Subset data frame bay selecting row data every 16 days in r

Question

I have this huge data set

and wanted to select the row every 16 days. I tried with dplyr but could not get it to work.

Answer 1

We can use seq

 df[seq(1, nrow(df), by = 16),]

Answer 2

To select every 16th row, you can do:

df[seq(nrow(df)) %% 16 == 1,]

This will filter your data frame so it only contains row 1, row 17, row 33, row 49, etc

Answer 3

Or using filter

library(dplyr)
df %>%
  filter(row_number() %% 16 == 1)