chisquare_inv (pyleoclim.utils.wavelet.chisquare_inv)

pyleoclim.utils.wavelet.chisquare_inv(P, V)[source]

Returns the inverse of chi-square CDF with V degrees of freedom at fraction P

Parameters

P (float) – fraction
V (float) – degress of freedom

Returns

X – Inverse chi-square

Return type

float

References

Torrence, C. and G. P. Compo, 1998: A Practical Guide to Wavelet Analysis. Bull. Amer. Meteor. Soc., 79, 61-78. Python routines available at http://paos.colorado.edu/research/wavelets/