I need help with this. How can I use indices to extract non consecutive numbers.

4 次查看（过去 30 天）

Adeena Daley 2020-3-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/511184-i-need-help-with-this-how-can-i-use-indices-to-extract-non-consecutive-numbers

评论： Stephen23 2020-5-18

I am new to this forum. I am learning how to navigate the program through the MATLAB Onramp. I am trying to use indices to extract non consecutive numbers

2 个评论
显示无隐藏无

Ameer Hamza 2020-3-16

Yes, you can easily extract them, so what is the problem? What forgot to mention the question.

Adeena Daley 2020-3-21

Thanks for your response

How do you use indices to extract non consecutive numbers?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Cris LaPierre 2020-3-16

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/511184-i-need-help-with-this-how-can-i-use-indices-to-extract-non-consecutive-numbers#answer_420426

If you are stuck on a task in MATLAB Onramp, click the "Show Solution" link under the task.

5 个评论
显示 3更早的评论隐藏 3更早的评论

per isakson 2020-5-18

编辑：per isakson 2020-5-18

在 MATLAB Online 中打开

>> density = 1:12;    % sample data, assuming density is a vector
>> density([1,3,6])   % 
ans =
     1     3     6
>> 

Stephen23 2020-5-18

在 MATLAB Online 中打开

"There is no indication of how to correctly extract non-consecutive numbers."

In the very first section on this page (entitled "Indexing Vectors") the third example is introduced with this exact text "Or the subscript can itself be another vector:" and then proceeds to give the example code:

  v([1 5 6])      % Extract the first, fifth, and sixth elements
  ans =
        16   2   11

The first and fifth elements are clearly non-consecutive.

"I am assuming this should be one indice"

It is not clear what you mean by "one indice", but the example given on that page clearly shows one vector being used to obtain the non-consecutive elements, so you were thinking in the right direction.

请先登录，再进行评论。

请先登录，再回答此问题。