parabola on a log-scale added
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@ -133,6 +133,30 @@ class Parabola:
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return c * (x-x0)**2 + y0
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class ParabolaLog:
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"""
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Parabola (on a log-scale) with vertex :math:`(x_0, y_0)`
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.. math::
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y = C\cdot (x-x_{0}) + y_0
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Args:
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x (array_like): Input values
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c (float): Slope
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x0 (float): x position of vertex
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y0 (float): y position of vertex
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"""
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type = 'Basic'
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name = 'Log-Parabola'
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equation = 'exp[C*(x-x_{0})^{2} + y_{0}]'
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params = ['C', 'x_{0}', 'y_{0}']
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@staticmethod
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def func(x, c, x0, y0):
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return np.exp(c * (x-x0)**2 + y0)
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class PowerLawCross:
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"""
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Crossover between power laws
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