[Numpy-discussion] record array question
Russell E. Owen
rowen at uw.edu
Wed Jul 15 14:26:57 EDT 2009
In article <rowen-1FF89A.11051515072009 at news.gmane.org>,
"Russell E. Owen" <rowen at uw.edu> wrote:
> Is it straightforward to generate a record array (preferably a standard
> numpy.ndarray, not the numpy.rec variant) where some named fields
> contain pairs of numbers, for example:
>
> named field pos contains pairs of floats
> named field rot contains floats
>
> Any pointers to relevant documentation would be appreciated. I found a
> basic intro to record arrays on the scipy web site (which was quite
> useful for generating simple record arrays), and the numpy book has a
> bit of info, but I've not found anything very comprehensive.
>
> -- Russell
Never mind. I found it today based on a posting; the kind of array I was
interested in is a "structured array" and using that term the docs are
easy to find, e.g.:
<http://docs.scipy.org/doc/numpy/user/basics.rec.html>
In particular:
numpy.zeros(shape, dtype=[("pos", float, (2,)), ("rot", float)])
-- Russell
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