summarise_xpdb: Group/ungroup and summarize variables in an xpdb

In xpose.xtras: Extra Functionality for the 'xpose' Package

Group/ungroup and summarize variables in an xpdb

Description

group_by_x() takes an existing table and converts it into a grouped table where operations are performed "by group". ungroup() removes grouping. summarize() reduces multiple values down to a single value.

Note: this function uses xpose.xtras::edit_xpose_data, but is otherwise the same as <xpose::group_by>.

Usage

group_by_x(.data, ..., .problem, .source, .where)

ungroup_x(.data, ..., .problem, .source, .where)

Arguments

.data	An xpose database object.
...	Name-value pairs of expressions. Use NULL to drop a variable.
.problem	The problem from which the data will be modified
.source	The source of the data in the xpdb. Can either be 'data' or an output file extension e.g. 'phi'.
.where	A vector of element names to be edited in special (e.g. .where = c('vpc_dat', 'aggr_obs') with vpc).

Value

Group data in an xpose data object

xpose.xtras documentation built on April 4, 2025, 2:13 a.m.