python heatmap code example

Example 1: print the heat map python

import numpy as np
import seaborn as sns
import matplotlib.pylab as plt

uniform_data = np.random.rand(10, 12)
ax = sns.heatmap(uniform_data, linewidth=0.5)
plt.show()

Example 2: python add labels to seaborn heatmap

# Basic syntax:
sns.heatmap(df, xticklabels=x_labels, yticklabels=y_labels)

# Example usage:
import seaborn as sns
flight = sns.load_dataset('flights') 	# Load flights datset from GitHub
										# seaborn repository

# Reshape flights dataeset to create seaborn heatmap
flights_df = flight.pivot('month', 'year', 'passengers') 

x_labels = [1,2,3,4,5,6,7,8,9,10,11,12] # Labels for x-axis
y_labels = [11,22,33,44,55,66,77,88,99,101,111,121] # Labels for y-axis

# Create seaborn heatmap with required labels
sns.heatmap(flights_df, xticklabels=x_labels, yticklabels=y_labels)

Example 3: matplotlib heatmap

# Program to plot 2-D Heat map
# using matplotlib.pyplot.imshow() method
import numpy as np
import matplotlib.pyplot as plt
  
data = np.random.random(( 12 , 12 ))
plt.imshow( data , cmap = 'autumn' , interpolation = 'nearest' )
  
plt.title( "2-D Heat Map" )
plt.show()

Example 4: python plot heatmap by city

#plotting the map of the shape file preview of the maps without data in itmap_df.plot()