[Tutor] list to numpy record array

[Vincent Davis]

I must be missing something simple. I have a list of lists data = "[['  0',
'  0', '234.0', '24.0', ' 25'], ['  1', '  0', '22428.0', '2378.1', '
25'],......" and what to make a record array from it but it gets screwed up
or I don't get it, maybe both. Notice that at this stage the items are
strings, not numbers, and there is whitespace not sure this matters.
Here is what is happening
adata = numpy.array(data,numpy.float64)

>>> adata
array([[  0.00000000e+00,   0.00000000e+00,   2.34000000e+02,
          2.40000000e+01,   2.50000000e+01],
       ...,
       [  4.77000000e+02,   4.77000000e+02,   2.07000000e+02,
          4.58000000e+01,   2.50000000e+01]])

This is what I would expect except it is not a record array.

This is not what I expect. I think I have tried every iteration including
using numpy dtaypes numpy.int32 or bdata = numpy.array(data, dtype = [('x',
int),('y', int),('mean',float),('stdv',float),('npixcels',int)])
What am I missing?

bdata = numpy.array(data, [('x', int),('y',
int),('mean',float),('stdv',float),('npixcels',int)])
>>> bdata
array([[(3153952, 0, 0.0, 0.0, 0), (3153952, 0, 0.0, 0.0, 0),
        (206933603122, 0, 0.0, 0.0, 0), (808334386, 0, 0.0, 0.0, 0),
        (3486240, 0, 0.0, 0.0, 0)],
       [(3219488, 0, 0.0, 0.0, 0), (3153952, 0, 0.0, 0.0, 0),
        (13561617777439282, 0, 0.0, 0.0, 0),
        (54074581398322, 0, 0.0, 0.0, 0), (3486240, 0, 0.0, 0.0, 0)],
       [(3285024, 0, 0.0, 0.0, 0), (3153952, 0, 0.0, 0.0, 0),
        (206933931058, 0, 0.0, 0.0, 0), (925775666, 0, 0.0, 0.0, 0),
        (3486240, 0, 0.0, 0.0, 0)],
       ...,
       [(3487540, 0, 0.0, 0.0, 0), (3618612, 0, 0.0, 0.0, 0),
        (206933602866, 0, 0.0, 0.0, 0), (908996661, 0, 0.0, 0.0, 0),
        (3486240, 0, 0.0, 0.0, 0)],
       [(3553076, 0, 0.0, 0.0, 0), (3618612, 0, 0.0, 0.0, 0),
        (13561596370041137, 0, 0.0, 0.0, 0),
        (62870573495603, 0, 0.0, 0.0, 0), (3486240, 0, 0.0, 0.0, 0)],
       [(3618612, 0, 0.0, 0.0, 0), (3618612, 0, 0.0, 0.0, 0),
        (206933798962, 0, 0.0, 0.0, 0), (942552372, 0, 0.0, 0.0, 0),
        (3486240, 0, 0.0, 0.0, 0)]],

      dtype=[('x', '<i8'), ('y', '<i8'), ('mean', '<f8'), ('stdv', '<f8'),
('npixcels', '<i8')])


  *Vincent Davis
720-301-3003 *
vincent at vincentdavis.net
 my blog <http://vincentdavis.net> |
LinkedIn<http://www.linkedin.com/in/vincentdavis>
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