Type checking of arrays containing strings
Hi
I need to check if my array (a) is of type `string`. That is, I dont know the number of characters beforehand, so I cant do a.dtype == '|S*' (* = (max) number of characters) Looking at my options, I see either a.dtype.kind == 'S' or a.dtype.type == np.string_, might be ok. Are these any of the preffered ways, or is there some other way?
Thanks,
Arnar
2008/7/18 Arnar Flatberg arnar.flatberg@gmail.com:
I need to check if my array (a) is of type `string`. That is, I dont know the number of characters beforehand, so I cant do a.dtype == '|S*' (* = (max) number of characters) Looking at my options, I see either a.dtype.kind == 'S' or a.dtype.type == np.string_, might be ok. Are these any of the preffered ways, or is there some other way?
Maybe
np.issubdtype(x.dtype, str)
Stéfan
On Fri, Jul 18, 2008 at 11:40 AM, Stéfan van der Walt stefan@sun.ac.za wrote:
2008/7/18 Arnar Flatberg arnar.flatberg@gmail.com:
I need to check if my array (a) is of type `string`. That is, I dont know the number of characters beforehand, so I cant do a.dtype == '|S*' (* = (max) number of characters) Looking at my options, I see either a.dtype.kind == 'S' or a.dtype.type
==
np.string_, might be ok. Are these any of the preffered ways, or is there some other way?
Maybe
np.issubdtype(x.dtype, str)
Yes, silly of me. I didnt look at the documentation (source) and tried np.issubdtype(x, str) as my first try. That not working, I got lost. That said, I think some other parameter names than arg1, arg2 would be nice for an undocumented function .
Arnar
On Fri, Jul 18, 2008 at 12:38 PM, Arnar Flatberg arnar.flatberg@gmail.com wrote:
On Fri, Jul 18, 2008 at 11:40 AM, Stéfan van der Walt stefan@sun.ac.za wrote:
2008/7/18 Arnar Flatberg arnar.flatberg@gmail.com:
I need to check if my array (a) is of type `string`. That is, I dont
know
the number of characters beforehand, so I cant do a.dtype == '|S*' (* = (max) number of characters) Looking at my options, I see either a.dtype.kind == 'S' or a.dtype.type
==
np.string_, might be ok. Are these any of the preffered ways, or is
there
some other way?
Maybe
np.issubdtype(x.dtype, str)
Yes, silly of me. I didnt look at the documentation (source) and tried np.issubdtype(x, str) as my first try. That not working, I got lost. That said, I think some other parameter names than arg1, arg2 would be nice for an undocumented function .
Arnar
... and instead of just complaining, I can do something about it :-) Could
you add permissions to me for the documentation editor, username: ArnarFlatberg.
Thanks,
Arnar
2008/7/18 Arnar Flatberg arnar.flatberg@gmail.com:
... and instead of just complaining, I can do something about it :-) Could you add permissions to me for the documentation editor, username:
That's the spirit! You are now added.
But I'm worried: I had a bet with Joe that we won't get more than 30 people to sign up. Looks like I might have to concede defeat!
Cheers Stéfan
participants (2)
-
Arnar Flatberg -
Stéfan van der Walt