程序包 org.meteoinfo.math.distribution

类 DistributionUtil

java.lang.Object

org.meteoinfo.math.distribution.DistributionUtil

public class DistributionUtil
extends Object

作者:

wyq

构造器概要

构造器

构造器	说明
DistributionUtil()

方法概要

限定符和类型	方法	说明
static double	cdf(org.apache.commons.math3.distribution.RealDistribution dis, Number x)	Cumulative distribution function at x
static Array	cdf(org.apache.commons.math3.distribution.RealDistribution dis, Array x)	Cumulative distribution function at x.
static double	logpdf(org.apache.commons.math3.distribution.NormalDistribution dis, Number x)	Natural logarithm probability density function at x
static Array	logpdf(org.apache.commons.math3.distribution.NormalDistribution dis, Array x)	Natural logarithm probability density function at x
static double	pdf(org.apache.commons.math3.distribution.RealDistribution dis, Number x)	Probability density function at x
static Array	pdf(org.apache.commons.math3.distribution.RealDistribution dis, Array x)	Probability density function at x
static double	pmf(org.apache.commons.math3.distribution.RealDistribution dis, Number x)	Probability mass function (PMF) for the distribution at x.
static Array	pmf(org.apache.commons.math3.distribution.RealDistribution dis, Array x)	Probability mass function (PMF) for the distribution at x.
static double	ppf(org.apache.commons.math3.distribution.RealDistribution dis, Number q)	Percent point function (inverse of cdf) at q.
static Array	ppf(org.apache.commons.math3.distribution.RealDistribution dis, Array q)	Percent point function (inverse of cdf) at q
static Array	rvs(org.apache.commons.math3.distribution.RealDistribution dis, int n)	Random variates of given type.

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

DistributionUtil

public DistributionUtil()

方法详细资料

rvs

public static Array rvs(org.apache.commons.math3.distribution.RealDistribution dis,
                        int n)

Random variates of given type.

参数:

dis - Distribution.

n - Size.

返回:

Rsult array.

pdf

public static double pdf(org.apache.commons.math3.distribution.RealDistribution dis,
                         Number x)

Probability density function at x

参数:

dis - Distribution.

x - X.

返回:

Probability density value.

pdf

public static Array pdf(org.apache.commons.math3.distribution.RealDistribution dis,
                        Array x)

Probability density function at x

参数:

dis - Distribution.

x - X array.

返回:

Probability density array.

logpdf

public static double logpdf(org.apache.commons.math3.distribution.NormalDistribution dis,
                            Number x)

Natural logarithm probability density function at x

参数:

dis - Distribution.

x - X.

返回:

Log probability density value.

logpdf

public static Array logpdf(org.apache.commons.math3.distribution.NormalDistribution dis,
                           Array x)

Natural logarithm probability density function at x

参数:

dis - Distribution.

x - X array.

返回:

Result array.

cdf

public static double cdf(org.apache.commons.math3.distribution.RealDistribution dis,
                         Number x)

Cumulative distribution function at x

参数:

dis - Distribution.

x - X.

返回:

Cumulative distribution value.

cdf

public static Array cdf(org.apache.commons.math3.distribution.RealDistribution dis,
                        Array x)

Cumulative distribution function at x.

参数:

dis - Distribution.

x - X array.

返回:

Result array.

pmf

public static double pmf(org.apache.commons.math3.distribution.RealDistribution dis,
                         Number x)

Probability mass function (PMF) for the distribution at x.

参数:

dis - Distribution.

x - X.

返回:

PMF value.

pmf

public static Array pmf(org.apache.commons.math3.distribution.RealDistribution dis,
                        Array x)

Probability mass function (PMF) for the distribution at x.

参数:

dis - Distribution.

x - X array.

返回:

Result array.

ppf

public static double ppf(org.apache.commons.math3.distribution.RealDistribution dis,
                         Number q)

Percent point function (inverse of cdf) at q.

参数:

dis - Distribution.

q - Lower tail probability

返回:

PMF value.

ppf

public static Array ppf(org.apache.commons.math3.distribution.RealDistribution dis,
                        Array q)

Percent point function (inverse of cdf) at q

参数:

dis - Distribution.

q - Q array.

返回:

Result array.