On Thu, Oct 19, 2006 at 09:45:02AM -0600, Travis Oliphant wrote:
> Stefan van der Walt wrote:
>
> >If I understand correctly, the following should work:
> >
> >import numpy as N
> >
> >class InfoArray(N.ndarray):
> > def __new__(info_arr_cls,arr,info={}):
> > info_arr_cls.info = info
> > return N.array(arr).view(info_arr_cls)
One has to be careful of this approach. It ads *the same* information
to all arrays, i.e.
In [2]: a = ImageInfo(N.array([1,2,3]),{1:1})
In [3]: b = ImageInfo(N.array([1,2,3]),{1:2})
In [4]: a
Out[4]: ImageInfo([1, 2, 3])
In [5]: b
Out[5]: ImageInfo([1, 2, 3])
In [6]: a.info
Out[6]: {1: 2}
In [7]: b.info
Out[7]: {1: 2}
Regards
Stéfan
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