python - 'invalid value encountered in double_scalars' warning, possibly numpy -

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as run code these warnings, in groups of four, sporadically. have tried locate source placing debug messages before , after statements pin-point origin.

warning: invalid value encountered in double_scalars warning: invalid value encountered in double_scalars warning: invalid value encountered in double_scalars warning: invalid value encountered in double_scalars

is numpy warning, , double scalar?

from numpy use

min(), argmin(), mean() , random.randn()

i use matplotlib

it looks floating-point calculation error. check numpy.seterr function more information happens.


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