#! /usr/bin/env python3
#
def five_map ( ):

#*****************************************************************************80
#
## five_map() makes a scatter plot of traveling salesperson data.
#
#  Licensing:
#
#    This code is distributed under the MIT license.
#
#  Modified:
#
#    06 April 2025
#
#  Author:
#
#    John Burkardt
#
  import matplotlib
  import matplotlib.pyplot as plt
  import numpy as np
  import platform

  print ( '' )
  print ( 'five_map():' )
  print ( '  python version:     ' + platform.python_version ( ) )
  print ( '  numpy version:      ' + np.version.version )
  print ( '  matplotlib version: ' + matplotlib.__version__ )
  print ( '  Read a data file of (x,y) city coordinates.' )
  print ( '  Display the data as a scatter plot.' )
#
#  Read the times and plasma levels from the data file.
#
  filename = 'five_position.txt'
  data = np.loadtxt ( filename )
  city_num = data.shape[0]

  names = [ 'Aspen', 'Boston', 'Clayton', 'Dayton', 'Eaton' ]
#
#  Plot the cities.
#
  s = 200 * np.ones ( city_num )
  plt.scatter ( data[:,0], data[:,1], s )
#
#  Plot the names.
#
  for i in range ( 0, city_num ):
    plt.text ( data[i,0], data[i,1], '  ' + names[i], fontsize = 16 )
#
#  Plot the roads.
#
  for i in range ( 0, city_num ):
    for j in range ( i + 1, city_num ):
      plt.plot ( [ data[i,0], data[j,0] ], [ data[i,1], data[j,1] ] )

  plt.grid ( True )
  plt.xlabel ( '<--- X --->', fontsize = 16 )
  plt.ylabel ( '<--- Y --->', fontsize = 16 )
  plt.title ( 'Five cities for TSP', fontsize = 16 )
  plt.axis ( 'equal' )
  filename = 'five_map.png'
  plt.savefig ( filename )
  print ( '' )
  print ( '  Graphics saved as "' + filename + '"' )
  plt.close ( )
#
#  Terminate.
#
  print ( '' )
  print ( 'five_map():' )
  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 ( )
  five_map ( )
  timestamp ( )