ok how can I do to cancel le function factor for the moment ican't do this and I'm stuck with my problem for exemple 
   
     Id_Rep Id_Geno Val_O Id_TrT1
1       1   64238   145       2
2       1   64238     1       1
3       1   64238     2       1
4       1   64238     1       1
5       1   64238     1       1
6       1   64238     2       1
7       1   64238     1       1
8       2   64238     1       1
9       2   64238     2       1
10      2   64238     1       1
11      2   64238     1       1
12      2   64238     1       1
13      2   64238     1       1
14      1   64239   144       2
15      1   64239     1       1
   
  but when I write like below I have still levels and I'd like to disappear levels
   
   
   don[1:15,]$Val_O
 [1] 145 1   2   1   1   2   1   1   2   1   1   1   1   144 1  
127 Levels: 1 10 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 11 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 12 12.1 12.2 12.3 12.4 12.5 12.6 12.7 ... 9.9


             
---------------------------------

	[[alternative HTML version deleted]]

