Identify local minima in 3D plot/coordinate data

9 次查看（过去 30 天）
pkll201
pkll201 2024-4-3
评论： Mathieu NOE 2024-4-3
I have some coordinate data, and I am trying to find the points as described on this graph with arrows:
I am trying to find the point in the coordinate data in the 3D plot as it is not always clear when looking at just the vertical plots. I honestly can't get my head around it conceptually what I should do. Does anyone have any ideas on how I should approach this task? I have attached some example data with X,Y,Z position data in columns 1,2,3 respectively.

请先登录，再回答此问题。

采纳的回答

Mathieu NOE
Mathieu NOE 2024-4-3
Ran in:
hello
this is what you need :
Find local minima - MATLAB islocalmin - MathWorks France
try this
load('sampledata.mat')
x = sampledata(:,1);
y = sampledata(:,2);
z = sampledata(:,3);
% coordinates of the local minima
TF = islocalmin(z,'MinSeparation',100, 'MinProminence', 5);
xlm = x(TF);
ylm = y(TF);
zlm = z(TF);
plot3(x,y,z)
hold on
plot3(xlm,ylm,zlm,'r*')

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Discrete Data Plots 的更多信息

标签

产品


版本

R2023b

Community Treasure Hunt

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

Start Hunting!

Translated by