Smooths sharp angles in lines to improve aesthetic or cartographic quality.

• There are two smoothing methods to choose from:
  • The Polynomial Approximation with Exponential Kernel (PAEK) method (PAEK in Python) smooths lines based on a smoothing tolerance. Each smoothed line may have more vertices than its source line. The Smoothing Tolerance parameter controls the length of a "moving" path used in calculating the new vertices. The shorter the length the more detail that will be preserved and the longer the processing time.
  • The Bezier interpolation method (BEZIER_INTERPOLATION in Python) smooths lines without using a tolerance by creating Bezier curves to match the input lines. If the output is a shapefile, the Bezier curves will be approximated, since true Bezier curves cannot be storied in shapefiles.
• Smoothing may introduce topological errors such as line crossings. Use the Flag errors option (FLAG_ERRORS in Python) in the Handle Topological Errors parameter to identify these errors. Two fields will be added—InLine_FID and SmoLnFlag—to contain input feature IDs and topological errors. Values of 1 in the SmoLnFlag field indicate a topology error; 0 (zero) indicates no error. The InLineFID field links the output lines to their input lines. The Flag errors option cannot be used within an edit session.

Invalid (self-intersecting) geometry may be created during the smoothing process and will be repaired but not improved. For example, if a line self-crosses it will become a multipart line but will still appear self-crossing.

Viz také:http://desktop.arcgis.com/en/arcmap/10.3/tools/cartography-toolbox/smooth-line.htm