Package pygeodesy :: Module fstats :: Class Fcook

Class Fcook

  object --+            
           |            
named._Named --+        
               |        
    _FstatsNamed --+    
                   |    
         _FstatsBase --+
                       |
                      Fcook

Cook's RunningStats computing the running mean, median and (sample) kurtosis, skewness, variance, standard deviation and Jarque-Bera normality.

See Also: Fwelford and Higher-order statistics.

Instance Methods

__init__(self, xs=None, name='')
New Fcook stats accumulator.

__iadd__(self, other)
Add other to this Fcook instance.

fadd(self, xs, sample=False)
Accumulate and return the current count.

fjb(self, xs=None, sample=True, excess=True)
Accumulate and compute the current Jarque-Bera normality.

fjb_(self, *xs, **sample_excess)
Accumulate and compute the current Jarque-Bera normality.

fkurtosis(self, xs=None, sample=False, excess=True)
Accumulate and return the current kurtosis.

fkurtosis_(self, *xs, **sample_excess)
Accumulate and return the current kurtosis.

fmedian(self, xs=None)
Accumulate and return the current median.

fmedian_(self, *xs)
Accumulate and return the current median.

fskewness(self, xs=None, sample=False)
Accumulate and return the current skewness.

fskewness_(self, *xs, **sample)
Accumulate and return the current skewness.

toFwelford(self, name='')
Return an Fwelford equivalent.

Inherited from _FstatsBase: fadd_, fmean, fmean_, fstdev, fstdev_, fvariance, fvariance_

Inherited from _FstatsNamed: __add__, __float__, __int__, __len__, __neg__, __radd__, __str__, copy, fcopy

Inherited from named._Named: __imatmul__, __matmul__, __repr__, __rmatmul__, attrs, classof, dup, methodname, rename, toRepr, toStr, toStr2

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Properties

Inherited from named._Named: classname, classnaming, iteration, name, named, named2, named3, named4, sizeof

Inherited from object: __class__

Method Details

init (self, xs=None, name='')
(Constructor)

New Fcook stats accumulator.

Arguments:

xs - Iterable with initial values (Scalars).
name - Optional name (str).

Overrides: object.__init__

See Also: Method Fcook.fadd.

iadd (self, other)

Add other to this Fcook instance.

Arguments:

other - An Fcook instance or Scalars, meaning one or more scalar or Fsum instances.

Returns:

This instance, updated (Fcook).

Raises:

TypeError - Invalid other type.
ValueError - Invalid other.

See Also: Method Fcook.fadd.

fadd (self, xs, sample=False)

Accumulate and return the current count.

Arguments:

xs - Iterable with additional values (Scalars, meaning scalar or Fsum instances).
sample - Return the sample instead of the entire population count (bool).

Returns:

Current, running (sample) count (int).

Raises:

OverflowError - Partial 2sum overflow.
TypeError - Non-scalar xs value.
ValueError - Invalid or non-finite xs value.

Overrides: _FstatsBase.fadd

See Also: online_kurtosis.

fjb (self, xs=None, sample=True, excess=True)

Accumulate and compute the current Jarque-Bera normality.

Arguments:

xs - Iterable with additional values (Scalars).
sample - Return the sample normality (bool), default.
excess - Return the excess kurtosis (bool), default.

Returns:

Current, running (sample) Jarque-Bera normality (float).

See Also: Method Fcook.fadd.

fjb_ (self, *xs, **sample_excess)

Accumulate and compute the current Jarque-Bera normality.

See Also: Method Fcook.fjb.

fkurtosis (self, xs=None, sample=False, excess=True)

Accumulate and return the current kurtosis.

Arguments:

xs - Iterable with additional values (Scalars).
sample - Return the sample instead of the entire population kurtosis (bool).
excess - Return the excess kurtosis (bool), default.

Returns:

Current, running (sample) kurtosis or excess kurtosis (float).

See Also:: Kurtosis Formula and Mantalos., Method Fcook.fadd.

fkurtosis_ (self, *xs, **sample_excess)

Accumulate and return the current kurtosis.

See Also: Method Fcook.fkurtosis.

fmedian (self, xs=None)

Accumulate and return the current median.

Arguments:

xs - Iterable with additional values (Scalars).

Returns:

Current, running median (float).

fmedian_ (self, *xs)

Accumulate and return the current median.

See Also: Method Fcook.fmedian.

fskewness (self, xs=None, sample=False)

Accumulate and return the current skewness.

Arguments:

xs - Iterable with additional values (Scalars).
sample - Return the sample instead of the entire population skewness (bool).

Returns:

Current, running (sample) skewness (float).

See Also:: Skewness Formula and Mantalos., Method Fcook.fadd.

fskewness_ (self, *xs, **sample)

Accumulate and return the current skewness.

See Also: Method Fcook.fskewness.

Class Fcook

__init__ (self, xs=None, name='') (Constructor)

__iadd__ (self, other)

fadd (self, xs, sample=False)

fjb (self, xs=None, sample=True, excess=True)

fjb_ (self, *xs, **sample_excess)

fkurtosis (self, xs=None, sample=False, excess=True)

fkurtosis_ (self, *xs, **sample_excess)

fmedian (self, xs=None)

fmedian_ (self, *xs)

fskewness (self, xs=None, sample=False)

fskewness_ (self, *xs, **sample)

init (self, xs=None, name='')
(Constructor)

iadd (self, other)