[pymvpa] Question about NiftiDataset

[Scott]

yet another two cents:

ds = reduce(operator.add, [NiftiDataset(...) for something in 
somethingelse])
or even
ds = reduce(operator.add, map(createNiftiFcn, listOfInputArgs))


Yaroslav Halchenko wrote:
> I just want to complement Michael's response with a little bit more
> transparent workaround:
>
>       ds_ =  NiftiDataset(samples=abs_filename(betafile),
>              labels=label , chunks=chunk , mask=m)
>      if ds is None:  ds = ds_
> 	 else:           ds += ds_
>
> or even better if you loop only to read them in and all are 3D volumes:
> ds = NiftiDataset(samples=['file1.nii.gz', 'file2.nii.gz'],
> 	              labels=labels, ...)
>
>
>   
>> -- looping stuff ---
>>     
>
>   
>>     if ds is None:
>>         ds =  NiftiDataset(samples=abs_filename(betafile),
>>             labels=label , chunks=chunk , mask=m)
>>     else:
>>         ds +=  NiftiDataset(samples=abs_filename(betafile),
>>             labels=label , chunks=chunk , mask=m)
>>     
>
>
>   
>> Thanks for your advice.
>>     
>
>   
>> V-
>>     
>
>   
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>>     
>
>
>