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I saw this stack-overflow question already. But what I want is to remove first N rows in my data set. I can't think of a solution as I am new to R.
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To remove first few rows from each group in R, we can use slice function of dplyr package after grouping with group_by function.
Delete Multiple Rows from R DataframeUse -c() with the row id you wanted to delete, Using this we can delete multiple rows at a time from the R data frame.
In this case, we need the opposite, so tail can be used.
N <- 5
tail(df, -N)
# a
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It can be wrapped in a function and specify a condition to return the full dataset if the value of N is negative or 0
f1 <- function(dat, n) if(n <= 0) dat else tail(dat, -n)
f1(df, 0)
f1(df, 5)
df <- data.frame( a = 1:10 )
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