Hello Jake,
The error is easy to reproduce, after downloading the data for the file
sdss_photoz via the fetch_data script:
data=np.load('./sklearn_tutorial/doc/data/sdss_photoz/sdss_photoz.npy')
print data.dtype.names
#########################################################
count=0
N=len(data)
X=np.zeros((N,4))
for i in range(N):
X[i,0]= data['u'][i]-data['g'][i]
if np.isnan(X[i,0]):
print data['u'][i],data['g'][i]
raw_input()
Is just a messy script to loop over each input in the data file and stop if
you have a NaN, but you'll see there are many NaN along the way. I haven't
tried using the sql script, perhaps I'll do it later that I have some more
time. The data with the redshifts also has several NaN along the way.
Note: I downloaded the data several times at 7:00 pm Japan Standard Time,
and again this noon at 12:30 JST
Thanks
Leon
On Fri, Nov 16, 2012 at 2:26 AM, Jake Vanderplas <
[email protected]> wrote:
> Hi Leon,
> I haven't run into any NaN issues, or heard of anyone else having that
> problem. Can you send the traceback for the specific error you're
> getting? Thanks
> Jake
>
>
> On 11/15/2012 04:14 AM, Jaques Grobler wrote:
>
> Hi Leon -
>
> I hadn't encountered this back when I looked at this.
> I think @JacobVanderPlas would perhaps be best with this since he put that
> tutorial together.
>
> I'm sure he'll be able to help with this.
>
> ping @jakevp :)
>
> Regards, J
>
>
>
> 2012/11/15 Leon Palafox <[email protected]>
>
>>
>> Hey Guys,
>>
>> I was running the data set in the Tree Regression Example for the
>> astroml (
>> http://astroml.github.com/sklearn_tutorial/regression.html#a-simple-method-decision-tree-regression
>> )
>>
>> And I bumped with some NaN that come from the dataset.
>>
>> Has anyone else encountered this issue, and if so, how did you solved
>> it, I think it is important to solve it, since it renders those
>> examples unusable.
>>
>> Best
>>
>> --
>> Leon Palafox, M.Sc
>> PhD Candidate
>> Iba Laboratory
>> +81-3-5841-8436
>> University of Tokyo
>> Tokyo, Japan.
>>
>>
>>
>>
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>>
>
>
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--
Leon Palafox, M.Sc
PhD Candidate
Iba Laboratory
+81-3-5841-8436
University of Tokyo
Tokyo, Japan.
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