Converting time data to plot
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I imported an excel file (xlsread) and the time data turned into decimal form. I wrote the following code get a what I think is called a character array of just times.
um_time = num(:,1);
theDate = char(datetime(num_time,'ConvertFrom','excel')); % or 'excel1904'
theTimes = theDate(:,end-7:end);
The output for theTimes variable looks like this
val =
19:17:10
19:17:10
19:17:10
19:17:10
....
The problem that I have is that I can't use the variable theTimes in a plot function.
How can I turn theTimes values into a column vector of values that I can use to plot?
0 Kommentare
Antworten (1)
Adam Danz
am 10 Sep. 2019
Bearbeitet: Adam Danz
am 16 Sep. 2019
After you convert to datetime, keep it in datetime format. There's no need to convert it to char.
From r2016b onward, you can use datetime objects in plot().
datetime(num_time,'ConvertFrom','excel')
Here's several of examples
[addendum]
If you're reading the dates in from excel you can read them in as datetime.
m = readmatrix('Dates.xlsx','OutputType','datetime');
2 Kommentare
Adam Danz
am 12 Sep. 2019
Bearbeitet: Adam Danz
am 13 Sep. 2019
I just updated my answer to add another approach similar to yours.
If you're going to use readtable(), you could use the DateTimeType name-value input instead of doing the conversion in your comment above.
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