[Numpy-discussion] How to concatenate 2 recarrays into a single recarray

Isaac Gerg isaac.gerg at gergltd.com
Thu May 11 14:34:50 EDT 2017


Sure.

On Thu, May 11, 2017 at 2:31 PM, Eric Wieser <wieser.eric+numpy at gmail.com>
wrote:

> If that's the case, can you file an issue on github along with a minimal
> example that produces the error, and the full stack trace?
>
> On Thu, 11 May 2017 at 19:29 Isaac Gerg <isaac.gerg at gergltd.com> wrote:
>
>> newtable = np.lib.recfunctions.merge_arrays([a, b], asrecarray=True)
>>
>> yeilds:
>>
>> builtins.SystemError: ..\Objects\dictobject.c:2054: bad argument to
>> internal function
>>
>> On Thu, May 11, 2017 at 2:02 PM, Benjamin Root <ben.v.root at gmail.com>
>> wrote:
>>
>>> Check in numpy.recfunctions. I know there is merge_arrays() and
>>> stack_arrays(). I forget which one does what.
>>>
>>> Cheers!
>>> Ben Root
>>>
>>>
>>> On Thu, May 11, 2017 at 1:51 PM, Isaac Gerg <isaac.gerg at gergltd.com>
>>> wrote:
>>>
>>>> I'd prefer to stay in numpy land if possible.
>>>>
>>>> On Thu, May 11, 2017 at 1:17 PM, Isaac Xin Pei <isaacpei at gmail.com>
>>>> wrote:
>>>>
>>>>> Check Pandas pd.concate ?
>>>>> On Thu, May 11, 2017 at 12:45 PM Isaac Gerg <isaac.gerg at gergltd.com>
>>>>> wrote:
>>>>>
>>>>>> I have 2 arrays, a and b which are rec arrays of length 10.  Each
>>>>>> array has 5 columns.
>>>>>>
>>>>>> I would like to combine all the columns into a single recarray with
>>>>>> 10 columns and length 10.
>>>>>>
>>>>>> Thanks,
>>>>>> Isaac
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>>>>>>
>>>>>
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>>>>
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