reset

set term postscript enhanced eps color size 8.6cm,6cm font "Helvetica,16pt" dashlength 2.0
set output 'autocorrelation.eps'
#set multiplot layout 2,1 rowsfirst title "" font "Helvetica, 28"

set ylabel 'Autocorrelation  |{/Times-Italic A(d)}|'

set xrange [-5:100]
set yrange [0.00001:1]

set xlabel 'Delay {/Times-Italic d}  (samples)'
set logscale y 10
set format y "10^{%L}"

#set label '2{/symbol \264}10^{-3}' at 70, 0.003 font "Helvetica, 22"
plot 'correlation_1M/auto_1M.txt' using 1:(sqrt($2**2)) w l lt 1 lw 2 lc rgb 'red' notitle, \
0.002  lt 2 lw 2 lc rgb 'black' notitle		
#plot 0.00196 lw 0.5 lc rgb 'orange' notitle, \
#'correlation_1M/plus.txt' using 1:2 w lp pt 7 ps 1 lc rgb 'red' title 'negative value', \
#'correlation_1M/minus.txt' using 1:(-$2) w lp pt 7 ps 1 lc rgb 'blue' title 'positive value'