How can I use interp1 to interpolate the last row of a matrix?
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I have the following 4 x 3 matrix:
A = [1,2,3;4,5,6;7,8,9;10,11,12]
I want to interpolate the rows of this matrix and get a 5 x 3 matrix to just get a single, last interpolated row. I am not sure how to use interp1 to this end. Can someone please help? Thank you!
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Accepted Answer
Voss
on 17 Dec 2022
Here's my guess at what you mean:
A = [1,2,3;4,5,6;7,8,9;10,11,12]
N = size(A,1);
A(N+1,:) = interp1(1:N,A,N+1,'linear','extrap')
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More Answers (1)
Bora Eryilmaz
on 17 Dec 2022
Edited: Bora Eryilmaz
on 17 Dec 2022
Interpolation is probably not the right term here since interpolation, typically, requires a set of (x,y) data and a different set of x values to use for finding interpolated y values.
A simple approach could be to use the column means of the A matrix to find the row of average values:
A = [1,2,3;4,5,6;7,8,9;10,11,12]
A(end+1,:) = mean(A)
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