[Numpy-discussion] Datarray BoF, part2
Wed Jul 21 12:50:30 CDT 2010
On Wed, Jul 21, 2010 at 10:41 AM, Bruce Southey <firstname.lastname@example.org> wrote:
> The current implemented option of allowing strings is the only practical
> option and I think that most other related languages also impose this
> constraint. Otherwise we will effectively break compatibility with Python
> and numpy because darr can result in different answers depending on the
> type of object involved - especially if you are using views and forget the
> actual object type.
There are axis labels (currently string only) and there are tick
labels (currently anything but int).
darr will always return the first element of the datarray. No
indexing by tick label is allowed. To index by tick label you'd have
to use a special method like darr.lix[...]. Would that be OK?
> I do think that we do have to avoid adding complexity that increases runtime
> like looking for the label 2 when it should be the second axis. Also we have
> to avoid situations that lead to input errors like flag values or extra
It's nice to make thing general by allowing any hashable object to
label an axis. But I agree with you that we have to watch the cost of
Nothing was decided as final at the metting. We only discussed options.
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