Plot data with date and time

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Hüseyin Uzun
Hüseyin Uzun 2021-6-10
回答： KSSV 2021-6-10
I have an excel file which is created automatically and data is added every 10 minutes. I want to read and plot the days once a day, so I take the last 144 data points. When I plot x and y, the error message "Error using plot. Not enough input arguments."
I know that I have to convert my x vector, which contains the time data, somehow. I have looked at the forums and tried different approaches, but it has not worked so far.
x1=datenum(x,'HH:MM:SS');
This one didn't work especially since I don't know how to add the date next to the time.
so far i have only managed to extract the x and y values, which i need for now, from the excel file:
table=readtable('Datalogger.xlsx');
x=table.DatumUndUhrzeit;
x=x(end-144:end);
y=table.Temp_R_210__C;
y=y(end-144:end);

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采纳的回答

KSSV
KSSV 2021-6-10
thedates = datetime(datestr((x)));
y = str2double(y) ;
plot(thedates,y)

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