Class

org.apache.spark.rdd

DoubleRDDFunctions

Related Doc: package rdd

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class DoubleRDDFunctions extends Logging with Serializable

Extra functions available on RDDs of Doubles through an implicit conversion.

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Serializable, Serializable, Logging, AnyRef, Any
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  1. DoubleRDDFunctions
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Instance Constructors

  1. new DoubleRDDFunctions(self: RDD[Double])

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Value Members

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

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  2. final def ##(): Int

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

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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    protected[java.lang]
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    @throws( ... )
  6. final def eq(arg0: AnyRef): Boolean

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  7. def equals(arg0: Any): Boolean

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  8. def finalize(): Unit

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    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  9. final def getClass(): Class[_]

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  10. def hashCode(): Int

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  11. def histogram(buckets: Array[Double], evenBuckets: Boolean = false): Array[Long]

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    Compute a histogram using the provided buckets.

    Compute a histogram using the provided buckets. The buckets are all open to the right except for the last which is closed. e.g. for the array [1, 10, 20, 50] the buckets are [1, 10) [10, 20) [20, 50] e.g <=x<10, 10<=x<20, 20<=x<=50 And on the input of 1 and 50 we would have a histogram of 1, 0, 1

    Note

    If your histogram is evenly spaced (e.g. [0, 10, 20, 30]) this can be switched from an O(log n) insertion to O(1) per element. (where n = # buckets) if you set evenBuckets to true. buckets must be sorted and not contain any duplicates. buckets array must be at least two elements All NaN entries are treated the same. If you have a NaN bucket it must be the maximum value of the last position and all NaN entries will be counted in that bucket.

  12. def histogram(bucketCount: Int): (Array[Double], Array[Long])

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    Compute a histogram of the data using bucketCount number of buckets evenly spaced between the minimum and maximum of the RDD.

    Compute a histogram of the data using bucketCount number of buckets evenly spaced between the minimum and maximum of the RDD. For example if the min value is 0 and the max is 100 and there are two buckets the resulting buckets will be [0, 50) [50, 100]. bucketCount must be at least 1 If the RDD contains infinity, NaN throws an exception If the elements in RDD do not vary (max == min) always returns a single bucket.

  13. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean = false): Boolean

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  14. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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  15. final def isInstanceOf[T0]: Boolean

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  16. def isTraceEnabled(): Boolean

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    Logging
  17. def log: Logger

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  18. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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  19. def logDebug(msg: ⇒ String): Unit

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  20. def logError(msg: ⇒ String, throwable: Throwable): Unit

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  21. def logError(msg: ⇒ String): Unit

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  22. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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  23. def logInfo(msg: ⇒ String): Unit

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  24. def logName: String

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  25. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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    Logging
  26. def logTrace(msg: ⇒ String): Unit

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  27. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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  28. def logWarning(msg: ⇒ String): Unit

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  29. def mean(): Double

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    Compute the mean of this RDD's elements.

  30. def meanApprox(timeout: Long, confidence: Double = 0.95): PartialResult[BoundedDouble]

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    Approximate operation to return the mean within a timeout.

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

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  32. final def notify(): Unit

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  33. final def notifyAll(): Unit

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  34. def popStdev(): Double

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    Compute the population standard deviation of this RDD's elements.

    Compute the population standard deviation of this RDD's elements.

    Annotations
    @Since( "2.1.0" )
  35. def popVariance(): Double

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    Compute the population variance of this RDD's elements.

    Compute the population variance of this RDD's elements.

    Annotations
    @Since( "2.1.0" )
  36. def sampleStdev(): Double

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    Compute the sample standard deviation of this RDD's elements (which corrects for bias in estimating the standard deviation by dividing by N-1 instead of N).

  37. def sampleVariance(): Double

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    Compute the sample variance of this RDD's elements (which corrects for bias in estimating the variance by dividing by N-1 instead of N).

  38. def stats(): StatCounter

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    Return a org.apache.spark.util.StatCounter object that captures the mean, variance and count of the RDD's elements in one operation.

  39. def stdev(): Double

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    Compute the population standard deviation of this RDD's elements.

  40. def sum(): Double

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    Add up the elements in this RDD.

  41. def sumApprox(timeout: Long, confidence: Double = 0.95): PartialResult[BoundedDouble]

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    Approximate operation to return the sum within a timeout.

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

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  43. def toString(): String

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  44. def variance(): Double

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    Compute the population variance of this RDD's elements.

  45. final def wait(): Unit

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

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

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Inherited from Serializable

Inherited from Serializable

Inherited from Logging

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