convert from datenum to a date

Hi,

is ther any function which convert the serial number from the function (detenum) to the original date like .

I have a vector of date and time and i converted it with datenum. I made a plot of another variable with the date_time vector. i get just the serial number.

thnks

Answer 1

[Jan]

Please post any details. What format does "the original date" have? What does "I made a plot" exactly mean and where do you want the "date" to appear?

The command datestr and datevec convert datenum values to other date formats. The command datetick writes nice dates instead of serial date numbers to the ticklables of axes.

Answer 2

[Rica]

Hi! the goal was to select 200 data from i big data. i took the time as a parameter

and converted it with datenum.

i wanted to plot the variation of selected measured data with the (date and time)

it will be for me nice to show also the date and time un the plot not only the converted eith datenum.

if true
  % 
date=                time=
'1.2.2010'            '1:2:59'  
'2.2.2010'            '2:3:50' 
'5.2.2010'             ...... 
...                    .......    
...                    .....
....                   .....

i converted them with datnum

converted=datenum(date)+datenum(time)

thanky

Answer 3

[Andreas Svedin]

If you use "datenum" on a datetime array and want to get it converted back to datetime use the command below. It seem to work

"datetime(datestr(dates))"

[Peter Perkins]

Or more directly: datetime(dates,'ConvertFrom','datenum')

[Fercho_Sala]

@Peter Perkins good answer, but it does't separe in one colum dates and in other column hours, how do you do it?