程序包 org.meteoinfo.ndarray

类 MAVector

  • public class MAVector
extends java.lang.Object
    Abstraction for vector operations. A vector is a rank-1 Array. All operations done in double precision
    作者:

    • 构造器概要

      构造器 
      构造器 说明
      MAVector​(double[] values)
      Create an MAVector out of a double array
      MAVector​(int nelems)
      Create an MAVector of the given length.
      MAVector​(Array a)
      Create an MAVector using the given rank-1 array.

    • 方法概要

      所有方法 实例方法 具体方法 
      修饰符和类型 方法 说明
      MAVector copy()
      Create a new MAVector that is the same as this one, with a copy of the backing store.
      double cos​(MAVector v)
      Cos between two vectors = dot(v) / norm() * norm(v)
      double dot​(MAVector v)
      Dot product of 2 vectors
      double getDouble​(int i)  
      int getNelems()  
      double norm()
      Get the L2 norm of this vector.
      void normalize()
      Normalize this vector, so it has norm = 1.0.
      void setDouble​(int i, double val)  

      • 从类继承的方法 java.lang.Object

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

    • 构造器详细资料

      • MAVector

        public MAVector​(double[] values)
        Create an MAVector out of a double array

      • MAVector

        public MAVector​(int nelems)
        Create an MAVector of the given length.

      • MAVector

        public MAVector​(Array a)
        Create an MAVector using the given rank-1 array.
        参数:
        a - rank-1 array
        抛出:
        java.lang.IllegalArgumentException - is a is not rank 1

    • 方法详细资料

      • getNelems

        public int getNelems()

      • getDouble

        public double getDouble​(int i)

      • setDouble

        public void setDouble​(int i,
                      double val)

      • copy

        public MAVector copy()
        Create a new MAVector that is the same as this one, with a copy of the backing store.

      • cos

        public double cos​(MAVector v)
        Cos between two vectors = dot(v) / norm() * norm(v)
        参数:
        v - cosine with this vector
        返回:
        double result: cos between this and v
        抛出:
        java.lang.IllegalArgumentException - if nelems != v.getNelems().

      • dot

        public double dot​(MAVector v)
        Dot product of 2 vectors
        参数:
        v - dot product with this vector
        返回:
        double result: dot product
        抛出:
        java.lang.IllegalArgumentException - if nelems != v.getNelems().

      • norm

        public double norm()
        Get the L2 norm of this vector.
        返回:
        double norm

      • normalize

        public void normalize()
        Normalize this vector, so it has norm = 1.0.