How to plot a random line in between 0 and a random variable?

1 次查看（过去 30 天）
Matthew
Matthew 2023-9-19
评论： Walter Roberson 2023-9-19
I am currently learning how to use Matlab, this is what I have so far.
clc; clear;
V = randi([1 12]);
t = linspace(0,100,100);
y = V*sin(8*pi*t);
plot(t,y);
xlim([0 100]);
ylim([-14 14]);
V_sat = % I am trying to have this equal a random number between 0 and V
yLineP = V_sat;
yLineN = V_sat * -1;
yline(yLineP);
yline(yLineN);

请先登录，再回答此问题。

采纳的回答

Dyuman Joshi
Dyuman Joshi 2023-9-19
Ran in:
I assume you want to you don't just want integers, otherwise you would have used randi for that.
V = randi([1 12])
V = 5
t = linspace(0,100,100);
y = V*sin(8*pi*t);
plot(t,y);
xlim([0 100]);
ylim([-14 14]);
%rand returns a random scalar drawn from the uniform distribution in the interval (0,1).
V_sat = V*rand % I am trying to have this equal a random number between 0 and V
V_sat = 1.5908
yLineP = V_sat;
yLineN = V_sat * -1;
yline(yLineP);
yline(yLineN);
  3 个评论
显示 1更早的评论
Walter Roberson
Walter Roberson 2023-9-19
V_sat = V*rand % I am trying to have this equal a random number between 0 and V
Note by the way, that unless V happens to be exactly 0, that V*rand will never exactly equal 0, and will never exactly equal V .
In the default mode, rand() should be understood to be effectively randi([1 2^53-1])/2^53 where the range of random integers excludes 0 and excludes 2^53 exactly, so rand() can never return exactly 0 and can never return exactly 1.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Uniform Distribution (Continuous) 的更多信息

标签

产品


版本

R2023a

Community Treasure Hunt

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

Start Hunting!

Translated by