MATLAB: Comparison of vectors and reducing size

MATLABvector size;vectors

Greetings,

I have three vectors A , B and C of sizes 299×1 , 499×1 and 1609×1 respectively. i need code to simply reduce the size of the two large vectors (in this case B and C) to the size of the smallest vector (in this case A). how do i do that?

Best Answer

If you want to just keep the first 299 elements:

sz = min([length(A),length(B),length(C)]);
A = A(1:sz);
B = B(1:sz);
C = C(1:sz);

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MATLAB: How to use interp1 to stretch out smaller vector to the size of larger vector

Assuming that you intend to create a vector of averages, do this:

Ahat = interp1(1:1260,A,linspace(1,1260,1778));
C = (Ahat + B)/2;

MATLAB: How to concatenate string vectors of unequal length

Try this:

% Define component cell arrays.
v1 = {'a'; 'b'; 'c'}
v2 = {'d'}
v3 = {'e'; 'f'}
% Find out how  big cell array needs to be.
lv1 = length(v1);
lv2 = length(v2);
lv3 = length(v3);
rows = max([lv1,lv2,lv3])
% Instatiate cell array of the max size.
v4 = cell(rows, 3)
% stuff each column in.
v4(1:lv1, 1) = v1;
v4(1:lv2, 2) = v2;
v4(1:lv3, 3) = v3;
% Print out results
fprintf('\n\nHere is the output cell array:\n');
v4

In the command window:

Here is the output cell array:

v4 = 
    'a'    'd'    'e'
    'b'     []    'f'
    'c'     []     []

Best Answer

Related Solutions

MATLAB: How to use interp1 to stretch out smaller vector to the size of larger vector

MATLAB: How to concatenate string vectors of unequal length

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