Python Warning, possibly Numpy

Question

As I run my code I get these warnings, allways in groups of four, sporadicly. I have tried to locate the source by placing debug messages before and after sertain 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

Answer 1

It looks like a floating-point calculation error. Check the numpy.seterr function to get more information about where it happens.