MATLAB: How to interpolate a 1D array to a larger size

array sizeinterpolationMATLAB

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.

Best Answer

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.')
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