3D matrix, max in z direction

64 次查看（过去 30 天）
lunalara
lunalara 2016-8-7
评论： Rik 2021-2-17
Hello all ,
I am working with data arranged in a large 3D matrix and am wondering how I might find the maximum value in the Z direction of all elements at a specific x,y coordinate.
For example, if:
A = [1 2 3; 4 7 8]
B = [6 4 2; 3 5 7]
C = [3 3 9; 2 3 2]
and i arrange the matrix as such:
data_3d = cat(3, A, B, C)
I would like to find the maximum value of all 'z' elements positioned at the x,y coordinates(1,1) compared to each other, where: max_1 = 6
Is there a simple function to do this, or is it necessary to call each individual element in the following manner:
max_1 = max([A(1,1) B(1,1) C(1,1)])
(will this ^ even work?)
A bit of a matlab newbie, and any help is greatly appreciated. :) Thank you for your time

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2016-8-7
Try this:
max_data_3d = max(data_3d, [], 3)
max_data_3d =
6 4 9
4 7 8
  4 个评论
显示 2更早的评论
lunalara
lunalara 2016-8-8
Star, you have made my day.
It would probably be much easier to get the full maximum beforehand, then just pick and choose which values are important from the resulting matrix like you said.
Thank you so much for your help!!

请先登录，再进行评论。

更多回答（1 个）

Fathia Mohammed
Fathia Mohammed 2021-2-17
max(A,[],3)

类别

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

标签

Community Treasure Hunt

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

Start Hunting!

Translated by