SineSplineDriftModel = class SineSplineDriftModel(NonLinearModel) |
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SineSplineDriftModel(knots, order=3, degree=1, copy=None, fixed=None, **kwargs)
Sine with drifting frequency and splineslike amplitudes/phases.
nd = degree + 1
nh = len( knots ) + order - 1
xx = 2 π x PM( x:p[:nd] )
A = SM( x:p[nd:nd+nh] )
B = SM( x:p[nd+nh:] )
f( x:p ) = A cos( xx ) + B sin( xx )
Where PM is a PolynomialModel and SM a SplinesModel
It is a linear model with 2 * ( len(knots) + order - 1 ) papameters.
Examples
--------
>>> knots = [3.0*k for k in range( 11 )]
>>> sine = SineSplineDriftModel( 150, knots ) # fixed frequency of 150 Hz
>>> print( sine.npbase ) # number of parameters
26
Attributes
----------
degree : int
degree of the polynomial governing the frequency of the sine
knots : array_like
positions of the spline knots
order : int
order of the spline. default: 3
cm : SplinesModel
amplitude of the cosine
sm : SplinesModel
amplitude of the sine
Attributes from Model
---------------------
npchain, parameters, stdevs, xUnit, yUnit
Attributes from FixedModel
--------------------------
npmax, fixed, parlist, mlist
Attributes from BaseModel
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npbase, ndim, priors, posIndex, nonZero,
tiny, deltaP, parNames |
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- Method resolution order:
- SineSplineDriftModel
- NonLinearModel
- Model
- FixedModel
- BaseModel
- builtins.object
Constructor:
- SineSplineDriftModel( knots, order=3, degree=1, copy=None, fixed=None, **kwargs )
- Sine model of a polynomially drifting frequency with a splineslike changing
amplitude/phase
Number of parameters is 2 * ( len(knots) + order - 1 ) + degree + 1.
Parameters
----------
knots : array of float
the knot positions of the amplitude splines
order : int
order of the splines
degree : int
degree of the drifting polynomial
copy : SineSplineDriftModel
model to be copied
fixed : dict
If not None raise AttributeError.
Raises
------
AttributeError : When fixed is not None
Methods defined here:
- baseDerivative( xdata, params )
- Returns the derivative of f to x (df/dx) at the input value.
Parameters
----------
xdata : array_like
values at which to calculate the partials
params : array_like
parameters of the model
- baseName()
- Returns a string representation of the model.
- baseParameterUnit( k )
- Return the name of a parameter.
Parameters
----------
k : int
the kth parameter.
- basePartial( xdata, params, parlist=None )
- Returns the partials at the input value.
Parameters
----------
xdata : array_like
values at which to calculate the partials
params : array_like
parameters of the model (ignored in LinearModels)
parlist : array_like
list of indices active parameters (or None for all)
- baseResult( xdata, params )
- Returns the result of the model function.
Parameters
----------
xdata : array_like
values at which to calculate the result
params : array_like
values for the parameters.
- copy()
- Copy method.
- getAmplitudes( xdata, params )
- Return the amplitudes if cosine and sine, resp.
Parameters
----------
xdata : array_like
values at which to calculate the partials
params : array_like
parameters of the model
Methods inherited from NonLinearModel:
Methods inherited from Model:
Overloaded operators and aliases
Other methods
- addModel( model )
- appendModel( model, operation )
- assignDF1( partial, i, dpi )
- assignDF2( partial, i, dpi )
- chainLength()
- correctParameters( params )
- derivative( xdata, param, useNum=False )
- divideModel( model )
- domain2Unit( dvalue, kpar=None )
- getIntegralUnit()
- getLimits()
- getLinearIndex()
- getNumberOfParameters()
- getParameterName( k )
- getParameterUnit( k )
- getPrior( k )
- hasLimits( fitindex=None )
- hasPriors( isBound=True )
- isDynamic()
- isNullModel()
- isolateModel( k )
- multiplyModel( model )
- nextPrior()
- numDerivative( xdata, param )
- numPartial( xdata, param )
- operate( res, pars, next )
- partialDomain2Unit( dvalue )
- pipeModel( model )
- pipe_0( dGd, dHdG)
- pipe_1( dGd, dHdG)
- pipe_2( dGd, dHdG)
- pipe_3( dGd, dHdG)
- pipe_4( dGdx, dHdG)
- pipe_5( dGdx, dHdG)
- pipe_6( dGdx, dHdG)
- pipe_7( dGdx, dHdG)
- pipe_8( dGdx, dHdG)
- pipe_9( dGdx, dHdG)
- result( xdata, param=None )
- selectPipe( ndim, ninter, ndout )
- setLimits( lowLimits=None, highLimits=None )
- setPrior( k, prior=None, **kwargs )
- shortName()
- strictNumericDerivative( xdata, param )
- strictNumericPartial( xdata, params, parlist=None )
- subtractModel( model )
- testPartial( xdata, params, silent=True )
- unit2Domain( uvalue, kpar=None )
Methods inherited from FixedModel:
Methods inherited from BaseModel:
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