How to save datetime values in an array?
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Hi I am picking datetime value that is in this format
05-Feb-2015 18:02:47 05-Feb-2015 18:02:51 05-Feb-2015 18:02:55
I want to save it in an array so that later I can plot it. I am getting error to convert from datetime to double. What should i do?
6 Commenti
Guillaume
il 25 Giu 2015
Clarification, the d1 example is nothing to do with me and the OP (Venky) appears to confuse the char type with the datetime time. He (she?) also does not seem to understand string to numeric conversion.
Risposte (1)
Guillaume
il 24 Giu 2015
Modificato: Guillaume
il 24 Giu 2015
If you're getting this error it's because you're trying to put a datetime object in a preinitialised array (possibly with zeros ?) of double. I presume you preinitialise the array, because the datetime objects are created / obtained in a loop.
You can't put datetime objects in a preinitialised array of double (you can only put doubles in there). The datetimes have to go in a preinitialised array of datetime. One simple way of initialising such an array:
darr = datetime(zeros(10,1), 0, 0); %a 10x1 array of datetime
Note that there will be a simpler way of doing this in the next version of matlab.
5 Commenti
Guillaume
il 26 Giu 2015
A matrix can store data of only one type. So you can't put datetimes and float together, or float and integer together, or float and string together.
There are various kind of heterogeneous containers available in matlab, the simplest being cell arrays and tables
f1 = {d e}; %cell array
f2 = table(d, e, 'VariableNames', {'index', 'date'}); %table
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