How to get more detailed error information numpy for "RuntimeWarning: invalid value encountered in multiply" error
numpy, python, runtime-error
Solution
You can probably at least get more information on the type of error by `numpy.seterrcall` (in conjunction with `numpy.seterr` as demonstrated in the link). As far as figuring out which array is giving the problems, that probably isn't possible as `numpy` necessarily creates temporary arrays:
a = b + (c*d)
# ^This creates a temporary array before adding it to `a`
Of course, you could use `seterr` to raise exceptions instead of warnings if you want to know what line number is the offending one in your code.
Problem
Is there a way to get more detailed from numpy for the error message "RuntimeWarning: invalid value encountered in multiply" It comes from a certain line in the code where I"m doing a number of array operations. Can I get numpy to report: (1) More information on the invalid value (inf? nan?) (2) The array entry that is causing the problem? Of course I can inspect the array myself but it would be nice if numpy could just tell me what and where the problem is.