[Numpy-discussion] ValueError: objects are not aligned
RuiDC
ruidc@yahoo....
Wed Sep 8 04:42:51 CDT 2010
I'm getting this error, which must be a simple error in getting the result
from the cursor in the right shape, how do I get the cursor into the array
as a single dimension?:
import numpy as np
import sqlite3
conn = sqlite3.connect("simpledb")
cursor1 = conn.execute("select LogReturn from tblReturns limit 3")
rf1 = np.asarray(cursor1.fetchall(), dtype=np.float64)
print (rf1)
print (np.corrcoef([rf1, rf1]))
result:
[[-0.00641625]
[-0.00498411]
[-0.0038015 ]]
Traceback (most recent call last):
File "C:\Documents and Settings\rui\workspace\numpytest\src\numpytest.py",
line 38, in <module>
print (np.corrcoef([rf1, rf1]))
File "C:\Python26\lib\site-packages\numpy\lib\function_base.py", line
2003, in corrcoef
c = cov(x, y, rowvar, bias, ddof)
File "C:\Python26\lib\site-packages\numpy\lib\function_base.py", line
1953, in cov
return (dot(X, X.T.conj()) / fact).squeeze()
--
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