[SciPy-user] Create n-dim array from axis

Paul Hilscher p.hilscher@lsw.uni-heidelberg...
Wed Mar 25 03:12:27 CDT 2009


> def create_array2(nodes):
>      # nodes is a list with lists of axis points (e.g. [[2, 3, 5, 10], 
> [0, 1], [100, 200, 500, 1000]]
>      shape = tuple([len(a) for a in nodes])
>      idx = numpy.indices(shape)
>      result = numpy.zeros(idx.shape, numpy.float)
>      for d in range(idx.shape[0]):
>          result[d] = numpy.take(nodes[d], idx[d])
>      return result.transpose()
> 
> create_array2([[0.0, 0.5, 1], [2.0, 2.5, 3]])
> 


Thanks a lot, it work perfectly fine for me.
If this feature is also useful for others, is there any chance to
have it included in numpy ? 

Paul




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