[Numpy-discussion] my derived ndarray class object loses its attribute after a transpose()

Sebastian Haase haase@msg.ucsf....
Fri Nov 23 02:25:37 CST 2007


Hi,
this question might habe been answered before:
I have my own ndarray-derived class. I did this, so that I can add
another "custom attribute" -- let's say
arr.filename
All works very except, except when I do
arr2 = arr.transpose()
my arr2 is still of the *type* of my derived class, however trying a
arr2.filename
now gives me an AtttributeError.

What am I doing wrong? How can this be fixed?
(I'm using numpy 1.0.1 - please let me know if this has been fixed since)

Thanks,
Sebastian Haase


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