[R] subseting a data frame

[Rui Barradas]

Hello,

> HI,
> this is my problem I want to subset this file df, using only  unique
> df$exon printing the line once even if  df$exon appear several times:
> 
> unique(df$exon) will show me the unique exons
> If I try to print only the unique exon lines
> with df[unique(df$exon),] -this doesn't print only the unique ones :(
> 

Try

inx <- match(unique(df$exon), df$exon)
df[inx, ]


Hope this helps,

Rui Barradas


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