rbind/timestamp problem

Thank you,

now it works. I would never have never found the source of the problem. 
I am trying
to build a data frame with results from a sensitivity analysis
for a model. I use rbind because the number of rows is
unkown and i use the timestamp as a hint for the students
that they do not analyse data from last week :-).
Anyway, thank you very much, it helped a lot.

Greetings,
Georg

try this:

sensitivity=rbind(sensitivity,data.frame(mtype=2,cdate=as.POSIXct(Sys.time(), origin="1970-01-01")))
sensitivity

   mtype               cdate
1     1 2013-12-10 09:35:53
2     2 2013-12-10 09:37:02

The 'c' function is coercing to numeric.  If you want to 'rbind' rows
to a dataframe, then make sure you use a dataframe.

Jim Holtman
Data Munger Guru

Georg Hoermann,
Department of Hydrology and Water Resources Management
Kiel University, Germany
+49/431/2190916, mo: +49/176/64335754, icq:348340729, skype: ghoermann