editCharCols: Replace strings in character character columns of a data set

In NMdata: Preparation, Checking and Post-Processing Data for PK/PD Modeling

Replace strings in character character columns of a data set

Description

Replace strings in character character columns of a data set

Usage

editCharCols(data, pattern, replacement, as.fun, ...)

Arguments

data	The data set to edit.
pattern	Pattern to search for in character columns. Passed to 'gsub()'. By default, 'gsub()' works with regular expressions. See ... for how to disable this if you want to replace a specific string.
replacement	pattern or string to replace with. Passed to 'gsub()'.
as.fun	The default is to return data as a data.frame. Pass a function (say tibble::as_tibble) in as.fun to convert to something else. If data.tables are wanted, use as.fun="data.table". The default can be configured using NMdataConf.
...	Additional arguments passed to 'gsub()'. Especially, notice fixed=TRUE will disable interpretation of 'pattern' and 'replace' as regular expressions.

Examples

### remove commas from character columns 
dat <- data.frame(A=1:3,text=cc(a,"a,d","g"))
editCharCols(dat,pattern=",","")
### factors are not edited but result in an error
## Not run: 
dat <- data.frame(A=1:3,text=cc(a,"a,d",g),fac=cl("a","a,d","g"))
editCharCols(dat,pattern=",","")

## End(Not run)

NMdata documentation built on Nov. 11, 2023, 5:07 p.m.