MATLAB: “Invalid interpolation method” after moving to MATLAB2020b

Question

This code was working well using MATLAB2018a:

z_t = interp1(time,x,y,'splines')

In MATLAB2020b, it is showing these error:

Error using interp1>sanitycheckmethod (line 285)

Invalid interpolation method.

Error in interp1>parseinputs (line 393)

method = sanitycheckmethod(last);

Error in interp1 (line 112)

parseinputs(X,V,penultimate,last,nargin,ndataarg,pp);

Answer 1

See method in the interp1 documentation (R2020b, however I doubt if it’s changed significantly since R2018b).