[Numpy-discussion] Getting indices from numpy array with condition

Nicolas ROUX nicolas.roux@st....
Tue Nov 18 04:29:43 CST 2008


Hi,

Maybe this is not so clever, but I can't find it in the doc.
I need to get all indices/index of all occurrences of a value in a numpy
array


As example:

a = numpy.array([1,2,3],[4,5,6],[7,8,9])
I need to get the indice/index of all array elements where a[a>3]

Any fast/easy way to write this ?

Thanks for your help ;-)

Cheers,
Nicolas.



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