MATLAB: Extrapolation of the last observation of a vector

extrapolation

 Dear all,
I  have
A={
 0.2560
    0.2680
    0.0504
   14.0985
    0.1128
2.5852
    0.3220
   14.0985
    2.5852
    0.2938
    0.2560
    0.2680
    0.0504
   14.0985
    0.1128
   2.5852
    0.3220
   14.0985
    2.5852
    0.2938
    0.2560
    0.2680
    0.0504
   14.0985
    0.1128
  2.5852
    0.3220
   14.0985
    2.5852
    NaN};
I want to replace the last value via extrapolation.
I tried
 inpaint_nans(cell2mat(A),2) but I got:
 Subscript indices must either be real positive integers or
logicals.
 Error in inpaint_nans (line 239)
    fda(nm,[nm,nm-1,nm-n])=[-2 1 1];
Is there any other way to replace NaN via extrapolation
thanks

Best Answer

% -----in this exemple i used a linear extrapolation ------
n=length(A);y=cell2mat(A');
x=1:n-1;xi=1:n;
yi=interp1(x,y(1:n-1),xi,'linear','extrap')
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