I have to create a partial data set containing only the 20 days with the highest daily mean air temperature values for each year. My dataset looks like this:
| date | mean |
|---|---|
| 1997-07-15 | 27.05292 |
| 1997-07-17 | 26.86542 |
| 1997-06-21 | 26.10958 |
| 1997-07-16 | 26.05833 |
| 1997-07-14 | 26.02500 |
| 1997-06-25 | 25.80125 |
| 1997-07-18 | 25.36208 |
| 1997-06-22 | 25.18875 |
| 1997-06-29 | 24.72333 |
| 1997-06-30 | 24.71000 |
...
I tried to use the code bellow, but this one only filters the maximum from every year and creates a dataframe with 20 rows - but I need the Top 20 mean values from every year (1997 – 2010). I use the class data.frame btw. I would be so grateful if anyone can help me, I just can't figure it out!
top_20_per_year <- daily_mean_temp_sorted %>% slice_max(mean, n = 20) %>%