[SciPy-dev] unique hanging?

Jonathan Taylor jonathan.taylor at stanford.edu
Tue Mar 14 13:59:36 CST 2006


hi all,

apologize if this is not the right list -- in the latest svn of numpy 
unique seems to be taking a long time with "nan"

reproducible error:

-------------------------------------------------------------------------------------------
import numpy as N
import numpy.random as R

x = R.standard_normal((100000,))
x = N.around(x * 100.) / 100.

print len(N.unique(x))

x[0] = N.nan
print len(N.unique(x))


x[0:50000] = N.nan
print 'OK'

print len(N.unique(x))


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