he is not asking for slicing. he is asking for how to index array by element value but not element index.

2012/1/30 Zachary Pincus <zachary.pincus@yale.edu>
a[x,y,:]

Read the slicing part of the tutorial:
http://www.scipy.org/Tentative_NumPy_Tutorial
(section 1.6)

And the documentation:
http://docs.scipy.org/doc/numpy/reference/arrays.indexing.html



On Jan 30, 2012, at 10:25 AM, Ted To wrote:

> Hi,
>
> Is there some straightforward way to access an array by values across a
> subset of its dimensions?  For example, if I have a three dimensional
> array a=(x,y,z), can I look at the values of z given particular values
> for x and y?
>
> Thanks,
> Ted
> _______________________________________________
> NumPy-Discussion mailing list
> NumPy-Discussion@scipy.org
> http://mail.scipy.org/mailman/listinfo/numpy-discussion

_______________________________________________
NumPy-Discussion mailing list
NumPy-Discussion@scipy.org
http://mail.scipy.org/mailman/listinfo/numpy-discussion



--
***********************************************************************************
Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
************************************************************************************