Taking two arrays away from one another

2015 10 17
1 个回答
更新时间：2015 10 21
4 次查看（30 天）

0 个投票

Hi, I'm hoping someone may be able to help. I have a array of data 2x3224 and would like to subtract a array 566x1 from it, is it possible? Many thanks in advance.
Andy

2 个评论
显示 无 隐藏 无

Jan
Jan 2015-10-17
The question is not clear. How to you define "subtract"? Could you give a small example?
Andrew Wileman
Andrew Wileman 2015-10-21
Hi Jan, What I'm trying to do is with the following piece of code. XRUL=find(X_hat(1,:)>=X_hat(end)); DRUL=find(Data(1:s+window_length-1) <= Data(end)); ERUL= bsxfun(@minus,XRUL,DRUL);
Essentially, I have two sets of data, in terms of their magnitude and time. X_hat is a array of dimensions 2x3629 double and is a estimate of remaining useful life. Data is a array of dimension of 269x1 double and is the actual data from the past till the present. I'm interested in extracting the time dimension of each array and then subtracting one from the other. Essentially what I trying to do is find remaining useful life (RUL). RUL = length(estimated RUL) - length(data) Hope you may be able to help.
Andy

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Andrew Harris
Andrew Harris 2015-10-17

0 个投票

Array subtraction requires that the number of elements agree. What is the relationship between these two sets of numbers?

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Andrew Wileman
Andrew Wileman 2015-10-17
Hi Andrew, Thanks for getting back to me. My problem revolves around trying to predict remaining useful life. I generate a array which relates to the predicted values n steps ahead. I wish to take this away from the current and past measurements to leave the distance between the last measurement and the predicted point of failure. Not sure how to do this.

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 Categorical Arrays 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