Hi everyone, how can i convert a 2500x21 matrix into 2500x42 matrix by using cubic/spline interpolation.

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Ayisha Nayyar
Ayisha Nayyar 2018-9-12
回答： KSSV 2018-9-12
Hi everyone, how can i convert a 2500x21 matrix into 2500x42 matrix by using cubic/spline interpolation.

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KSSV
KSSV 2018-9-12
A = rand(2500,21) ;
B = zeros(2500,42) ;
for i = 1:2500
B(i,:) = interp1(1:21,A(i,:),linspace(0,21,42),'spline') ;
end
This can be vectorised using bsxfun

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