Package parasol :: Module parameters :: Class FeasiblePair

Class FeasiblePair

A FeasiblePair is a paired InputParam and OutputParam where the val property of the InputParam is found such that the val property of the OutputParam is equal to the desired feasibleVal for the mathematical model under consideration (i.e. as modeled by the function call, functionToCall).

Notes:

The InputParam's val property will be found in the range minVal to maxVal such that OutputParam.val==feasibleVal when calling functionToCall (i.e. A Feasibilty constraint is applied to the parameter pair).
It is the users responsibility to assure that InputParam.val is used in functionToCall AND that functionToCall reassigns the val property of OutputParam

Instance Methods

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__init__(self, inpParam=None, outParam=None, functionToCall=None, feasibleVal=0.0, tolerance=1e-006, maxLoops=40, failValue=None)
Initialize parameter properties

source code

feasibleFunc(self, val)

source code

reCalc(self)
calculate the value of inpParam.val that gives feasibleVal==outParam.val

source code

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

Instance Variables

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inpParam
InputParam object

outParam
OutputParam object

functionToCall
function using InputParam to calc OutputParam

feasibleVal
feasable value of OutputParam.val

tolerance
allowable error of OutputParam.val

maxLoops
maximum loops in root solver

failValue
returned value if solution attempt fails

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, inpParam=None, outParam=None, functionToCall=None, feasibleVal=0.0, tolerance=1e-006, maxLoops=40, failValue=None)
(Constructor)

source code

Initialize parameter properties

Parameters:

inpParam - input parameter object (InputParam)
outParam - output parameter object (OutputParam)
functionToCall - function using InputParam to calc OutputParam (callable)
feasibleVal - feasible value that OutputParam Must have (float)
tolerance - allowable error of OutputParam.val (float)
maxLoops - maximum loops in root solver
failValue - returned value if solution attempt fails, (if not input use inpParam.minVal)

Overrides: object.__init__

Class FeasiblePair

__init__(self, inpParam=None, outParam=None, functionToCall=None, feasibleVal=0.0, tolerance=1e-006, maxLoops=40, failValue=None) (Constructor)

init(self, inpParam=None, outParam=None, functionToCall=None, feasibleVal=0.0, tolerance=1e-006, maxLoops=40, failValue=None)
(Constructor)