//Scilab Code for Example 10.1 of Signals and systems by
//P.Ramakrishna Rao
//Cross Correlation
clear;
clc;
x=[2,-1,1,0,2];
y=[0,1,0,-1,2];
//computation of cross correlation sequence;
n1 = max(size(y))-1;
n2 = max(size(x))-1;
r = xcorr(x,y,n1);
n=-4:4;
a=gca();
a.x_location="origin";
a.y_location="origin";
plot2d3(n,r,-9);
title('Cross-Correlation seguence output');