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pylint compliant for py3, no object inheritance, static methods #221

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Nov 6, 2020
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pylint compliant for py3, no object inheritance, static methods #221

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32 changes: 19 additions & 13 deletions pygem/rbf_factory.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,15 +4,15 @@
import numpy as np


class classproperty(object):
class classproperty():
def __init__(self, f):
self.f = f

def __get__(self, obj, owner):
return self.f(owner)


class RBFFactory(object):
class RBFFactory():
"""
Factory class that spawns the radial basis functions.

Expand All @@ -24,6 +24,7 @@ class RBFFactory(object):
>>> for fname in RBFFactory.bases:
>>> y = RBFFactory(fname)(x)
"""
@staticmethod
def gaussian_spline(X, r=1):
"""
It implements the following formula:
Expand All @@ -40,6 +41,7 @@ def gaussian_spline(X, r=1):
result = np.exp(-(X * X) / (r * r))
return result

@staticmethod
def multi_quadratic_biharmonic_spline(X, r=1):
"""
It implements the following formula:
Expand All @@ -56,6 +58,7 @@ def multi_quadratic_biharmonic_spline(X, r=1):
result = np.sqrt((X * X) + (r * r))
return result

@staticmethod
def inv_multi_quadratic_biharmonic_spline(X, r=1):
"""
It implements the following formula:
Expand All @@ -73,6 +76,7 @@ def inv_multi_quadratic_biharmonic_spline(X, r=1):
result = 1.0 / (np.sqrt((X * X) + (r * r)))
return result

@staticmethod
def thin_plate_spline(X, r=1):
"""
It implements the following formula:
Expand All @@ -93,6 +97,7 @@ def thin_plate_spline(X, r=1):
result = np.where(arg > 0, result * np.log(arg), result)
return result

@staticmethod
def beckert_wendland_c2_basis(X, r=1):
"""
It implements the following formula:
Expand All @@ -114,6 +119,7 @@ def beckert_wendland_c2_basis(X, r=1):
result = first * second
return result

@staticmethod
def polyharmonic_spline(X, r=1, k=2):
"""
It implements the following formula:
Expand Down Expand Up @@ -162,13 +168,14 @@ def polyharmonic_spline(X, r=1, k=2):
## ##
############################################################################
__bases = {
'gaussian_spline': gaussian_spline,
'multi_quadratic_biharmonic_spline': multi_quadratic_biharmonic_spline,
'gaussian_spline': gaussian_spline.__func__,
'multi_quadratic_biharmonic_spline':
multi_quadratic_biharmonic_spline.__func__,
'inv_multi_quadratic_biharmonic_spline':
inv_multi_quadratic_biharmonic_spline,
'thin_plate_spline': thin_plate_spline,
'beckert_wendland_c2_basis': beckert_wendland_c2_basis,
'polyharmonic_spline': polyharmonic_spline
inv_multi_quadratic_biharmonic_spline.__func__,
'thin_plate_spline': thin_plate_spline.__func__,
'beckert_wendland_c2_basis': beckert_wendland_c2_basis.__func__,
'polyharmonic_spline': polyharmonic_spline.__func__
}

def __new__(self, fname):
Expand All @@ -177,11 +184,10 @@ def __new__(self, fname):
# implemented radial basis functions
if fname in self.bases:
return self.__bases[fname]
else:
raise NameError(
"""The name of the basis function in the parameters file is not
correct or not implemented. Check the documentation for
all the available functions.""")
raise NameError(
"""The name of the basis function in the parameters file is not
correct or not implemented. Check the documentation for
all the available functions.""")

@classproperty
def bases(self):
Expand Down