Join item summary

Functions for joining summary data to data frame. They perform respective variant of summarise item functions and then left join to the input its result (by item columns).

join_item_summary(tbl, item, ..., .prefix = "")

join_game_summary(tbl, ..., .prefix = "")

join_player_summary(tbl, ..., .prefix = "")

Arguments

tbl	Data frame.
item	Character vector of columns to group by.
...	Name-value pairs of summary functions (as in dplyr::summarise).
.prefix	A string to be added to all summary functions' names.

Value

Result of left_join() to the input data frame.

Details

join_game_summary() and join_player_summary() are wrappers for join_item_summary() using item = "game" and item = "player" respectively.

See also

Compute item summary

Common item summary functions for competition results.

Examples

ncaa2005 %>% join_player_summary(player_mean_score = mean(score))
#> # A longcr object:
#> # A tibble: 20 x 4
#>     game player score player_mean_score
#>    <int> <chr>  <int>             <dbl>
#>  1     1 Duke       7              8.75
#>  2     1 Miami     52             34.5 
#>  3     2 Duke      21              8.75
#>  4     2 UNC       24             12.5 
#>  5     3 Duke       7              8.75
#>  6     3 UVA       38             18.5 
#>  7     4 Duke       0              8.75
#>  8     4 VT        45             33.5 
#>  9     5 Miami     34             34.5 
#> 10     5 UNC       16             12.5 
#> 11     6 Miami     25             34.5 
#> 12     6 UVA       17             18.5 
#> 13     7 Miami     27             34.5 
#> 14     7 VT         7             33.5 
#> 15     8 UNC        7             12.5 
#> 16     8 UVA        5             18.5 
#> 17     9 UNC        3             12.5 
#> 18     9 VT        30             33.5 
#> 19    10 UVA       14             18.5 
#> 20    10 VT        52             33.5