How can I plot interpolation line besides nodes?

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Ayob
Ayob 2013-6-15
I have a plot() order in my program and I want to have interpolation line on the graph besides specific nodes which are evaluated before. How can I do it?
I like to have spline interpolation.

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Ayob
Ayob 2013-6-15
>> t=spline(X,Y,h);
>> plot(X,Y,'*',h,t)

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