Dec 14, 2013 · A(:,:)=interp1(B,A,B(:,1),'cubic'); When I run this code a warning is issued due to the data not being evenly spaced. Also this code is quite slow. This code is quite slow for the job. I want to …

Feb 15, 2016 · From the documentation of Matlab's interp1, it seems that the method used for interpolation and extrapolation should be the same. However, I would like to implement a linear …

Nov 25, 2022 · "extrapolate" using interp1 is, as the documentation says, a fill-value, i.e. constant, as you see. Using interp1 there's no way you can get anything other than constant-value extrapolation. …

Dec 11, 2021 · Apparently interp1 works properly only if u is monotonic: I've checked this with Octave, which is equivalent to Matlab. From below example one can see that answer is ~37.32 for monotonic …

Nov 13, 2013 · Scipy interp1d and matlab interp1 Asked 12 years, 2 months ago Modified 12 years, 2 months ago Viewed 23k times

Apr 17, 2015 · test = [-1 -2 0 3]; new = interp1(test,1:.5:numel(test)); which will give an interpolated series, where the new series now includes one additional interpolated point between each of the …

Oct 21, 2012 · The solution is to make up a coordinate vector that gives the positions of the measurements given by the user and then use interp1. For example, suppose you have three …

Aug 29, 2017 · You can apply interp1 to a matrix, in which case it will operate along each column. Since you want to interpolate along each row, you will have to transpose your inputs and your outputs.

Jan 10, 2016 · a1 = interp1(tStep,alpha,t) My issue is that at each interpolation interp1 uses a value of calculate_a1. This means that whilst I want to change a1 after every 25 time points, it changes after …

Matlab used to have a clearer documentation for interp1. You can have a look at my answer in this question for an explanation of what interp1 is doing (there is also a graphical explanation in the answer).