Hello Bart,

I solved your problem.

Please find the code given below,

**************************************************************************************************************************************** 

dat <-structure(list(Batch = c(1L, 1L, 2L, 2L, 3L, 3L, 4L, 4L, 4L, 4L, 
4L, 4L), Test = structure(c(1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 2L, 
2L), .Label = c("A", "B"), class = "factor"), Result = structure(c(12L, 
4L, 8L, 6L, 11L, 5L, 10L, 2L, 9L, 3L, 1L, 7L), .Label = c("6,604 - 6,59 
- 6,585 - 6,588", "6,61", "6,625 - 6,607", "6,675", "6,71 - 6,74", "6,76 
- 6,75", "6,79 - 6,80", "98,28 - 99,14", "98,52", "99,05 - 99,15", 
"99,74 - 98,19",  "99,77 - 99,62"), class = "factor"), X = c(NA, NA, NA, 
NA, NA, NA, NA, NA, NA, NA, NA, NA), LL = structure(c(2L, 1L, 2L, 1L, 
2L, 1L, 2L, 1L, 2L, 1L, 1L, 1L), .Label = c("6.00", "95"), class = 
"factor")), .Names = c("Batch","Test", "Result", "X", "LL"), class = 
"data.frame", row.names = c(NA, -12L))

dat1<-NULL
rno<-0
for (thisResult in dat$Result)
{
   rno<-rno+1
   resTemp<-unlist(strsplit(thisResult," - "))
   i<-length(resTemp)
   if(i>1)
   {
     for(j in 1:i)
     {
       rbind(dat1,data.frame(Batch=paste(dat$Batch[rno] 
,".",j),Test=dat$Test[rno],Result=resTemp[j],X=dat$X[rno],LL=dat$LL[rno]))->dat1
       j=j+1
     }
   }
   else
   {
rbind(dat1,data.frame(Batch=toString(dat$Batch[rno]),Test=dat$Test[rno],Result=dat$Result[rno],X=dat$X[rno],LL=dat$LL[rno]))->dat1
   }
}
dat1
rm(dat1,i,j,resTemp,thisResult,rno)
***************************************************************************************************************************************

Output :

         Batch  Test      Result    X     LL
1        1 . 1    A        99,77    NA    95
2        1 . 2    A        99,62    NA    95
3        1         B        6,675    NA    6.00
4        2 . 1    A        98,28    NA    95
5        2 . 2    A        99,14    NA    95
6        2 . 1    B        6,76      NA    6.00
7        2 . 2    B        6,75      NA    6.00
8        3 . 1    A        99,74    NA    95
9        3 . 2    A        98,19    NA    95
10      3 . 1    B        6,71      NA    6.00
11      3 . 2    B        6,74      NA    6.00
12      4 . 1    A        99,05    NA    95
13      4 . 2    A        99,15    NA    95
14      4         B        6,61      NA    6.00
15      4         A        98,52    NA    95
16      4 . 1    B        6,625    NA    6.00
17      4 . 2    B        6,607    NA    6.00
18      4 . 1    B        6,604    NA    6.00
19      4 . 2    B        6,59      NA    6.00
20      4 . 3    B        6,585    NA    6.00
21      4 . 4    B        6,588    NA    6.00
22      4 . 1    B        6,79      NA    6.00
23      4 . 2    B        6,80      NA    6.00


Thanks & Regards,

*Mr. Jayesh B. Baviskar
Pune, India.

*On 2/20/2014 2:34 PM, Bart Joosen [via R] wrote:
> Hi,
>
> I have a dataframe with some data from experiments:
> Batch   Test  Result        LL        ......(many more columns, all 
> the same within Batch/Test)
>   1         A     6,5-6,7     6,00    .....
>   1         B     95,1-95,3  95,00  .....
>   2         A     6,5-6,7     6,00    .....
> ...
>
> Some results have double values, instead of 1 single numeric value, 
> all separated by "-".
> But now I want a dataframe with only 1 value per Batch/Test, and 
> batches with double values should be renamed to 1a, 1b, ...
>
> So
> Batch   Test  Result        LL        ......(many more columns, all 
> the same within Batch/Test)
>   1a        A     6,5
>   1b        A     6,7     6,00    .....
>   1a        B     95,1  95,00  .....
>   1b        B     95,3  95,00  .....
>   2a        A     6,5     6,00    .....
>   2b        A     6,7     6,00    .....
> ...
>
> I tried with by and strsplit, but couldn't figure it out.
> Any help would be appreciated, example data below.
>
> Bart
>
>
> dat <-
> structure(list(Batch = c(1L, 1L, 2L, 2L, 3L, 3L, 4L, 4L, 4L,
> 4L, 4L, 4L), Test = structure(c(1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L,
> 1L, 2L, 2L, 2L), .Label = c("A", "B"), class = "factor"), Result = 
> structure(c(12L,
> 4L, 8L, 6L, 11L, 5L, 10L, 2L, 9L, 3L, 1L, 7L), .Label = c("6,604 - 
> 6,59 - 6,585 - 6,588",
> "6,61", "6,625 - 6,607", "6,675", "6,71 - 6,74", "6,76 - 6,75",
> "6,79 - 6,80", "98,28 - 99,14", "98,52", "99,05 - 99,15", "99,74 - 
> 98,19",
> "99,77 - 99,62"), class = "factor"), X = c(NA, NA, NA, NA, NA,
> NA, NA, NA, NA, NA, NA, NA), LL = structure(c(2L, 1L, 2L, 1L,
> 2L, 1L, 2L, 1L, 2L, 1L, 1L, 1L), .Label = c("6,00", "95"), class = 
> "factor")), .Names = c("Batch",
> "Test", "Result", "X", "LL"), class = "data.frame", row.names = c(NA,
> -12L))
>
>
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