qubx.fit.Curve

Class Curve

object --+ | BaseCurve --+ | Curve

Fittable curve from a parsed Python expression; either simple algebraic, or system of ODEs; see acceptODEs.

Instance Methods

__init__(self, expr='a * x**k + b', locals=None, allow_params=True, allow_ode=True)
x.__init__(...) initializes x; see help(type(x)) for signature source code

eval(self, param_vals, xx, vvv=[])
Returns the numpy.array(dtype='float32', shape=xx.shape) calculated for xx given param_vals and extra named series. source code

pool_eval(self, xx, vvv, func, pval_by_name, avail)

source code

set_vars(self, var_names)
Tells the name and position of extra data series; if in expr these names will refer to vvv instead of params.

source code

setup_f(self)
Parses expr; called automatically when needed.

source code

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

Properties

[hide private]

Inherited from object: __class__

init(self, expr=`'a * x**k + b'`, locals=None, allow_params=True, allow_ode=True)
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Parameters:

expr - either the right-hand-side of "y=whatever*stuff(x)", or a system of ODEs; see acceptODEs
allow_params - whether to look for undefined names and add them to self.params
allow_ode - whether to allow system of ODEs

Overrides: object.__init__

eval(self, param_vals, xx, vvv=`[]`)

source code

Returns the numpy.array(dtype='float32', shape=xx.shape) calculated for xx given param_vals and extra named series.

Parameters:

param_vals - list of float corresponding to BaseCurve.params
xx - numpy.array(dtype='float32') of x coords
vvv - list of numpy.array(dtype='float32', shape=xx.shape); extra data series, must have already declared their names using set_vars

Returns:

numpy.array of y values

Overrides: BaseCurve.eval

set_vars(self, var_names)

source code

Tells the name and position of extra data series; if in expr these names will refer to vvv instead of params.

Parameters:

var_names - list of str, one per vvv you will be passing to eval()

Overrides: BaseCurve.set_vars

Class Curve

__init__(self, expr='a * x**k + b', locals=None, allow_params=True, allow_ode=True) (Constructor)

eval(self, param_vals, xx, vvv=[])

set_vars(self, var_names)

init(self, expr=`'a * x**k + b'`, locals=None, allow_params=True, allow_ode=True)
(Constructor)

eval(self, param_vals, xx, vvv=`[]`)