MATLAB: Divide data according to year, month, day

devide datetime array

Hi guys

I have a set of datatime array data in the following format. I wanted to categorize them in groups acording to year, month and day. Does anyone know how to do this? Thanks in advance!

1×2 datetime array:

23-Aug-2018 12:23:52 15-Oct-2017 14:43:56

Best Answer

See if the findgroups (link) function (introduced in R2015b) will do what you want.

Related Solutions

MATLAB: How is datevec used on an m*8 matrix in the form [YEAR, MONTH, DAY, HOUR, MINUTE, SECOND, Day of Year, Value]

data = [1980  1  1  0  0  0  1  -27
1980  1  1  1  0  0  1  -20
1980  1  1  2  0  0  1  -23
1980  1  1  3  0  0  1  -28
1980  1  1  4  0  0  1  -32
1980  1  1  5  0  0  1  -32
1980  1  1  6  0  0  1  -32
1980  1  1  7  0  0  1  -31
1980  1  1  8  0  0  1  -33];
d = data(:,1:end-2) ;
val = data(:,end) ;
date = datetime(d) ;
plot(date,val)

MATLAB: Function for day of the year

Introduced in R2014b

>> day( datetime('07-Jan-2017', 'InputFormat', 'dd-MMM-yyyy' ), 'dayofyear' )
ans =
     7

"accounting for leap years" If not, shame on The MathWorks!

>> day( datetime('01-Mar-2017', 'InputFormat', 'dd-MMM-yyyy' ), 'dayofyear' )
ans =
    60
>> day( datetime('01-Mar-2016', 'InputFormat', 'dd-MMM-yyyy' ), 'dayofyear' )
ans =
    61

Best Answer

Related Solutions

MATLAB: How is datevec used on an m*8 matrix in the form [YEAR, MONTH, DAY, HOUR, MINUTE, SECOND, Day of Year, Value]

MATLAB: Function for day of the year

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