Interpolation of matrices corresponding to time vector
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Ashok Das
le 25 Juin 2019
Commenté : KALYAN ACHARJYA
le 26 Juin 2019
I have a vector containing time points, and a cell structure containing matrices as its elements.
I want to interpolate the corresponding matrix for some time point which is not in the time vector. How to do that?
![Presentation1.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/226309/Presentation1.png)
4 commentaires
infinity
le 26 Juin 2019
Hello,
You could try to look at this
maybe it will help.
Bjorn Gustavsson
le 26 Juin 2019
Or, depending on sizes, it might be more efficient to interpolate all matrix components at the same time with interp3, or interpn. The different interpolation functions have slightly different options when it comes to interpolation methods.
HTH
Réponse acceptée
Andrei Bobrov
le 26 Juin 2019
Variant with interp1:
t = [1, 2, 3];
A = {[1, 1; 1, 1] ,[1, 0.9;0.95, .87] , [1.1, 0.85;0.91, .8]};
tt = [1.2, 2.1, 2.9];
out = interp1(t(:),permute(cat(3,A{:}),[3,2,1]),tt);
out = permute(out,3:-1:1);
2 commentaires
KALYAN ACHARJYA
le 26 Juin 2019
The answered is already provided by @Andrei, Hello @Ashok, please accept the answer to give due credit to the answer provider.
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Vismay Raj
le 26 Juin 2019
this function might be useful https://www.mathworks.com/help/matlab/ref/interpn.html
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