How can we explain this error?

First call no problem second call an error message.

>>   datenumber = datevec('06/08/2012 15:20','dd/mm/yyyy HH:MM');

>>   datenumber = datevec('06/08/2012 15:20','dd/mm/yyyy HH:MM');

Error using dtstr2dtvecmx
Failed on converting date string to date number.

Error in datevec (line 119)
            y = dtstr2dtvecmx(t,icu_dtformat);

>>   datenumber = datevec('06/08/2012 15:20','dd/mm/yyyy HH:MM');

>>   datenumber = datevec('06/08/2012 15:20','dd/mm/yyyy HH:MM');

Error using dtstr2dtvecmx
Failed on converting date string to date number.

Error in datevec (line 119)
            y = dtstr2dtvecmx(t,icu_dtformat);

>> datenumber = datevec('06/08/2012 15:20','dd/mm/yyyy HH:MM');

119             y = dtstr2dtvecmx(t,icu_dtformat);

>> datenumber = datevec('06/08/2012 15:20','dd/mm/yyyy HH:MM');

119             y = dtstr2dtvecmx(t,icu_dtformat);
Error using dtstr2dtvecmx
Failed on converting date string to date number.

Error in datevec (line 119)
            y = dtstr2dtvecmx(t,icu_dtformat);

[Wayne King]

I have no problem executing these lines. Can you please indicate which version of MATLAB, you are using.

Answer 1

[per isakson]

I cannot reproduce the error with R2012a 64bit on Windows7.

>>  datenumber = datevec('06/08/2012 15:20','dd/mm/yyyy HH:MM')
datenumber =
        2012           8           6          15          20           0

Answer 2

[Azzi Abdelmalek]

check in your folder if a file named "datenumber" does'nt exist? if yes, rename it, restart matlab, i think it will be ok. or instead using a variable datenumber, change it.