How to plot several curves on the same figure plot with the same StartTime

Question

S.M 2019-6-25

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https://ww2.mathworks.cn/matlabcentral/answers/468745-how-to-plot-several-curves-on-the-same-figure-plot-with-the-same-starttime

评论： S.M 2019-6-26

Hi guys,

again a small problem. I would like to plot several curves in one figure, but beecause it's a time series, I get a plot where the curves are behind each other.

I saw in one tutrial, that it's possible to set the StartTime to zero for both curves, but I can't find it anymore. Could you please help me?

% Read tables
C1 = readtable('Curve1.xlsx');
C2 = readtable('Curve2.xlsx');
% Convert to timetable
TTC1 = table2timetable(C1);
TTC2 = table2timetable(C2);
% Interpolate
dt = milliseconds(100);
IC1 = retime(TTC1,'regular','linear','TimeStep', dt);
IC2 = retime(TTC2,'regular','linear','TimeStep', dt);
% Plot
plot(IC1.Time, IC1.Volt);
hold on;
plot(IC2.Time, IC2.Volt);

Thanks a lot.

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Answer 1

Jan 2019-6-25

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https://ww2.mathworks.cn/matlabcentral/answers/468745-how-to-plot-several-curves-on-the-same-figure-plot-with-the-same-starttime#answer_380678

Do you mean https://www.mathworks.com/help/matlab/ref/timeseries.synchronize.html ?

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S.M 2019-6-25

编辑：S.M 2019-6-25

I don't know if this is it, but I want to plot the curves without date and hours. Both curves should start from 0 seconds, so that he curves lie one above the other, not like now behind each other.

Later the code should be able to plot 10 curves or more.

S.M 2019-6-26

It worked, thank you Jan!

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Answer 2

S.M 2019-6-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/468745-how-to-plot-several-curves-on-the-same-figure-plot-with-the-same-starttime#answer_380844

I don't know if there is a better solution or not, but I solved it with:

% Read tables
C1 = readtable('Curve1.xlsx');
C2 = readtable('Curve2.xlsx');
% Convert to timetable
TTC1 = table2timetable(C1);
TTC2 = table2timetable(C2);
% Interpolate
dt = milliseconds(100);
IC1 = retime(TTC1,'regular','linear','TimeStep', dt);
IC2 = retime(TTC2,'regular','linear','TimeStep', dt);
% Set StartTime
StartTime = datetime('13.06.2019 00:00.000', 'InputFormat', 'dd.MM.yyyy mm:ss.SSS');
IC1.Properties.StartTime = StartTime;
IC2.Properties.StartTime = StartTime;
% Plot
plot(IC1.Time, IC1.Volt);
hold on;
plot(IC2.Time, IC2.Volt);