[Numpy-discussion] recarray field names
oliphant at ee.byu.edu
Mon Jul 10 18:09:48 CDT 2006
John Parejko wrote:
>Howdy! I just wanted to voice my agreement with this statment by Erin Sheldon:
> > I brought up the issue a while back of having a simple way to
> > access the field names of an array. The quick summary: accessing
> > field names has some oddness that needs cleaning up.
>Sometimes a['name'], sometimes a.field('name'). I vastly prefer the first
>version; it has become my favored way of dealing with my FITS and ASCII
>data. But using the bracket notation sometimes gives an error, and I
>haven't quite figured out what the circumstances are.
Bracketed version should never give an error. If you see it, it's a bug.
>Also, "for name in a.dtype.fields:" or "for name in a.fields:" would be
>very, very handy.
You can do this, now but each key in the fields dictionary might not be
unique because titles will also be keys in the dictionary.
A unique list of ordered names can now (in NumPy SVN) be obtained using
for name in a.dtype.names
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