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Spatial Analysis and Functions. There are a couple of ways to get to spatial analysis: Select by Location Geoprocessing Wizard. Proximity Analysis and Overlay Analysis. Proximity Analysis. Locating features based on their distance from other features Buffering features
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There are a couple of ways to get to spatial analysis:Select by LocationGeoprocessing Wizard
Proximity Analysis • Locating features based on their distance from other features • Buffering features • Spatial Join – closest features
Buffering Buffer around selected points at 20 Km with dissolved boundaries Buffer around selected points at 30 Km.
Buffering with multiple rings Buffer with 3 rings at 5 Km distance, overlapping boundaries.
Buffer the boundary of a polygon Inside and outside the polygon boundary with a 5 Km buffer.
Overlay Analysis Line in Polygon Point in Polygon
Overlay Analysis Polygon on Polygon
Union - OR Combines all attributes and features
Intersect - AND Only features and attributes in common, overlapping area.
Union • All input features must be polygons • A new shapefile is created with the combined information • The new shapefile inherits attributes from the two input files • You must recalculate area for the new features
Intersect • Input points, lines or polygons on polygons • For example – if you input lines with a polygon, you will get a line shapefile with the lines within the polygon. • The output line shapefile will inherit the attributes of the polygon. • The is an excellent analysis for determining area within a buffer.