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# Spline Interpolation Code Error

### pxg882 (view profile)

on 25 Jan 2013

Does anybody know why this code isn't running?

x = -4:4;
y = [0 .15 1.12 2.36 2.36 1.46 .49 .06 0];
cs = spline(x,y);
xx = linspace(-4,4,101);
yy = ppval(cs,xx);
plot(x,y,'o',xx,yy,'-');


I can't figure it out! Thanks.

Matt J

### Matt J (view profile)

on 25 Jan 2013

Works fine for me.

pxg882

### pxg882 (view profile)

on 25 Jan 2013

Don't quite know what was going on there, yeah it does work fine. Sorry about that!

As an aside, I'm plotting the following but want the y-axis to start from 0. Is there a way to implement this into the code?

x = 1:-.01:0.90;
y = [13 17 17 18 18 25 25 24 24 26 46];
plot(fliplr(x),fliplr(y),'o');
set(gca,'XDir','reverse');
xlabel('n')
ylabel('\eta_{\infty}')

pxg882

on 25 Jan 2013

Figured it out.

No worries

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