Xi Demos:
Simple 2 dim. Plots | Velocity Fields | Surface |Trajektories

Simple 2 dim. Plots

- generating simple Plots -

Code for this example:

(  1)>set_seed(1234)
(  2)>r=randomn(10000);
(  3)>[h,x]=histogram(r,\binsize=0.2);
(  4)>plot(r,\xtitle="Event number",\ytitle="Signal");
(  5)>
(  6)>/* now shrink and move the plot with the mouse */
(  7)>
(  8)>h=h/double(total(h));
(  9)>plot(x,h,\hist,\xrange={-5,3},\yrange={0,0.1},\num=1);
( 10)>plot(\xtitle="Signal",\ytitle="Density");
( 11)>
( 12)>/* fit a gauss function to the histogram */
( 13)>
( 14)>p=fit([(x;a,mu,sigma)->y :y=a*exp(-0.5*pow((x-mu)/sigma,2));],{2,2,2},x,h);
Message: sum of squares convergence
( 15)>f=p[0]*exp(-0.5*pow((x-p[1])/p[2],2));
( 16)>plot(x,f,\curve,\linestyle={5,5});