Plot of maximum value of chosen column in matrix

1 次查看（过去 30 天）
Nazar Tarlanli
Nazar Tarlanli 2018-10-23
重新打开： madhan ravi 2018-11-15
clear
close all
clc
t = linspace(0,10,15);
t = t';
rng default
M = rand(15,5);
plot(t, M(:,1));
max_M = max(M); %maximum of each column
max = max(max(M)); %total max
I would like to plot maximum value of first column of matrix M(:,1); and indicate this information on a plot.
Something like this:

请先登录，再回答此问题。

回答（2 个）

madhan ravi
madhan ravi 2018-10-23
编辑：madhan ravi 2018-10-23
t = linspace(0,10,15);
t = t';
rng default
M = rand(15,5);
plot(t, M(:,1));
hold on
m = M(:,1)
[P,K]=findpeaks(m)
plot(t(K(1)),P(1),'x')
hold off
  4 个评论
显示 2更早的评论
Nazar Tarlanli
Nazar Tarlanli 2018-10-23
starting_point, ending_point - You mean I should define here X abscissa?

请先登录，再进行评论。

jonas
jonas 2018-10-23
编辑：jonas 2018-10-23
In this case you could simply find the max in each column in one go
[vm,idx] = max(M); %maximum of each column
plot(t,M);
scatter(t(idx),vm,'rx');
would you prefer to plot only the max of the first column, then
scatter(t(idx(1)),vm(1),'rx')

类别

在 Help Center 和 File Exchange 中查找有关 Annotations 的更多信息

标签

产品


版本

R2018b

Community Treasure Hunt

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

Start Hunting!

Translated by