1.2.1.0 componentlist.isphysical

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componentlist.isphysical - Function

1.2.1 Check if a component is physically plausible

Description

The isphysical function is used to check if the specified components meet a number of criteria that must be true if the component could be used to model a physical process. These criteria are: 1. I ¿= sqrt(Q**2 + U**2 + V**2) 2. That the flux, when represented using the Stokes representation, has a zero imaginary value.

The “Flux properties” section of the ComponentModels module documentation describes how it is possible to generate a component which has non-zero imaginary value in the Stokes representation.

It is possible to check a number of components at once by specifying the indicies of all the components. The returned value will only be True if all the specified components are physical.

Arguments


Inputs
which	A vector of indices Indices must be between 0 and one less than the list length, inclusively
	allowed:	intArray
	Default:	-1

Returns
bool

Example

      cl2 = cltool()
      cl2.simulate(2)
      cl2.setflux(1, value=[10, 1+3j, 1-4j, 0], polarization="linear");
      print cl2.isphysical([0,1])

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