[R] Aggregate or extract function ?

[Celine]

Thanks for your help, I still have a little problem with this function
because I don't have the same number of line in my two datarame so when I
try to apply the dataframe function, I obtain this response ; that I have a
different number of lines.

Erreur dans data.frame(train, test[rowz, ]) : 
  les arguments impliquent des nombres de lignes différents : 50327, 66592
Do you know how I could solve this problem ?

Thanks,

Céline


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