Multiple Variable For Loop

4 次查看（过去 30 天）
Adam Parry
Adam Parry 2012-7-31
Hi
I have so far written this for loop
for i = 1:VgStep
for start = 1:VgStep:endPoint-VgStep+1
for step = VgStep:VgStep:endPoint
Vd{j}{i} = x(start:step);
Id{j}{i} = y(start:step);
end
end
end
I appologise for not explaining what all the terms are, but what I need is combine all those for's into one, because I end up just getting the same value for all my Vd{j}{i} terms
I'll explain better if it is needed
  4 个评论
显示 2更早的评论
Adam Parry
Adam Parry 2012-7-31
编辑：Adam Parry 2012-7-31
ah ok.
so here is some data
x y Vg
0 1 0
-1 2 0
-2 3 0
0 4 -1
-1 5 -1
-2 6 -1
0 7 -2
-1 8 -2
-2 9 -2
I need to split the data into three separate arrays
so I want
Vd{1}{1} = [0,-1,-2] Id{1}{1} = [1,2,3]
Vd{1}{2} = [0,-1,-2] Id{1}{2} = [4,5,6]
etc.
but i realised that the inside loops all finish before i can loop over to start a new cell.
How can I prevent this?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Albert Yam
Albert Yam 2012-7-31
In the code posted, you do not have 'j' (this might be elsewhere in your code), in your example, not even sure why you need it.
Since you know what your step size is, you don't need to loop it, the way it is now, seems incorrect. This is what I see from your start:stop. When start > stop , you will get an empty index.
1:3, 1:6, 1:9, 4:3, 4:6, 4:9, 7:3 (error), 7:6 (error), 7:9
Do you understand how the following works?
i = 1;
for start = 1:VgStep:length(Vg) %what does this count?
Vd{i} = x(start:start+2); %try to understand the indexing here
Id{i} = y(start:start+2);
i=i+1; %how is this affected by 'start'?
end

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 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