What code to automatically put the cubic splines in a plot?

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Dominic
Dominic 2013-3-27
Say you have:
x = -10:2:10 y = sin(x)
plot(x,y,'o')
Instead of having to click the Figure Tools then clicking the cubic splines,
is there a code that will automatically activate that?
Also, how would you fill with a colour the area between the splines and the x-axis?
Cheers

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回答（1 个）

Paul Premakumar
Paul Premakumar 2013-3-27
Why not use the SPLINE command
plot(x,y)
figure
xx = -10:.25:10;
yy = spline(x,y,xx);
%plot(xx,yy); % display your data
% Use area to fill the are under the curve
area(xx,yy);

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