

<<fig_cap="sin(x) function."; label="sin_fun"; fig_pos="ht">>=
using Gadfly
x = linspace(0, 2π, 200)
plot(x=x, y = sin(x), Geom.line)
@

<<echo=false; fig_cap="cos(x) function."; dpi=200>>=
plot(x=x, y = cos(x), Geom.line)
@

<<echo=false; label="cos2_fun">>=
plot(x=x, y = cos(2x), Geom.line)
@

<<term=true;fig_width=5>>=
x = linspace(0, 2π, 200)
plot(x=x, y = sin(x), Geom.line)
y = 20
plot(x=x, y = cos(x), Geom.line)
@

<<out_width="15cm">>=
x = linspace(0, 2π, 200)
plot(x=x, y = sin(x), Geom.line)
y = 20
plot(x=x, y = cos(x), Geom.line)
@