[ncl-talk] concatenating arrays in PynGL

[Alessandra Giannini]

hi, are you sure that you want to concatenate these two matrices?
According to the information you printed out, time intervals are 1979-2016 for one, and 2002-2018 for the other…
warm regards, alessandra



—
Alessandra Giannini
IRI for Climate and Society - The Earth Institute at Columbia University
P.O. Box 1000, Palisades NY 10964-8000
phone/fax: +1 845 680-4473/4864 - email: alesall at iri.columbia.edu




> On Jun 7, 2019, at 10:54 AM, Mahesh Kovilakam <mkmvarma at gmail.com> wrote:
> 
> Hi,
> I am now transitioning to python and I recently installed PynGL and now converting one NCL script to python. I would like to concatenate two arrays and in NCL it was easy using "array_append_record". For python, I used "np.concatenate(array1,array2,axis=0)" but it gives me this error:
> 
>   File "MERGE_netcdf_test.py", line 86, in <module>
>     merge_data = np.concatenate(ext_525_v11,ext_525_v2,axis=0)
> TypeError: 'NioVariable' object cannot be interpreted as an integer
> 
> I am not sure what that means. Here are the two variables I am trying to concatenate:
> 
> Variable: ext_525
> Type: float
> Total Size: 5253120 bytes
>             1313280 values
> Number of Dimensions: 4
> Dimensions and sizes:	[year | 38] x [month | 12] x [lat | 32] x [alt | 90]
> Coordinates: 
>             year: [1979..2016]
>             month: [1..12]
>             lat: [-77.5..77.5]
>             alt: [0.5..45]
> Number of Attributes: 2
>          _FillValue :	-999
>          mwv :	0.525
> 
> Variable: MERGED_EXT_525
> Type: float
> Total Size: 2350080 bytes
>             587520 values
> Number of Dimensions: 4
> Dimensions and sizes:	[year | 17] x [month | 12] x [lat | 32] x [alt | 90]
> Coordinates: 
>             year: [2002..2018]
>             month: [1..12]
>             lat: [-77.5..77.5]
>             alt: [0.5..45]
> Number of Attributes: 6
>          mwv :	0.525
>          description :	zonally averaged cloud cleared extinction at 525 nm
>          average_op_ncl :	dim_avg_n over dimension(s): profiles
>          long_name :	merged extinction from OSIRIS, CALIPSO, and SAGEIII-ISS at 525 nm
>          units :	1/km
>          _FillValue :	-999
> 
> 
> And my apologies of posting this question in NCL talk. I don't know if I could post this question to any other forum so posting it here. 
> 
> Thanks,
> Mahesh
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