summarise_xpdb: Group/ungroup and summarize variables in an xpdb

In xpose: Diagnostics for Pharmacometric Models

Group/ungroup and summarize variables in an xpdb

Description

group_by() 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.

Usage

## S3 method for class 'xpose_data'
group_by(.data, ..., .problem, .source, .where)

## S3 method for class 'xpose_data'
ungroup(x, ..., .problem, .source, .where)

## S3 method for class 'xpose_data'
summarise(.data, ..., .problem, .source, .where)

## S3 method for class 'xpose_data'
summarize(.data, ..., .problem, .source, .where)

Arguments

.data	An xpose database object.
...	Name-value pairs of expressions. Use NULL to drop a variable. These arguments are automatically quoted and evaluated in the context of the data frame. They support unquoting and splicing. See the dplyr vignette("programming") for an introduction to these concepts.
.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).
x	Same as .data (used for consistency with dplyr functions).

Examples

# Create a distribution plot of Cmax
xpdb_ex_pk %>% 
 group_by(ID, SEX, .problem = 1) %>% 
 summarize(CMAX = max(DV), .problem = 1) %>% 
 ungroup(.problem = 1) %>% 
 xplot_distrib(aes(x = CMAX, density_fill = SEX), type = 'dr')
 

xpose documentation built on July 9, 2023, 6:12 p.m.