how to resize a given signal?

how to resize a given signal? My input signals are y2=[ 1 9385];yh=[1 37508]; I need to find y2+y5.

[Azzi Abdelmalek]

What is y5?

[Walter Roberson]

Do the signals occupy exactly the same time duration ?

Answer 1

[Image Analyst]

You'll probably want to use either interp1() or imresize(). Both are illustrated in the demo below:

clc;
clearvars;
y2 = rand(1, 9385);
y5 = rand(1, 37508);

% The easiest method, using imresize().
% Make y2 the same size as y5
y2Larger = imresize(y2, size(y5));
% Now sum them
output = y2Larger + y5;

% Alternative method using interp1
x = linspace(1, length(y5), length(y2));
xi = 1:length(y5);
y2Larger  = interp1(x, y2, xi)
% Now sum them
output = y2Larger + y5;

Answer 2

[Ahmed A. Selman]

Use reshape

Y=function(X,m,n)

It works for any input matrix (X) with number of elements (m x n). The output is Y with m-rows by n-columns. The size of X and Y must be the same.