SpatialQuery

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. def KNN[T <: Shape3D](queryObject: T, rdd: RDD[T], k: Int, unique: Boolean = false)(implicit arg0: ClassTag[T]): List[T]

   

   Finds the K nearest neighbors of the query object.

   Finds the K nearest neighbors of the query object. The naive implementation here searches through all the the objects in the RDD to get the KNN. The nearness of the objects here is decided on the basis of the distance between their centers.

   queryObject

   object to which the knn are to be found

   rdd

   RDD of a Shape3D (Shape3DRDD)

   k

   number of nearest neighbors are to be found

   returns

   knn

5. def KNNEfficient[A <: Shape3D, B <: Shape3D](queryObject: A, rdd: RDD[B], k: Int)(implicit arg0: ClassTag[A], arg1: ClassTag[B]): List[B]

   

   Much more efficient implementation of the KNN query above.

   Much more efficient implementation of the KNN query above. First we seek the partitions in which the query object belongs and we will look for the knn only in those partitions. After this if the limit k is not satisfied, we keep looking similarly in the neighbors of the containing partitions.

   queryObject

   object to which the knn are to be found

   rdd

   RDD of a Shape3D (Shape3DRDD)

   k

   number of nearest neighbors are to be found

   returns

   knn

6. final def asInstanceOf[T0]: T0

   

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7. def clone(): AnyRef

   

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

   

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9. def equals(arg0: Any): Boolean

   

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10. def finalize(): Unit

    

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

    

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12. def hashCode(): Int

    

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13. final def isInstanceOf[T0]: Boolean

    

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

    

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15. final def notify(): Unit

    

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16. final def notifyAll(): Unit

    

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

    

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18. def toString(): String

    

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19. final def wait(): Unit

    

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

    

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

    

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