Adding a field to a structured numpy array

Question

What is the cleanest way to add a field to a structured numpy array? Can it be done destructively, or is it necessary to create a new array and copy over the existing field

Answer 1

If you're using numpy 1.3, there's also numpy.lib.recfunctions.append_fields().

For many installations, you'll need to import numpy.lib.recfunctions to access this. import numpy will not allow one to see the numpy.lib.recfunctions