mapparms(old, new)
Return the parameters of the linear map offset + scale*x
that maps :None:None:`old` to :None:None:`new` such that old[i] -> new[i]
, i = 0, 1
.
Also works for complex numbers, and thus can be used to calculate the parameters required to map any line in the complex plane to any other line therein.
Domains. Each domain must (successfully) convert to a 1-d array containing precisely two values.
The map L(x) = offset + scale*x
maps the first domain to the second.
Linear map parameters between domains.
>>> from numpy.polynomial import polyutils as pu
... pu.mapparms((-1,1),(-1,1)) (0.0, 1.0)
>>> pu.mapparms((1,-1),(-1,1)) (-0.0, -1.0)
>>> i = complex(0,1)See :
... pu.mapparms((-i,-1),(1,i)) ((1+1j), (1-0j))
The following pages refer to to this document either explicitly or contain code examples using this.
numpy.polynomial.polyutils.mapdomain
numpy.polynomial.polyutils.getdomain
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