[AstroPy] slicing

[Paul Kuin]

I had this problem and ended up converting the indices to integers by
rounding to the nearest (and making sure there we no NaNs ).

On Thu, Feb 11, 2016 at 11:39 AM, Aldcroft, Thomas <
aldcroft at head.cfa.harvard.edu> wrote:

>
>
> On Thu, Feb 11, 2016 at 5:42 AM, Stefano Covino <
> stefano.covino at brera.inaf.it> wrote:
>
>> Dear friends,
>>
>> let’s assume we have a data array read from a FITS file:
>>
>> data = getdata(‘file.fits’)
>>
>> I need to do some computations on a subset of it, for instance:
>>
>> datf = dat[bb-size:bb+size,aa-size:aa+size]
>>
>> where aa and bb are x,y positions and size a fixed number (e.g. 10).
>>
>>
>>
>> So, the question. Is it possible that aa and bb are not simple integers
>> but lists or arrays of integers?
>>
>
> Hi Stefano,
>
> You can get a good idea of what is possible with array indexing by
> starting with the numpy documentation:
>
>   http://docs.scipy.org/doc/numpy-1.10.1/user/basics.indexing.html
>
> - Tom
>
>
>>
>>
>> Thanks,
>>         Stefano
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>>
>
>
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>


-- 

* * * * * * * * http://www.mssl.ucl.ac.uk/~npmk/ * * * *
Dr. N.P.M. Kuin      (n.kuin at ucl.ac.uk)
phone +44-(0)1483 (prefix) -204211 (work)
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