Name the field 'TotArea', set the type to Double.
If the data is in a projected coordinate system, skip to the next step.Name the output (BufferA in this example).
Set the Input Features to the point shapefile. Open the Buffer (Analysis) geoprocessing tool from ArcToolbox, Analysis Tools > Proximity > Buffer.Add the point and polygon shapefiles or feature classes to ArcMap. If it is Object ID (OID), create a new field to calculate the OID values within, as the OID can change with these processes. It is required that each point and polygon feature is given a unique identifier. The entire process can be created inside of a model. This procedure assumes that attribute data is spread evenly across a polygon feature. The one-mile buffer around the point crosses 30% of a polygon with a population of 100, and 40% of a second polygon with a population of 10 therefore, the total population within the 1 mile buffer is 34: The current data is a census polygon feature class containing population values for each polygon feature. In most cases, the buffer does not encompass whole polygons, the procedure allows for calculating the percentage of a polygon the buffer encompasses, and then dividing the data by that percentage.Įxample: The total population within one mile of a point is desired. Instructions provided describe how to create a buffer around a point feature and use it to extract attributes from an overlapping polygon feature class. How To: Create a buffer around a point feature and use it to extract attributes from an overlapping polygon feature class Summary