[Numpy-discussion] Dict of lists to numpy recarray

Sean Davis seandavi@gmail....
Fri Aug 24 16:45:18 CDT 2007


On 8/24/07, Sean Davis <seandavi@gmail.com> wrote:
>
> I have a simple question (I assume), but I can't quite get a handle on the
> answer.  I have a dict with each member a list having a long (>5M
> elements).  I would like to convert that into a numpy recarray.  So far, my
> only thought is to loop over the length of the lists and convert to a list
> of tuples--this is SLOW.  What I really need to be able to do is to supply
> columns of data to create a recarray, but I haven't found an example of how
> to do that.


Sorry for the noise.  Found it.

newrecarray = numpy.rec.fromarrays
([x1,x2,x3],names='x1,x2,x3',formats='f8,i8,i8')

Sean
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