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interpolation of 3d matrix in only one dimention

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Keren Grinberg
Keren Grinberg 2022-4-14
编辑： Matt J 2022-4-14
i have 4X49X49 matrix B, i want to use interpolate the first dimantion with spline interpolation to get 49X49X49 matrix.
from doing that:
A=interp(B,4,'spline')
X=A(:,1:16:end,:);
X2=X(:,:,1:16:end);
i got the matrix i want but the next thing that i want to do is to interpolate using 'linear' in Y direction so i want to learn how i can do different interpolations to different dimantions.
thanks

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回答（1 个）

Matt J
Matt J 2022-4-14
编辑：Matt J 2022-4-14
permute the array using permute() or shiftdim() so that the desired dimension becomes the first dimension.
C=interp(shiftdim(A,1),4,'linear');
C=shiftdim(C,-1);

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