# Author: Ika
# Date: 08/16/2014
# The support interval is [0,1]
# Note that Inkscape is needed to address the display problem of the Greek letters.

set term svg size 800,600 enhanced font 'Arial, 22'
set output 'beta_rect_cdf.svg'

set samples 500
set xrange [0:1.0]
set yrange [0.0:1.0]
set xtics 0.1
set ytics 0.2
set xzeroaxis lt -1 lc rgb "black" lw 1
set yzeroaxis lt -1 lc rgb "black" lw 1

# Draw the Beta rectangular distribution's cdf
set key left top

f(x,theta, a, b) = theta*ibeta(a,b,x)+x*(1-theta)

plot f(x, 0.1,1,1) t "t=0.2, a=1, b=1" lc rgb "red" lw 5,\
   f(x, 0.4,2,1) t "t=0.4, a=2, b=1" lc rgb "black" lw 5,\
   f(x, 0.4,1,2) t "t=0.4, a=1, b=2" lc rgb "blue" lw 5,\
   f(x, 0.5,2,2) t "t=0.5, a=2, b=2" lc rgb "green" lw 5

set term x11
set output

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