[Numpy-discussion] Adding the ability to "clone" a few fields from a data-type
Travis E. Oliphant
Wed Oct 29 19:05:50 CDT 2008
I'd like to add to NumPy the ability to clone a data-type object so that
only a view fields are copied over but that it retains the same total size.
This would allow, for example, the ability to "select out a few records"
from a structured array using
subarr = arr.view(cloned_dtype)
Right now, it is hard to do this because you have to at least add a
"dummy" field at the end. A simple method on the dtype class
(fromfields or something) would be easy to add.
It was thought in the past to do this with indexing
And that would still be possible (and mostly implemented) if this
feature is added.
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