[R] How to select given row of conditionally subsetted dataframe?

[Rui Barradas]

Hello,

If the sub-df has more than 2 rows,


tail(df[(df$Y>0.2) & (df$X<10),], 1)


Hope this helps,

Rui Barradas

Às 08:51 de 14/10/21, Luigi Marongiu escreveu:
> Hello,
> I have selected a subset of a dataframe with the vector syntax (if
> this is the name):
> ```
>> df[(df$Y>0.2) & (df$X<10),]
>       Y                X
> 10 0.2200642 1.591589
> 13 0.2941828 1.485951
> ```
> How can I select only the second row? I only managed to get the whole
> of whole columns:
> ```
>> df[(df$Y>0.2) & (df$X<10),2]
> [1] 1.591589 1.485951
>> df[(df$Y>0.2) & (df$X<10),][2]
>       X
> 10 1.591589
> 13 1.485951
>> df[(df$Y>0.2) & (df$X<10),][1]
>       Y
> 10 0.2200642
> 13 0.2941828
> ```
> Thank you
> 
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