How to represent function which is defined on different interval?

10 次查看（过去 30 天）
Jinman Park
Jinman Park 2018-5-27
评论： Jinman Park 2018-5-29
I'm trying to plot function that defined on different intervals like following.
Let
phi_i(x)=M*(x-(i-1)/M) on [(i-1)/M,i/M] and M*((i+1)/M-x) on [i/M,(i+1)/M] and 0 on other values.
I got values u_1, u_2 ...u_(M-1) and note u(x)=u_1 phi_1(x)+u_2 phi_2(x) +...+u_(M-1) phi(x)
How to plot u(x)?

请先登录，再回答此问题。

采纳的回答

Rik
Rik 2018-5-27
You can use a for-loop to compose the function out of the parts using anonymous functions:
phi_part_i=@(x,i) ...
M*(x-(i-1)/M)*( (i-1)/M <x & x< i/M ) + ...
M*((i+1)/M-x)*( i/M <x & x< (i+1)/M );
phi_1=@(x) phi_part_i(x,1);
phi_1_10=@(x) 0;
for m=1:10
phi_1_10=@(x) phi_1_10(x) + phi_part_i(x,m);
end
  7 个评论
显示 5更早的评论
Walter Roberson
Walter Roberson 2018-5-28
Notice how I change the * operators into .* operators in my response to you before. You need to do the same thing.

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 Graphics Objects 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