A filter function for the coefficient of variation.

Description

cv returns a function with values for a and b bound. This function takes a single argument. It computes the coefficient of variation for the input vector and returns TRUE if the coefficient of variation is between a and b. Otherwise it returns FALSE

Usage

cv(a=1, b=Inf, na.rm=TRUE)

Arguments

Details

The coefficient of variation is the standard deviation divided by the absolute value of the mean.

Value

It returns a function of one argument. The function has an environment with bindings for a and b.

Author(s)

R. Gentleman

See Also

pOverA, kOverA

Examples

  set.seed(-3)
  cvfun <- cv(1,10)
  cvfun(rnorm(10,10))
  cvfun(rnorm(10))

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(genefilter)
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/genefilter/cv.Rd_%03d_medium.png", width=480, height=480)
> ### Name: cv
> ### Title: A filter function for the coefficient of variation.
> ### Aliases: cv
> ### Keywords: manip
> 
> ### ** Examples
> 
>   set.seed(-3)
>   cvfun <- cv(1,10)
>   cvfun(rnorm(10,10))
[1] FALSE
>   cvfun(rnorm(10))
[1] FALSE
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>