numpy.RankWarning
-
exception numpy.RankWarning[source] -
Issued by
polyfitwhen the Vandermonde matrix is rank deficient.For more information, a way to suppress the warning, and an example of
RankWarningbeing issued, seepolyfit.
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https://docs.scipy.org/doc/numpy-1.15.4/reference/generated/numpy.RankWarning.html