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#include <stdio.h>
#include <chplot.h>
#include <numeric.h>
#define N 4 /* data x and y array size */
#define N2 2*N-1
int main() {
int i,n1[N],n2[N2];
array double c[N2], x[N]={1,2,3,4}, y[N]={3,2,0,1};
class CPlot plot;
linspace(n1,0,N-1);
linspace(n2,0,N2-1);
correlation(c,x,y);
printf("x=%6.3f\n",x);
printf("y=%6.3f\n",y);
printf("c=%6.3f\n",c);
plot.Data2D(n1,x);
plot.PlotType(PLOT_PLOTTYPE_IMPULSES, 0);
plot.AxisRange(PLOT_AXIS_X, 0,7,1);
plot.AxisRange(PLOT_AXIS_Y, 0,17,1);
plot.Label(PLOT_AXIS_X,"n");
plot.Label(PLOT_AXIS_Y,"x[n]");
plot.Title("x[n] sequence");
plot.Plotting();
plot.DeletePlots();
plot.Data2D(n1,y);
plot.PlotType(PLOT_PLOTTYPE_IMPULSES, 0);
plot.AxisRange(PLOT_AXIS_X, 0,7,1);
plot.AxisRange(PLOT_AXIS_Y, 0,17,1);
plot.Label(PLOT_AXIS_X,"n");
plot.Label(PLOT_AXIS_Y,"y[n]");
plot.Title("y[n] sequence");
plot.Plotting();
plot.DeletePlots();
plot.Data2D(n2,c);
plot.PlotType(PLOT_PLOTTYPE_IMPULSES, 0);
plot.AxisRange(PLOT_AXIS_X, 0,7,1);
plot.AxisRange(PLOT_AXIS_Y, 0,17,1);
plot.Label(PLOT_AXIS_X,"n");
plot.Label(PLOT_AXIS_Y,"x[n]");
plot.Title("Output sequence");
plot.Plotting();
}
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x= 1.000 2.000 3.000 4.000
y= 3.000 2.000 0.000 1.000
c= 4.000 0.000 0.000 0.000 3.000 4.000 0.000
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