turn data to time series

hi, i have data structured in columns as [year month day hour price] . what is the right syntax to use function timeseries to turn my data to a time series? do i need to transform the year,month,day,hour to date string?

Answer 1

[Azzi Abdelmalek]

dat='1992-12-12 12:12:12',
a=datenum(dat,'yyyy-mm-dd HH:MM:SS')

% to get dat,

datestr(a)