center.RdMean center a variable
center(x, min_valid, max_na, grouping)A vector
Minimal number of valid values that is required for calculation. A value between 0 and 1 indicates a proportion of values (e.g., 0.5 = 50 percent of values have to be valid).
Maximum number of NAs that are allowed before returning NA. A value between 0 and 1 indicates a proportion of values (e.g., 0.5 = 50 percent NAs are allowed).
A variable with group values for calculating grouped centers.
center(c(1:10, NA, NaN))
#> [1] -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 NA NaN
center(mtcars$mpg, grouping = mtcars$cyl)
#> [1] 1.25714286 1.25714286 -3.86363636 1.65714286 3.60000000 -1.64285714
#> [7] -0.80000000 -2.26363636 -3.86363636 -0.54285714 -1.94285714 1.30000000
#> [13] 2.20000000 0.10000000 -4.70000000 -4.70000000 -0.40000000 5.73636364
#> [19] 3.73636364 7.23636364 -5.16363636 0.40000000 0.10000000 -1.80000000
#> [25] 4.10000000 0.63636364 -0.66363636 3.73636364 0.70000000 -0.04285714
#> [31] -0.10000000 -5.26363636