Percent coefficient of variation (%CV) based on log-transformation

Computes the percent coefficient of variation (CV) based on the log-transformation of the input data. This can be more robust in certain cases, especially when the data is not normally distributed.

Usage

cv_log(x, na.rm = FALSE)

Arguments

x

a numeric vector with untransformed data

na.rm

logical, if TRUE then NA values are stripped from x before computation takes place

Value

a numeric value. If x contains a zero, then NaN is returned. If x is not numeric, NA_real_ is returned

References

Canchola et al. (2017) Correct use of percent coefficient of variation (% CV) formula for log-transformed data. MOJ Proteomics Bioinform. 2017;6(4):316‒317. DOI: 10.15406/mojpb.2017.06.00200

Examples

cv_log(c(5, 6, 3, 4, 5, NA), na.rm = TRUE)
#> [1] 27.0819962741