Ocatve examples

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An NPV example in Octave

pkg load financial
r=.03/12;
p=(1:60)*1000;
npv(r,p)

Hello world! Hello world!

Histogram

A data smoothing example in Octave

pkg load data-smoothing
npts = 20;
 x = rand(npts,1)*2*pi;
 y = sin(x);
 y = y + 1e-1*randn(npts,1);
 xh = linspace(0,2*pi,200)';
 [yh, lambda] = regdatasmooth (x, y, "d", 3, "xhat", xh);
 lambda
 plot(x,y,'o','markersize',10,xh,yh,xh,sin(xh))
 title("y(x)")
 legend("noisy","smoothed","sin(x)","location","northeast");

        hello world

A linear algebra example in Octave

A=randn(3,5);
[u,s,v]=svd(A)