[Numpy-discussion] Astype and strings
Tue Oct 27 14:59:04 CDT 2009
On Oct 26, 2009, at 9:54 AM, Eli Bressert wrote:
> Hi Everyone,
> Is Numpy supposed to behave this like this when converting an array of
> numbers to an array of strings with astype?
In general you have to tell NumPy how big the string should be (i.e.
np.str is generic).
There are a few places where NumPy will look at the data you have in
order to guess a size, but as you've seen astype is not one of those
I think astype could be fixed (by putting a special-case check in the
current code for conversion to an unspecified-length string), but that
has not been implemented.
Please file a feature enhancement issue on the Trac so we don't lose
sight of this.
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