Thanks Arun and Rui for help. Will try with your suggestion and get back if
the problem persist.

On Sep 19, 2012 5:41 PM, "Rui Barradas" <ruipbarradas@sapo.pt> wrote:

> Hello,
>
> Your code is reproducible and completely explains the issue, thanks.
> First I had the impression of a well organized question.
> Then I've read point 4.
>
> 4. The sequence 1:1 starts and ends at 1. You don't need b[1:1, 1:1], b[1,
> 1] will do.
>
> Then you assign a different value to 'b'. This time it's a vector, not a
> data.frame.
> The ifelse corrected is
>
> # 'b' is now 1-dim
> ifelse(b[1] < Sys.time()+5*60, rnorm(1,0,5), Sys.sleep)
>
> (Why the '*' and the double quotes?)
>
> Then I've realized that you had restarted the counting, but starting with
> point 2.
>
> Hope this helps,
>
> Rui Barradas
>
> Em 19-09-2012 22:54, Bhupendrasinh Thakre escreveu:
>
>> Hi List Members,
>>
>> This is a very stupid problem but I am not able to know what the solution
>> can be.
>> I am trying to run a query like below
>>
>> *Program Flow :*
>>
>> 1. a <- data.frame(table( cut( Sys.time() + seq(0,82800,3600), "60 mins")
>> ))      # It generates the 60 minute intervals. Thanks David
>> 2. b <- data.frame(a$Var1)
>>                             # To extract only First Column i.e. Var1
>> 3. class(b)
>>                                   # checking class
>> 4. b[1:1,1:1]
>>                                  # Trying to access the first row and the
>> problem starts.
>> 2. b <-  Sys.time()+ 5*60
>>                           # 5 minute interval increase
>> 3. ifelse(b[1:1,1:1] *"<" *Sys.time()+5*60,rnorm(1,0,5),**Sys.sleep)
>>
>> Error: unexpected string constant in "ifelse(b[2:2,1:1] "<"
>>
>> My only aim is to run "ifelse" for checking whether the program is running
>> or not.Please help
>>
>> *Data :*
>>
>> a <- structure(list(Var1 = structure(1:24, .Label = c("2012-09-19
>> 16:40:00",
>> "2012-09-19 17:40:00", "2012-09-19 18:40:00", "2012-09-19 19:40:00",
>> "2012-09-19 20:40:00", "2012-09-19 21:40:00", "2012-09-19 22:40:00",
>> "2012-09-19 23:40:00", "2012-09-20 00:40:00", "2012-09-20 01:40:00",
>> "2012-09-20 02:40:00", "2012-09-20 03:40:00", "2012-09-20 04:40:00",
>> "2012-09-20 05:40:00", "2012-09-20 06:40:00", "2012-09-20 07:40:00",
>> "2012-09-20 08:40:00", "2012-09-20 09:40:00", "2012-09-20 10:40:00",
>> "2012-09-20 11:40:00", "2012-09-20 12:40:00", "2012-09-20 13:40:00",
>> "2012-09-20 14:40:00", "2012-09-20 15:40:00"), class = "factor"),
>>      Freq = c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
>>      1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L)), .Names = c("Var1",
>> "Freq"), row.names = c(NA, -24L), class = "data.frame")
>>
>> *Session Info *
>>
>> R version 2.15.1 (2012-06-22)
>> Platform: i386-pc-mingw32/i386 (32-bit)
>>
>> locale:
>> [1] LC_COLLATE=English_United States.1252
>> [2] LC_CTYPE=English_United States.1252
>> [3] LC_MONETARY=English_United States.1252
>> [4] LC_NUMERIC=C
>> [5] LC_TIME=English_United States.1252
>>
>> attached base packages:
>> [1] stats     graphics  grDevices datasets  utils
>> [6] methods   base
>>
>> other attached packages:
>> [1] rcom_2.2-5     rscproxy_2.0-5
>>
>> loaded via a namespace (and not attached):
>> [1] tools_2.15.1
>>
>> Best Regards,
>>
>>
>> Bhupendrasinh Thakre
>>
>> *Disclaimer :*
>>
>> The information contained in this communication is confi...{{dropped:11}}
>>
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>>
>
>

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