Df to np array

Make pandas df from np array

numpy_data = np.array([[1, 2], [3, 4]])
df = pd.DataFrame(data=numpy_data, index=["row1", "row2"], columns=["column1", "column2"])
print(df)
>>>
  column1  column2
row1        1        2
row2        3        4

Source: kite.com

Numpy arrauy to df

numpy_data = np.array([[1, 2], [3, 4]])
df = pd.DataFrame(data=numpy_data, index=["row1", "row2"], columns=["column1", "column2"])
print(df)

Df to np array

df = pd.DataFrame({"A": [1, 2], "B": [3.0, 4.5]})
>>> df.to_numpy()
array([[1. , 3. ],
       [2. , 4.5]])

Source: pandas.pydata.org

Convert pandas dataframe to numpy dataframe

DataFrame.to_numpy(dtype=None, copy=False, na_value=<object object>)

Np array to df

import numpy as np
import pandas as pd

my_array = np.array([[11,22,33],[44,55,66]])

df = pd.DataFrame(my_array, columns = ['Column_A','Column_B','Column_C'])

print(df)
print(type(df))

Source: datatofish.com

List dataframe to numpy array

df.values

array([[nan, 0.2, nan],
       [nan, nan, 0.5],
       [nan, 0.2, 0.5],
       [0.1, 0.2, nan],
       [0.1, 0.2, 0.5],
       [0.1, nan, 0.5],
       [0.1, nan, nan]])

Source: stackoverflow.com

Similar codes

8 votes162 views5 answers
No module psycopg2
Python
0 vote161 views1 answer
Matplotlib savefig cutting off graph
Python
1 vote145 views1 answer
Rfind() in python
Python
1 vote192 views2 answers
No changes detected in app django
Python Django
0 vote146 views2 answers
Reverse column order pandas
Python
0 vote140 views1 answer
PANDAS BIGGER PLOTS
Python
0 vote157 views1 answer
Qt platform plugin could not be initialized stackoverflow
Python
4 votes203 views3 answers
Gyp ERR! find Python
Python
20 votes157 views1 answer
Python time a funciton
Python
5 votes148 views1 answer
Python allowed variable caracters
Python