how to resize a given signal?

6 次查看（过去 30 天）
Sivakumaran Chandrasekaran
how to resize a given signal? My input signals are y2=[ 1 9385];yh=[1 37508]; I need to find y2+y5.

请先登录，再回答此问题。

回答（2 个）

Image Analyst
Image Analyst 2013-3-27
编辑：Image Analyst 2013-3-27
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;
Ahmed A. Selman
Ahmed A. Selman 2013-3-27
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.

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by