I have a simple double bracket numpy array
import numpy as np
import pandas as pd
ar = np.array([[1,2,3,4]])
I am trying to convert it into a pandas series, but because of double brackets I am getting the below error.
pd.Series(ar)
....
Exception: Data must be 1-dimensional
how to achieve this in python
Using np.squeeze:
ar = np.array([[1,2,3,4]])
s = pd.Series(np.squeeze(ar))
s
Output:
0 1
1 2
2 3
3 4
dtype: int64
The easiest way to do it:
pd.Series(ar[0])
Output:
0 1
1 2
2 3
3 4
dtype: int64
Use numpy.ravel or numpy.flatten:
s = pd.Series(ar.ravel())
#alternetive
#s = pd.Series(ar.flatten())
print (s)
0 1
1 2
2 3
3 4
dtype: int32
