Is it possible to create an 'average' matrix from inputs of matrices of varying sizes?
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The motivation for this question comes from one 3D matrix represents the coordinates of a cat walking through time.
Each matrix representing a cat takes on the form Matrix = [#points representing cat, x and y coordinate positions, #of frames]. The x and y coordinates comprising the cat is plotted succesively over each frame.
For example:
Cat 1(14, 2, 100)
Cat2(13, 2, 200)
Cat3(16, 2, 300)
My quesiton is whether there is a way to 'combine' all 3 cats so that I have one 'avg' cat? Maybe:
Cat_avg = (14, 2, 200) -> which is represented exclusively by the previous inputs?
Is such a thing possible? Would I have to augment smaller matricies w/ zeros or NaNs to do something like this? Apologies in advance if this is trivial; I have not yet taken linear algebra so am unsure if there is a simple way to do this, so am coming to this community for help. Thanks!
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yanqi liu
am 22 Nov. 2021
sir,may be use reshape to vector,but its order is confuse,such as
clc; clear all; close all;
Cat1 = 1*ones(14, 2, 100);
Cat2 = 2*ones(13, 2, 200);
Cat3 = 3*ones(16, 2, 300);
Cat_all = cat(1, Cat1(:), Cat2(:), Cat3(:));
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