/Python/Converting numpy array to dataframe

Converting numpy array to dataframe

Dataframe from arrays python

import pandas as pd
df=pd.DataFrame({'col1':vect1,'col2':vect2})

Convert array to dataframe python

np.random.seed(123)
e = np.random.normal(size=10)  
dataframe=pd.DataFrame(e, columns=['a']) 
print (dataframe)
          a
0 -1.085631
1  0.997345
2  0.282978
3 -1.506295
4 -0.578600
5  1.651437
6 -2.426679
7 -0.428913
8  1.265936
9 -0.866740

e_dataframe=pd.DataFrame({'a':e}) 
print (e_dataframe)
          a
0 -1.085631
1  0.997345
2  0.282978
3 -1.506295
4 -0.578600
5  1.651437
6 -2.426679
7 -0.428913
8  1.265936
9 -0.866740

Source: stackoverflow.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)

Convert pandas dataframe to numpy dataframe

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

Converting numpy array to dataframe

import numpy as np
import pandas as pd

# Creating a 2 dimensional numpy array
>>> data = np.array([[5.8, 2.8], [6.0, 2.2]])
>>> print(data)
>>> data
array([[5.8, 2.8],
       [6. , 2.2]])

# Creating pandas dataframe from numpy array
>>> dataset = pd.DataFrame({'Column1': data[:, 0], 'Column2': data[:, 1]})
>>> print(dataset)
   Column1  Column2
0      5.8      2.8
1      6.0      2.2

Source: stackoverflow.com

Similar codes

2 votes345 views1 answer
Make new dataframe from slice
Python
0 vote317 views1 answer
How to loop through glob.iglob iterator
Python
66 votes341 views6 answers
Python delete folder and contents
Python
0 vote317 views1 answer
Find charechtar index in string python
Python
0 vote314 views1 answer
Rotate matrix 90 degrees clockwise in python
Python
2 votes311 views1 answer
Get text from image python
Python
0 vote334 views1 answer
Return an RDD with the values of each tuple
Python
0 vote376 views1 answer
Delete multiple dataframes at once in python
Python
1 vote331 views1 answer
Flask error f = open(f'{getcwd()}/haikus/{haiku}',"r") ^ SyntaxError: invalid syntax
Python
0 vote327 views2 answers
Messe graphen erstellen python
Python