As I run my code I get these warnings, always in groups of four, sporadically. I have tried to locate the source by placing debug messages before and after certain statements to pin-point its 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 this is a Numpy warning, and what is a double scalar?
From Numpy I use
min(), argmin(), mean() and random.randn()
I also use Matplotlib
It looks like a floating-point calculation error. Check the numpy.seterr function to get more information about where it happens.