Object

org.locationtech.geomesa.utils.geohash.GeohashUtils

GeometrySizingUtilities

Related Doc: package GeohashUtils

Permalink

object GeometrySizingUtilities

Miscellaneous utilities for dealing with geometry-sizing, such as determining a reasonable number of bits (GeoHash) resolution for sizing polygons.

Linear Supertypes
AnyRef, Any
Ordering
  1. Alphabetic
  2. By inheritance
Inherited
  1. GeometrySizingUtilities
  2. AnyRef
  3. Any
  1. Hide All
  2. Show all
Visibility
  1. Public
  2. All

Type Members

  1. case class RecommendedResolution(bits: Int, expectedNumGeohashes: Long) extends Product with Serializable

    Permalink

    Container for the two values that together constitute a recommended number of bits resolution to use for GeoHashes for a polygon.

    Container for the two values that together constitute a recommended number of bits resolution to use for GeoHashes for a polygon.

    bits

    the resolution, in bits, for the target polygon

    expectedNumGeohashes

    how many GeoHashes we expect the target polygon to be decomposed into at the recommended resolution

Value Members

  1. final def !=(arg0: Any): Boolean

    Permalink
    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

    Permalink
    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

    Permalink
    Definition Classes
    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

    Permalink
    Definition Classes
    Any

  5. def clone(): AnyRef

    Permalink
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  6. final def eq(arg0: AnyRef): Boolean

    Permalink
    Definition Classes
    AnyRef

  7. def equals(arg0: Any): Boolean

    Permalink
    Definition Classes
    AnyRef → Any

  8. def finalize(): Unit

    Permalink
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  9. final def getClass(): Class[_]

    Permalink
    Definition Classes
    AnyRef → Any

  10. def getRecommendedBitsResolutionForPolygon(geom: Geometry, resolutions: ResolutionRange = new ResolutionRange(), constraints: SizingConstraints = new SizingConstraints()): RecommendedResolution

    Permalink

    Given a geometry and constraints, return a recommendation for the number of bits to use for expressing this polygon as a collection of GeoHashes.

    Given a geometry and constraints, return a recommendation for the number of bits to use for expressing this polygon as a collection of GeoHashes.

    The approach is simple: Given the MBR, compute the ratio of the area of the target geometry to its bounding rectangle. As the resolution of the GeoHashes increases, the ratio of the number that will be inside the target geometry to the total number inside the MBR should approach the ratio of the areas. This principle guides the estimate, and should be reasonable for any sufficiently (non-trivially) large value of bits-resolution.

    geom

    the target geometry

    resolutions

    the range of resolutions over which to range

    constraints

    defining the acceptance criteria for this search

    returns

    the pair of (recommended resolution, expected number of GeoHashes) that best satisfy the given constraints

  11. def hashCode(): Int

    Permalink
    Definition Classes
    AnyRef → Any

  12. final def isInstanceOf[T0]: Boolean

    Permalink
    Definition Classes
    Any

  13. final def ne(arg0: AnyRef): Boolean

    Permalink
    Definition Classes
    AnyRef

  14. final def notify(): Unit

    Permalink
    Definition Classes
    AnyRef

  15. final def notifyAll(): Unit

    Permalink
    Definition Classes
    AnyRef

  16. final def synchronized[T0](arg0: ⇒ T0): T0

    Permalink
    Definition Classes
    AnyRef

  17. def toString(): String

    Permalink
    Definition Classes
    AnyRef → Any

  18. final def wait(): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  19. final def wait(arg0: Long, arg1: Int): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  20. final def wait(arg0: Long): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from AnyRef

Inherited from Any

Ungrouped