bruceR: grand_mean_center – R documentation

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grand_mean_center

Grand-mean centering.

Compute grand-mean centered variables. Usually used for GLM interaction-term predictors and HLM level-2 predictors.

grand_mean_center(data, vars, std = FALSE, add_suffix = "")

`data`	Data object.
`vars`	Variable(s) to be centered.
`std`	Standardized or not. Default is `FALSE`.
`add_suffix`	The suffix of the centered variable(s). Default is `""`. You may set it to `"_c"`, `"_center"`, etc.

A new data object containing the centered variable(s).

d=data.table(a=1:5, b=6:10)

d.c=grand_mean_center(d, "a")
d.c

d.c=grand_mean_center(d, c("a", "b"), add_suffix="_center")
d.c

Broadly Useful Convenient and Efficient R Functions

v0.6.2

GPL-3

Authors

Han-Wu-Shuang Bao [aut, cre]

Initial release

2021-04-08