final percentage to put in a bar graph. Im not strong at coding, and im new to GIS and Arc. </SPAN><BR /><BR /><SPAN>Example:</SPAN><BR /><BR /><SPAN>total area of High index in the region / total area of region</SPAN><BR /><BR /><SPAN>Also, I have the areas of each census tract in my attribute table, but not the total area of the region. Im not even sure it possible to have a new field with just the total area of region. Any help is appreciated.</SPAN></BODY></HTML> Thu, 23 May 2013 14:54:05 GMT LucasRaposo 2013-05-23T14:54:05Z Get the sum of a Field in an attribute table https://community.esri.com/t5/spatial-statistics-questions/get-the-sum-of-a-field-in-an-attribute-table/m-p/58971#M193 <HTML><HEAD></HEAD><BODY><SPAN>Hopefully I can explain this properly, this is for a heat index choropleth map by census tract. Im trying to get the sum of a field (land area) for my census tracts in my attribute table and have that total in a new field or have that total so I can divide the total area of a region divided by a total area of census tracts within that region that fall in the high level of heat index so i can get a final percentage to put in a bar graph. Im not strong at coding, and im new to GIS and Arc. </SPAN><BR /><BR /><SPAN>Example:</SPAN><BR /><BR /><SPAN>total area of High index in the region / total area of region</SPAN><BR /><BR /><SPAN>Also, I have the areas of each census tract in my attribute table, but not the total area of the region. Im not even sure it possible to have a new field with just the total area of region. Any help is appreciated.</SPAN></BODY></HTML> Thu, 23 May 2013 14:54:05 GMT https://community.esri.com/t5/spatial-statistics-questions/get-the-sum-of-a-field-in-an-attribute-table/m-p/58971#M193 LucasRaposo 2013-05-23T14:54:05Z