How to interpolate a 1D array to a larger size?

I have a 1by79 array and want to interpolate to a 1by84 array. Is there a way to do this? I checked interp1 (<http://www.mathworks.com/help/matlab/ref/interp1.html>) but don't know how to use this function in my case. Or other ways to achieve my goal? Thank you.

Answer 1

[Chad Greene]

t = linspace(1,10,79); 
x = sin(t); 
ti = linspace(1,10,84); 
xi = interp1(t,x,ti);

plot(t,x,'r.',ti,xi,'b.')

[Rajveer Singh]

What if I wanted to interpolate in a smaller vector size, say 1by50?

Thanks in advance