B Нюq\+у@s<dZddlmZddgZGddДdeГZGddДdeГZdS)zа Special models useful for complex compound models where control is needed over which outputs from a source model are mapped to which inputs of a target model. щ)┌ FittableModel┌Mapping┌IdentitycsfeZdZdZdZdЗfddД ZeddДГZedd ДГZed dДГZ dd ДZ ddДZeddДГZЗZ S)raм Allows inputs to be reordered, duplicated or dropped. Parameters ---------- mapping : tuple A tuple of integers representing indices of the inputs to this model to return and in what order to return them. See :ref:`compound-model-mappings` for more details. n_inputs : int Number of inputs; if `None` (default) then ``max(mapping) + 1`` is used (i.e. the highest input index used in the mapping). name : str, optional A human-friendly name associated with this model instance (particularly useful for identifying the individual components of a compound model). meta : dict-like Free-form metadata to associate with this model. Raises ------ TypeError Raised when number of inputs is less that ``max(mapping)``. Examples -------- >>> from astropy.modeling.models import Polynomial2D, Shift, Mapping >>> poly1 = Polynomial2D(1, c0_0=1, c1_0=2, c0_1=3) >>> poly2 = Polynomial2D(1, c0_0=1, c1_0=2.4, c0_1=2.1) >>> model = (Shift(1) & Shift(2)) | Mapping((0, 1, 0, 1)) | (poly1 & poly2) >>> model(1, 2) # doctest: +FLOAT_CMP (17.0, 14.2) TNcsЬ|dkr*tddДtt|ГdГDГГ|_ntddДt|ГDГГ|_tddДtt|ГГDГГ|_||_ddД|jDГ|_ddД|jDГ|_t Гj ||d НdS) Ncss|]}dt|ГVqdS)┌xN)┌str)┌.0┌idxйr ·8lib/python3.7/site-packages/astropy/modeling/mappings.py· 3sz#Mapping.__init__..rcss|]}dt|ГVqdS)rN)r)rrr r r r6scss|]}dt|ГVqdS)rN)r)rrr r r r8scSsi|] }d|УqS)Fr )r┌keyr r r · :sz$Mapping.__init__..cSsi|] }d|УqS)Fr )rrr r r r ;s)┌name┌meta)┌tuple┌range┌max┌_inputs┌len┌_outputs┌_mappingZ_input_units_strictZ _input_units_allow_dimensionless┌super┌__init__)┌self┌mapping┌n_inputsrr)┌ __class__r r r1szMapping.__init__cCs|jS)zU The name(s) of the input variable(s) on which a model is evaluated. )r)rr r r ┌inputs?szMapping.inputscCs|jS)z*The name(s) of the output(s) of the model.)r)rr r r ┌outputsGszMapping.outputscCs|jS)z,Integers representing indices of the inputs.)r)rr r r rMszMapping.mappingcCs*|jdkrdа|jбSdа|j|jбSdS)Nzz)r┌formatr)rr r r ┌__repr__Ss zMapping.__repr__cshtИГ|jkr:|jdk r|jnd}tdа||jtИГбГВtЗfddД|jDГГ}|jdkrd|dS|S)Nrz{0} expects {1} inputs; got {2}c3s|]}И|VqdS)Nr )rr)┌argsr r r`sz#Mapping.evaluate..rщ)rrr┌ TypeErrorrrrZ n_outputs)rr!r┌resultr )r!r ┌evaluateYs zMapping.evaluatecsdy tЗfddДtИjГDГГ}Wn$tk rDtdаИjбГВYnXИа|б}Иj|_ Иj |_|S)a) A `Mapping` representing the inverse of the current mapping. Raises ------ `NotImplementedError` An inverse does no exist on mappings that drop some of its inputs (there is then no way to reconstruct the inputs that were dropped). c3s|]}Иjа|бVqdS)N)r┌index)rr)rr r rtsz"Mapping.inverse..z[Mappings such as {0} that drop one or more of their inputs are not invertible at this time.) rrr┌ ValueError┌NotImplementedErrorrrrrr)rr┌invr )rr ┌inversegs zMapping.inverse)NNN)┌__name__┌ __module__┌__qualname__┌__doc__┌linearr┌propertyrrrr r%r*┌ __classcell__r r )rr rs"cs:eZdZdZdZd ЗfddД ZddДZedd ДГZЗZ S)raс Returns inputs unchanged. This class is useful in compound models when some of the inputs must be passed unchanged to the next model. Parameters ---------- n_inputs : int Specifies the number of inputs this identity model accepts. name : str, optional A human-friendly name associated with this model instance (particularly useful for identifying the individual components of a compound model). meta : dict-like Free-form metadata to associate with this model. Examples -------- Transform ``(x, y)`` by a shift in x, followed by scaling the two inputs:: >>> from astropy.modeling.models import (Polynomial1D, Shift, Scale, ... Identity) >>> model = (Shift(1) & Identity(1)) | Scale(1.2) & Scale(2) >>> model(1,1) # doctest: +FLOAT_CMP (2.4, 2.0) >>> model.inverse(2.4, 2) # doctest: +FLOAT_CMP (1.0, 1.0) TNcs"tt|ГГ}tГj|||dНdS)N)rr)rrrr)rrrrr)rr r rвszIdentity.__init__cCs*|jdkrdа|jбSdа|j|jбSdS)Nzz)rrr)rr r r r жs zIdentity.__repr__cCs|S)zl The inverse transformation. In this case of `Identity`, ``self.inverse is self``. r )rr r r r*мszIdentity.inverse)NN) r+r,r-r.r/rr r0r*r1r r )rr rБs N)r.Zcorer┌__all__rrr r r r ┌su