[SciPy-user] problem with kmeans
Rich Drewes
drewes at interstice.com
Sat Feb 12 20:13:39 EST 2005
Hello,
I was trying to use a simple kmeans test program provided in the docstring
for vq.kmeans and I got this error:
Traceback (most recent call last):
File "kmeanstest.py", line 54, in ?
kmeans(whitened,codes)
File "/usr/lib/python2.3/site-packages/scipy/cluster/vq.py", line 304,
in kmeans
guess = take(obs,randint(0,No,k),0)
ValueError: invalid input sequence
Thinking this looked like an error that I found in the scipy genetic
algorithm module (which I reported to this list a few weeks ago), I tried
changing line 304 from:
guess = take(obs,randint(0,No,k),0)
to:
guess = take(obs,randint.rvs(0,No,k),0)
Now it seems to work, but I am worried. Can anyone suggest what is going
on here? Is this a bug arising from a change in how random numbers are
handled or am I doing something dumb? I am very new to scipy and not a
stats expert.
SciPy 0.3.2, Python 2.3.
Thank you for SciPy!
Rich
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