Interpolation of matrices corresponding to time vector
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Ashok Das
il 25 Giu 2019
Commentato: KALYAN ACHARJYA
il 26 Giu 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?
4 Commenti
infinity
il 26 Giu 2019
Hello,
You could try to look at this
maybe it will help.
Bjorn Gustavsson
il 26 Giu 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
Risposta accettata
Andrei Bobrov
il 26 Giu 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 Commenti
KALYAN ACHARJYA
il 26 Giu 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
il 26 Giu 2019
this function might be useful https://www.mathworks.com/help/matlab/ref/interpn.html
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