After a successful business career, Tilmon Brown returned to UB to finish his degree, fulfilling a lifelong dream. Now a scholarship in his name is giving todays students of color the financial stability to fulfill theirs.
Description
This is a convenient wrapper that uses filter[] and min_rank[] to select the top or bottom entries in each group, ordered by wt.
Examples
# NOT RUN {
df % top_n[2]
# Negative values select bottom from group. Note that we get more
# than 2 values here because there's a tie: top_n[] either takes
# all rows with a value, or none.
df %>% top_n[-2]
if [require["Lahman"]] {
# Find 10 players with most games
# A little nicer with %>%
tbl_df[Batting] %>%
group_by[playerID] %>%
tally[G] %>%
top_n[10]
# Find year with most games for each player
tbl_df[Batting] %>% group_by[playerID] %>% top_n[1, G]
}
# }
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