# Author: Ika
# Date: 08/16/2014
# The original PNG is offered by Erkcan.
set term svg size 800,600 enhanced font 'Arial, 24'
set output 'landau_pdf.svg'
set samples 500
set xrange [-4:15]
set yrange [0:0.26]
set xtics 2
set ytics 0.02
set xzeroaxis lt -1 lc rgb "black" lw 1
# Draw the hyperbolic secant distribution's pdf
unset key
plot 1/((2*pi)**0.5)*exp(-0.5*(x+exp(-x))) lc rgb "blue" lw 5
set term x11
set output