[Numpy-discussion] BOF notes: Fernando's proposal: NumPy ndarray with named axes
Mon Jul 12 17:30:41 CDT 2010
rec['305'] extracts a single value from a single record.
arr.named[:,305] extracts an *entire column* from a 2-D datarray,
returning you a 1-D datarray.
Once again, 1-D record arrays and 2-D labeled arrays look similar when
you print them, but the data structures are so unrelated that there is
really not much point in comparing them any further.
On Mon, Jul 12, 2010 at 6:01 PM, Neil Crighton <email@example.com> wrote:
> Rob Speer <rspeer <at> MIT.EDU> writes:
>> It's not just about the rows: a 2-D datarray can also index by
>> columns, an operation that has no equivalent in a 1-D array of records
>> like your example.
> rec['305'] effectively indexes by column. This is one the main attractions of
> structured/record arrays.
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