Pivot table

Usage

acro_pivot_table(
  data,
  values = NULL,
  index = NULL,
  columns = NULL,
  aggfunc = "mean"
)

data: The data to operate on.
values: Column to aggregate, optional.
index: If an array is passed, it must be the same length as the data. The list can contain any of the other types (except list). Keys to group by on the pivot table index. If an array is passed, it is being used as the same manner as column values.
columns: If an array is passed, it must be the same length as the data. The list can contain any of the other types (except list). Keys to group by on the pivot table column. If an array is passed, it is being used as the same manner as column values.
aggfunc: If list of strings passed, the resulting pivot table will have hierarchical columns whose top level are the function names

Cross tabulation of the data.