[Numpy-discussion] indexes in an array where value is greater than 1?
Chris Withers
chris at simplistix.co.uk
Fri May 25 11:17:27 EDT 2012
Hi All,
I have an array:
arrrgh = numpy.zeros(100000000)
A sparse collection of elements will have values greater than zero:
arrrgh[9999] = 2
arrrgh[3453453] =42
The *wrong* way to do this is:
for i in xrange(len(arrrgh)):
if arrrgh[i] > 1:
print i
What's the right way?
Chris
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- http://www.simplistix.co.uk
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