[Pytables-users] Re: pytables

[Francesc A. <fa...@ca...>]

Hi Elias, 
 
Quoting eli...@gu...: 
> Is it possible to read a "hyperslab" from a multidimensional EArray? 
> How would I do this with pytables. 
>  
> For my 1D EArrays I do something like: 
>  
> >>> offsets = h5file.getNode("/OEF1", "offsets") 
> >>> offsetSlice = offsets.read(start=17568, stop=17570) 
>  
> which works fine. 
 
For bidimensional slices, just use the extended slicing: 
 
offsets[17568:17570,23:25] 
 
or, for general multidimensional slices: 
 
offsets[17568:17570,23:25,...,2,34:100:3] 
 
In general, you can use any extended slice idiom listed in: 
http://www.python.org/doc/2.3.4/whatsnew/section-slices.html 
 
except using negative steps. 
 
 
--  
Francesc Altet