find local max in a matrix

4 次查看（过去 30 天）
Fateme Jalali
Fateme Jalali 2016-2-22
编辑： Stephen23 2016-2-22
Hello.I have this matrix
A=[116 3;107 6;114 6;119 6;117 9;120 9;108 15
;113 18;115 18;112 21;111 24]
.I want to detect local maximums from second column and where local max happened that row should be kept in a new matrix. here (112 21) & (111 24) should be saved in matrix B. can any one help me plz?
  1 个评论
Stephen23
Stephen23 2016-2-22
编辑：Stephen23 2016-2-22
@ Fateme Jalali: please stop posting duplicate questions. You have posted this four times so far. It does not help you get an Answer! If you want to give more information just write comments to this Question.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2016-2-22
You can get the local max with imdilate():
A=[116 3;107 6;114 6;119 6;117 9;120 9;108 15
;113 18;115 18;112 21;111 24]
windowSize = 3;
maxCol2 = imdilate(A(:,2), true(windowSize, 1))
I'm not sure why you have only two rows instead of local max for every row.

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