MATLAB Answers

S.M
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How to plot several curves on the same figure plot with the same StartTime

Asked by S.M
on 25 Jun 2019 at 7:04
Latest activity Commented on by S.M
on 26 Jun 2019 at 7:48
Accepted Answer by Jan
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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R2019a

2 Answers

Answer by Jan
on 25 Jun 2019 at 9:28
 Accepted Answer

  2 Comments

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.
It worked, thank you Jan!

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Answer by S.M
on 26 Jun 2019 at 7:47

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);
and as result I get this:
Curveontop.jpg

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