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Spatial Analysis and Functions

Learn about spatial analysis methods including proximity, buffering, overlay analysis, and spatial join in this comprehensive guide on utilizing GIS tools effectively.

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Spatial Analysis and Functions

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  1. Spatial Analysis and Functions

  2. There are a couple of ways to get to spatial analysis:Select by LocationGeoprocessing Wizard

  3. Proximity AnalysisandOverlay Analysis

  4. Proximity Analysis • Locating features based on their distance from other features • Buffering features • Spatial Join – closest features

  5. Buffering Buffer around selected points at 20 Km with dissolved boundaries Buffer around selected points at 30 Km.

  6. Buffering with multiple rings Buffer with 3 rings at 5 Km distance, overlapping boundaries.

  7. Buffer the boundary of a polygon Inside and outside the polygon boundary with a 5 Km buffer.

  8. Polygon buffer including the polygon

  9. Buffer using attribute values.

  10. Buffer using a graphics

  11. Spatial Join – Distance Calculation

  12. Overlay Analysis Line in Polygon Point in Polygon

  13. Overlay Analysis Polygon on Polygon

  14. Union - OR Combines all attributes and features

  15. Intersect - AND Only features and attributes in common, overlapping area.

  16. 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

  17. 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.

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