2007/10/31, Christopher Clarke <cclarke@chrisdev.com>:

Hi
What's the most efficient way of casting an object array to a double
ndarray?
other than
numpy.array(obj_arr.tolist(),dtype='d')

The  original data is a list of tuples form a SQL query which could
potentially contain None
Indeed a masked array would be more ideal  where None is replaced  by
the mask
I'm currently using list comprehension to replace the None in the
original data with the mask
  But i wish to eliminate this step if possible
Regards
Chris

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