Package noaa.coastwatch.util.expression

Class JELParser.ExtrasLibrary

java.lang.Object
noaa.coastwatch.util.expression.JELParser.ExtrasLibrary
Enclosing class:
JELParser
public static class JELParser.ExtrasLibrary extends Object
Implements a number of additional constants and methods for JEL expressions to use.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static double
    NaN
    The Not-a-Number value as a double.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ExtrasLibrary()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static double
    acosh(double x)
    Computes the inverse hyperbolic cosine of a value.
    static double
    asinh(double x)
    Computes the inverse hyperbolic sin of a value.
    static double
    atanh(double x)
    Computes the inverse hyperbolic tangent of a value.
    static double
    dist(double lat1, double lon1, double lat2, double lon2)
    Computes the physical distance between two locations in kilometers.
    static double
    getValue(int index, double[] array)
    Gets the specified value from the array, or NaN if the index is -1.
    static float
    getValue(int index, float[] array)
    Gets the specified value from the array, or NaN if the index is -1.
    static int
    indexOfMax(double[] values)
    Gets the index of the maximum value in the array, or -1 if there is no maximum (ie: all values are NaN).
    static int
    indexOfMin(double[] values)
    Gets the index of the minimum value in the array, or -1 if there is no minimum (ie: all values are NaN).
    static boolean
    isNaN(double value)
    Determines if a double is the NaN value.
    static double
    sum(double[] values)
    Computes a sum of values.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • NaN

      public static double NaN
      The Not-a-Number value as a double.

  • Constructor Details

    • ExtrasLibrary

      public ExtrasLibrary()

  • Method Details

    • asinh

      public static double asinh(double x)
      Computes the inverse hyperbolic sin of a value.

    • acosh

      public static double acosh(double x)
      Computes the inverse hyperbolic cosine of a value.

    • atanh

      public static double atanh(double x)
      Computes the inverse hyperbolic tangent of a value.

    • sum

      public static double sum(double[] values)
      Computes a sum of values.

    • isNaN

      public static boolean isNaN(double value)
      Determines if a double is the NaN value.

    • dist

      public static double dist(double lat1, double lon1, double lat2, double lon2)
      Computes the physical distance between two locations in kilometers.

    • indexOfMin

      public static int indexOfMin(double[] values)
      Gets the index of the minimum value in the array, or -1 if there is no minimum (ie: all values are NaN).

    • indexOfMax

      public static int indexOfMax(double[] values)
      Gets the index of the maximum value in the array, or -1 if there is no maximum (ie: all values are NaN).

    • getValue

      public static double getValue(int index, double[] array)
      Gets the specified value from the array, or NaN if the index is -1.

    • getValue

      public static float getValue(int index, float[] array)
      Gets the specified value from the array, or NaN if the index is -1.