Subset time series plot

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Bruno 2014-1-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/113753-subset-time-series-plot

评论： Bruno 2014-1-26

I have a time series plot (y). I want divide the time series into subsets and subsequently extract the subsets separately. In other word, I want to divide the time series plot into equal chunks.

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Azzi Abdelmalek 2014-1-26

Post a short example

Bruno 2014-1-26

I want divide the following plot into 7 equal chunks (subsets) and extract separately

t=0:0.001:10; x=0.2*cos(t) + cos(1.4*t) + 0.8*cos(5.2*t) + 0.02*randn(1, 10001);

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采纳的回答

Amit 2014-1-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/113753-subset-time-series-plot#answer_122223

编辑：Amit 2014-1-26

在 MATLAB Online 中打开

t = 0:0.001:10;
x = 0.2*cos(t) + cos(1.4*t) + 0.8*cos(5.2*t) + 0.02*randn(1, 10001);
N = 7; % Number of divisions
I = 1:ceil(numel(t)/N):numel(t);
if (I(end) ~= numel(t))
   I = [I numel(t)];
end
for j = 1:N
   Y{j,1} = [t(I(j):I(j+1))' x(I(j):I(j+1))'];
end

Here, Y is a cell array where every cell has the T and x subsections.

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Amit 2014-1-26

The code here plots every subset in a new figure. Thus you can see this.

The code I wrote pretty much covers what you asked. Try MATLAB documentation for different functions used here and you can figure out what changes you need to make from the code here to get what you want. With any effort from your side, this would spoon feeding.

Bruno 2014-1-26