Standardize a numeric vector by centering and scaling, handling NAs appropriately.
If the computed standard deviation is NA or zero, a small constant
(1e-6) is used instead to avoid division by zero.
The returned basis matrix has one column with this standardized name.
Arguments
- x
a numeric vector to standardize. Missing values are allowed and will be replaced with 0 after standardization.
Value
an instance of class Standardized extending ParametricBasis
Examples
# Standardize a numeric vector
x_vals <- c(10, 20, 30, 40, 50)
std_basis <- Standardized(x_vals)
print(std_basis$y)
#> std_x_vals
#> [1,] -1.2649111
#> [2,] -0.6324555
#> [3,] 0.0000000
#> [4,] 0.6324555
#> [5,] 1.2649111
print(std_basis$mean)
#> [1] 30
print(std_basis$sd)
#> [1] 15.81139