convert a time series into a real time animated plot

Question

Marc Elmeua 2022-3-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1681364-convert-a-time-series-into-a-real-time-animated-plot

评论： Star Strider 2022-3-27

timeseries.mat

I am trying, with no success to display a plot of the attached timeseries in a way that it shows like if it was a real-time plotting.

Any help?

Thanks in advance

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Answer 1

Star Strider 2022-3-26

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https://ww2.mathworks.cn/matlabcentral/answers/1681364-convert-a-time-series-into-a-real-time-animated-plot#answer_927689

在 MATLAB Online 中打开

Try something like this —

LD = load('timeseries.mat');
time2 = LD.time2;
Time = time2.Time;
Data = time2.Data;
DataRange = [min(Data), max(Data)];
TimeRange = [min(Time), max(Time)];
figure
hold on
for k = 1:numel(Time)-1
    plot(Time(k:k+1), Data(k:k+1), '-b')
    axis([TimeRange DataRange])
    grid
    pause(0.0001)
end
hold off

Make appropriate changes to get the desired result.

.

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Marc Elmeua 2022-3-27

Thanks everyone for your help. All the scripts work perfectly, yet I find this the most efficient.

PS: if someone has the same problem, maybe this helps: I was writing similar scripts (with drawnow) to the ones proposed in this thread, but I was executing them on a Livescript, hence they were not working properly.

Star Strider 2022-3-27

@Marc Elmeua — Thank you!

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Answer 2

Voss 2022-3-26

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https://ww2.mathworks.cn/matlabcentral/answers/1681364-convert-a-time-series-into-a-real-time-animated-plot#answer_927679

在 MATLAB Online 中打开

Here's one way:

load('timeseries.mat')
figure();
my_line = line();
for ii = 1:numel(time2.Time)
    set(my_line,'XData',time2.Time(1:ii),'YData',time2.Data(1:ii));
    drawnow();
end

Alternatively, you can use an animatedline.

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Answer 3

Walter Roberson 2022-3-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1681364-convert-a-time-series-into-a-real-time-animated-plot#answer_927684

在 MATLAB Online 中打开

Times = time2.Time;
Data = time2.Data;
N = 10;   %at a time -- one at a time is very slow
nsamp = length(Times);
h = animatedline();
for K = 1 : N : nsamp
    idx = K : min(K+N-1,  nsamp);
    addpoints(h, Times(idx), Data(idx));
    drawnow();
end