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

Eric Wieser wieser.eric+numpy at gmail.com
Thu May 11 14:31:19 EDT 2017


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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