#*****************************************************************************80
#
## track_bar bar plots and labels some eye tracking data.
#
#  Licensing:
#
#    This code is distributed under the MIT license. 
#
#  Modified:
#
#    27 August 2020
#
#  Author:
#
#    John Burkardt
#
cat ( date ( ), "\n" )
cat ( "\n" )
cat ( "track_bar\n" )
cat ( " ", version$version.string, "\n" )
cat ( "  Read a text file containing durations" )
cat ( "  representing results of an eye-tracking experiment.." )
cat ( "  Make a bar plot of the results, with labeled bars.." )

filename = "track_data.txt"
duration <- read.table ( filename, header = FALSE )

filename = "track_bar.png"
png ( filename )
barplot ( duration[,1],
  col = 'red',
  xlab = "Eye Region", 
  ylab = "Duration (msec)",
  main = "Fixation Duration to Eye Region",
  ylim = c ( 0, 2100 ),
  names.arg = c (
    "anger",
    "disgust",
    "fear",
    "happy",
    "sad",
    "surprise" ) )
grid ( )
cat ( '  Graphics saved as "', filename, '"\n' )
#
#  Terminate.
#
cat ( "\n" )
cat ( "track_bar:\n" )
cat ( "  Normal end of execution.\n" )

quit ( )