get pairs of features python code example

Example 1: how to make a pairs plot with pandas

import pandas as pd
import matplotlib.pyplot as plt
%matplotlib inline

from sklearn import datasets

iris_dataset = datasets.load_iris()
X = iris_dataset.data
Y = iris_dataset.target

iris_dataframe = pd.DataFrame(X, columns=iris_dataset.feature_names)

# Create a scatter matrix from the dataframe, color by y_train
grr = pd.plotting.scatter_matrix(iris_dataframe, c=Y, figsize=(15, 15), marker='o',
                                 hist_kwds={'bins': 20}, s=60, alpha=.8)

Example 2: find highest correlation pairs pandas

import pandas as pd
import numpy as np

shape = (50, 4460)

data = np.random.normal(size=shape)

data[:, 1000] += data[:, 2000]

df = pd.DataFrame(data)

c = df.corr().abs()

s = c.unstack()
so = s.sort_values(kind="quicksort")

print so[-4470:-4460]