Specify datenum starting value

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Sander Ustrup
Sander Ustrup 2021-3-28
回答： Star Strider 2021-3-28
Hello everyone,
So I'm trying to make a plot with datenum on the X-axis and outdoor temperature on the y-axis.
I have data from 11 AM - 11 AM the folllowing day.
What i would like to do is have my X-axis start at 11 AM, and end at 11 AM.
However when i plot with the datenum I get the current result
What i would like is the following plot, with dates on the x-axis.
My code is the following:
%% Data
time = [
'11:00:00'
'11:15:00'
...
'10:45:00'
'11:00:00'
];
outdoor_T = [
8.55
8.55
...
5.6
5.6
];
%% Plots
DateNumber = datenum(time, 'HH:MM:SS');
figure
plot(DateNumber, outdoor_T)
datetick('x', 'HH:MM:SS', 'keeplimits')
ylabel('Celcius degrees'), xlabel('Hour of the day')
title('Outdoor temperature')
I tried looking at the documentation for datenum, and unfortunately couldn't find an answer.
I hope my question makes sense, otherwise please ask me to elaborate.
Best regards,
Sander

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采纳的回答

Star Strider
Star Strider 2021-3-28
It will be necessary to combine the dates with the time values in order to do what you want. In most instances, this is relatively straightforward, however I would need to see your data to determine how best to do it.

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