#if(!exists("param")) param = log(0.3810364354550512)
if(!exists("param")) param = log(2.624420939708161)

print sprintf("param = %f", exp(param))
file = sprintf("< ./triangle_group %f", exp(param))

set zeroaxis
set size square
set xrange [0:20]
set yrange [0:20]
set grid
set parametric

plot file using 2:3 w p pt 7 ps 1 lc 1 t ""

pause mouse keypress
if(MOUSE_KEY == 60) param=param-0.02
if(MOUSE_KEY == 62) param=param+0.02
if(MOUSE_KEY == 13) param=0
if(MOUSE_KEY != 113) reread