MATLAB Answers

Horizontal First Differencer on a Matrix

1 ビュー (過去 30 日間)
Sarah Maas
Sarah Maas 2021 年 4 月 18 日
コメント済み: Sarah Maas 2021 年 4 月 18 日
I have a matrix M and I need to implement a first differencer along the horizontal dimension as follows such that the value of each element is replaced by:
y[n, m] = x[n, m] x[n, m 1]
Where n and m be the independent variables (integer indices) indexing the matrix elements along the vertical and horizontal dimensions, respectively.


Bjorn Gustavsson
Bjorn Gustavsson 2021 年 4 月 18 日
Have a look on the help and documentation to diff. For this case use:
y = diff(x,[],2);
% or explicitly 1st difference:
y = diff(x,1,2);
% or manually:
y = x(:,2:end) - y(:,1:end-1);
  1 件のコメント
Sarah Maas
Sarah Maas 2021 年 4 月 18 日
Thank you. Can you also tell me how i can derive the frequency response of the above?


その他の回答 (0 件)

Community Treasure Hunt

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

Start Hunting!

Translated by