celfunc

Internal R package with utility functions for PK/PD data wrangling and formatting.

Install

devtools::install_github("rjazwiec/celfunc")

renv::install("rjazwiec/celfunc")

Functions

Formatting

Function	Description
pct_print(val, all, ...)	Divides val by all and returns a formatted percentage string.
pct_print2(pct, ...)	Formats a pre-computed proportion or percentage, replacing NA with a configurable token.
prt(val, digits)	Rounds a number and returns a trimmed character string suitable for table cells.
pv_prt(val, digits, pref)	Formats a p-value, using "< threshold" notation for values below the detection limit.

Data wrangling

Function	Description
rotate_df(df, rowname_col)	Transposes a data frame, promoting the first row to column names.
merge_suffix_columns(df)	Coalesces .x/.y column pairs produced by a dplyr join, preferring .x.
get_list_names(x)	Recursively enumerates all element paths in a nested list.
date_string(dt, fmt)	Formats a datetime as a compact timestamp string (default: "YYMMDD_HHMM").

Statistical / PK

Function	Description
geom_mean(x)	Returns the geometric mean, or NA if any non-missing value is non-positive.
geom_mean_sup(x, sup_val)	Geometric mean with zeros replaced by sup_val before log-transformation.
geom_mean_paired(x, y)	Geometric mean of x restricted to subjects with complete (x, y) pairs.
means_long(values, group, ...)	Geometric or arithmetic mean for use inside dplyr::summarise(), with optional complete-case restriction.
paired_median(values, group, ...)	Median with the same complete-case restriction logic as means_long().
geom_mean_r(x, y)	Geometric mean ratio GM(y)/GM(x) via Welch's t-test, returning point estimate, 95% CI, and p-value.
calc_auc(conc, time)	Area under the curve by the linear trapezoidal rule; preserves units-class attributes.

Units utilities

Function	Description
save_units_in_df(df)	Snapshots the unit strings of all units-class columns into a two-column data frame.
apply_units_from_df(df, units_spec)	Restores units-class attributes from a snapshot produced by save_units_in_df().

Helper functions for PK/PD reports