#! /usr/bin/env python3 # def president_heights_bar ( ): #*****************************************************************************80 # ## president_heights_bar() makes a bar plot of Presidential heights. # # Licensing: # # This code is distributed under the MIT license. # # Modified: # # 22 April 2019 # # Author: # # John Burkardt # import matplotlib import matplotlib.pyplot as plt import numpy as np import platform print ( '' ) print ( 'president_heights_bar():' ) print ( ' python version: ' + platform.python_version ( ) ) print ( ' numpy version: ' + np.version.version ) print ( ' matplotlib version: ' + matplotlib.__version__ ) print ( ' Create a bar plot of the height in inches of US presidents.' ) # # Read the values from the file. # filename = 'president_heights_data.txt' data = np.loadtxt ( filename ) height = data[:] n = len ( height ) index = np.arange ( n ) # # Create the bar plot. # plt.bar ( index, height ) plt.grid ( True ) plt.title ( 'US President Heights', fontsize = 16 ) plt.xlabel ( '<-- Index -->', fontsize = 16 ) plt.ylabel ( '<-- Height (inches) -->', fontsize = 16 ) filename = 'president_heights_bar.png' plt.savefig ( filename ) plt.show ( block = False ) plt.close ( ) print ( '' ) print ( ' Graphics saved as "' + filename + '"' ) # # Terminate. # print ( '' ) print ( 'president_heights_bar():' ) print ( ' Normal end of execution.' ) return def timestamp ( ): #*****************************************************************************80 # ## timestamp() prints the date as a timestamp. # # Licensing: # # This code is distributed under the MIT license. # # Modified: # # 06 April 2013 # # Author: # # John Burkardt # import time t = time.time ( ) print ( time.ctime ( t ) ) return if ( __name__ == '__main__' ): timestamp ( ) president_heights_bar ( ) timestamp ( )