[Numpy-discussion] convert dictionary of arrays into single array

John Salvatier jsalvati@u.washington....
Wed Mar 16 08:56:18 CDT 2011


Loop through to build a list of arrays, then use vstack on the list.

On Wed, Mar 16, 2011 at 1:36 AM, John <washakie@gmail.com> wrote:

> Hello,
>
> I have a dictionary with structured arrays, keyed by integers 0...n.
> There are no other keys in the dictionary.
>
> What is the most efficient way to convert the dictionary of arrays to
> a single array?
>
> All the arrays have the same 'headings' and width, but different lengths.
>
> Is there something I can do that would be more efficient than looping
> through and using np.concatenate (vstack)?
> --john
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