Functions for computing item summary, i.e. some summary measurements (of arbitrary nature) of item (one or more columns) present in data frame.
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Character vector of columns to group by.
Name-value pairs of summary functions (as in dplyr::summarise).
A string to be added to all summary functions' names.
summarise_item() performs the following steps:
tbl by columns stored in
item. Note that starting from 0.8.0
dplyr this might give a warning in case of implicit
factor columns (
NA present in column values but not in its levels)
suggesting to add
NA to levels.
Convert to tibble.
.prefix to names of summary functions.
summarise_player() are wrappers for
item = "game" and
item = "player" respectively.
summarise() as not grouped
Common item summary functions for competition results.
Join item summary
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