Plot a timeseries and count the days on x-axis.

Hello everyone.

I would like to plot a timeseries with the following code:

load('v_wt_s.mat')

v_wt_s=v_wt_s-273.15;

v_wt_s.TimeInfo.Units = 'hours';

v_wt_s.TimeInfo.Format = 'HH';

plot(v_wt_s)

title('Vorlauf WT-S TTR20-004')

xlabel('Hours')

ylabel('Temperature [°C]')

load('v_wt_s.mat')

I would like to display the hours on the x-axis but what i get is the following:

The scale on the x-axis is still showing the seconds and not the hours.

Does anyone know how to solve this?

Thank you very much for your answers.

[VBBV]

attache your data

[Silvan Zeyer]

Here is the data. Pleas notice that i have changed the question above. Thank you

[VBBV]

Can you ulpoad the file saved in Matlab Version 7.3 & above. I am not able to access it online

[Silvan Zeyer]

Here is my timetable data in a txt. file.

You could save it in Matlab as a timetable and then start with the code as follows:

v_wt_s=v_wt_s-273.15;

v_wt_s.TimeInfo.Units = 'hours';

v_wt_s.TimeInfo.Format = 'HH'; % Set format for display on x-axis.

plot(v_wt_s)

title('Vorlauf WT-S TTR20-004')

xlabel('Hours')

ylabel('Temperature [°C]')

Thanks a lot!

Answer 1

[Cris LaPierre]

Starting in R2021b, timetables are recommended over timeseries. I would therefore do the following.

load('v_wt_s.mat')
% Convert timeseries to timetable
v_wt_s=timeseries2timetable(v_wt_s);
% Convert time to hours
v_wt_s.Time.Format = "h";

v_wt_s.Data=v_wt_s.Data-273.15;
plot(v_wt_s.Time,v_wt_s.Data)
title('Vorlauf WT-S TTR20-004')
xlabel('Hours')
ylabel('Temperature [°C]')

[Silvan Zeyer]

That works very well with the new Matlab R2021b verison.

Thanks a lot!