Package org.h2gis.functions.spatial.properties

Class ST_CompactnessRatio

java.lang.Object
org.h2gis.api.AbstractFunction
org.h2gis.api.DeterministicScalarFunction
org.h2gis.functions.spatial.properties.ST_CompactnessRatio
All Implemented Interfaces:
org.h2gis.api.Function, org.h2gis.api.ScalarFunction
public class ST_CompactnessRatio extends org.h2gis.api.DeterministicScalarFunction
ST_CompactnessRatio computes the perimeter of a circle whose area is equal to the given polygon's area, and returns the ratio of this computed perimeter to the given polygon's perimeter. Equivalent definition: ST_CompactnessRatio returns the square root of the polygon's area divided by the area of the circle with circumference equal to the polygon's perimeter. Note: This uses the 2D perimeter/area of the polygon.
Author:
Adam Gouge

  • Field Summary

    Fields inherited from interface org.h2gis.api.Function

    PROP_NAME, PROP_REMARKS

    Fields inherited from interface org.h2gis.api.ScalarFunction

    PROP_DETERMINISTIC

  • Constructor Summary

    Constructors
    Constructor
    Description
    ST_CompactnessRatio()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static Double
    computeCompacity(org.locationtech.jts.geom.Geometry geom)
    Returns the compactness ratio of the given polygon
    String
    getJavaStaticMethod()
     

    Methods inherited from class org.h2gis.api.AbstractFunction

    addProperty, getProperty, removeProperty

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface org.h2gis.api.Function

    getProperty

  • Constructor Details

    • ST_CompactnessRatio

      public ST_CompactnessRatio()

  • Method Details

    • getJavaStaticMethod

      public String getJavaStaticMethod()

    • computeCompacity

      public static Double computeCompacity(org.locationtech.jts.geom.Geometry geom)
      Returns the compactness ratio of the given polygon
      Parameters:
      geom - Geometry
      Returns:
      The compactness ratio of the given polygon