Hello,
ok I know how to do to merge matrix or data.frame by "row.names" but my true objectif is to merge for example this data.frame:

> A
      obs
       Rép1 Rép2 Rép3 Rép4 Rép5 Rép6
  Var1  145  145  150  145  140  145
  Var2  150  150  160  155  155  150
  Var3  155  155  160  150  150  140
  Var4  150  145  145  145  140  145
  Var5  135  130  145  135  135  130

and 

> B
      pred
         Rép1   Rép2   Rép3   Rép4   Rép5   Rép6
  Var1 146.00 144.00 151.00 145.00 143.00 141.00
  Var2 154.33 152.33 159.33 153.33 151.33 149.33
  Var3 152.67 150.67 157.67 151.67 149.67 147.67
  Var4 146.00 144.00 151.00 145.00 143.00 141.00
  Var5 136.00 134.00 141.00 135.00 133.00 131.00

and the main difficulty is to keep the names and the supernames.
Do you know how. I know that the question isn't so easy but it's for a good display.
thanks.


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