Package pygeodesy :: Module fstats :: Class Flinear |
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# Class Flinear

      object --+
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    named._Named --+
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        _FstatsNamed --+
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                      Flinear

Cook's `RunningRegression` computing the running slope, intercept and correlation of a linear regression.

Instance Methods
__init__(self, xs=None, ys=None, Fstats=<class 'pygeodesy.fstats.Fwelford'>, **name) New Flinear regression accumulator. |
__iadd__(self, other) Add `other` to this instance. |
fadd(self, xs, ys, sample=False) Accumulate and return the current count. |
fadd_(self, *x_ys, **sample) Accumulate and return the current count. |
fcorrelation(self, **sample) Return the current, running (sample) correlation (`float`). |
fintercept(self, **sample) Return the current, running (sample) intercept (`float`). |
fslope(self, **sample) Return the current, running (sample) slope (`float`). |
Inherited from `_FstatsNamed`: `__add__`, `__float__`, `__int__`, `__len__`, `__neg__`, `__radd__`, `__str__`, `copy`, `fcopy` Inherited from `named._Named`: `__format__`, `__imatmul__`, `__matmul__`, `__repr__`, `__rmatmul__`, `attrs`, `classof`, `dup`, `methodname`, `rename`, `renamed`, `toRepr`, `toStr`, `toStr2` Inherited from `object`: `__delattr__`, `__getattribute__`, `__hash__`, `__new__`, `__reduce__`, `__reduce_ex__`, `__setattr__`, `__sizeof__`, `__subclasshook__`

Properties
| x Get the `x` accumulator (Fcook or Fwelford).
| y Get the `y` accumulator (Fcook or Fwelford).
Inherited from `named._Named`: `classname`, `classnaming`, `iteration`, `name`, `named`, `named2`, `named3`, `named4`, `sizeof`, `typename` Inherited from `object`: `__class__`

Method Details

### __init__ (self, xs=None, ys=None, Fstats=<class 'pygeodesy.fstats.Fwelford'>, **name) (Constructor) |
New Flinear regression accumulator. Arguments: `xs` - Iterable of initial `x` values (each `scalar`, an Fsum or Fsum2Tuple). `ys` - Iterable of initial `y` values (each `scalar`, an Fsum or Fsum2Tuple). `Fstats` - Class for `xs` and `ys` values (Fcook or Fwelford). `name` - Optional `name=NN` (`str`). Raises: `TypeError` - `Fstats` not Fcook or Fwelford. Overrides: object.__init__ See Also: Method Flinear.fadd.

### __iadd__ (self, other) |
Add `other` to this instance. Arguments: `other` - An Flinear instance or an iterable of `x_ys` values, see method `fadd_`. Returns: This instance, updated (Flinear). Raises: `TypeError` - Invalid `other` or the `other` and these `x` and `y` accumulators are not compatible. `ValueError` - Invalid or odd-length `other`. See Also: Method Flinear.fadd_.

### fadd (self, xs, ys, sample=False) |
Accumulate and return the current count. Arguments: `xs` - Iterable of additional `x` values (each `scalar`, an Fsum or Fsum2Tuple). `ys` - Iterable of additional `y` values (each `scalar`, an Fsum or Fsum2Tuple). `sample` - Use `sample=True` for the sample count instead of the population count (`bool`). Returns: Current, running (sample) count (`int`). Raises: `OverflowError` - Partial `2sum` overflow. `TypeError` - Invalid `xs` or `ys`. `ValueError` - Invalid or non-finite `xs` or `ys`.

### fadd_ (self, *x_ys, **sample) |
Accumulate and return the current count. Arguments: `x_ys` - Individual, alternating `x, y, x, y, ...` values (each `scalar`, an Fsum or Fsum2Tuple). See Also: Method `Flinear.fadd` for further details.

### fcorrelation (self, **sample) |
Return the current, running (sample) correlation (`float`). Arguments: `sample` - Use `sample=True` for the sample correlation instead of the population correlation (`bool`).

### fintercept (self, **sample) |
Return the current, running (sample) intercept (`float`). Arguments: `sample` - Use `sample=True` for the sample intercept instead of the population intercept (`bool`).

### fslope (self, **sample) |
Return the current, running (sample) slope (`float`). Arguments: `sample` - Use `sample=True` for the sample slope instead of the population slope (`bool`).

Property Details

### x Get the `x` accumulator (Fcook or Fwelford). Get method: x(self) - Get the `x` accumulator (Fcook or Fwelford). Set method: _fset_error(inst, val) - Throws an `AttributeError`, always. Delete Method: _fdel(inst) - Zap the cached/memoized `property` value.

### y Get the `y` accumulator (Fcook or Fwelford). Get method: y(self) - Get the `y` accumulator (Fcook or Fwelford). Set method: _fset_error(inst, val) - Throws an `AttributeError`, always. Delete Method: _fdel(inst) - Zap the cached/memoized `property` value.