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c

geotrellis.spark.sigmoidal.Implicits

withRDDMultibandSigmoidalMethods

implicit class withRDDMultibandSigmoidalMethods[K, V] extends RDDMultibandSigmoidalMethods[K, V]

Linear Supertypes
RDDMultibandSigmoidalMethods[K, V], MethodExtensions[RDD[(K, V)]], Serializable, Serializable, AnyRef, Any
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  1. withRDDMultibandSigmoidalMethods
  2. RDDMultibandSigmoidalMethods
  3. MethodExtensions
  4. Serializable
  5. Serializable
  6. AnyRef
  7. Any
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Instance Constructors

  1. new withRDDMultibandSigmoidalMethods(self: RDD[(K, V)])(implicit arg0: (V) ⇒ MultibandTile)

Value Members

  1. val self: RDD[(K, V)]
    Definition Classes
    withRDDMultibandSigmoidalMethods → MethodExtensions
  2. def sigmoidal(alpha: Double, beta: Double): RDD[(K, MultibandTile)]

    Given parameters alpha and beta, return an RDD of tiles where the sigmoidal contrast operation has been performed on each band of each tile.

    Given parameters alpha and beta, return an RDD of tiles where the sigmoidal contrast operation has been performed on each band of each tile.

    The approach used is described here: https://www.imagemagick.org/Usage/color_mods/#sigmoidal

    alpha

    The center around-which the stretch is performed (given as a fraction)

    beta

    The standard deviation in the computation, used to avoid saturating the upper and lower parts of the gamut

    returns

    An RDD of output tiles

    Definition Classes
    RDDMultibandSigmoidalMethods