cv: A filter function for the coefficient of variation.

In genefilter: genefilter: methods for filtering genes from high-throughput experiments

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

a	The lower bound for the cv.
b	The upper bound for the cv.
na.rm	If set to TRUE any NA's will be removed.

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))

Example output

[1] FALSE
[1] FALSE

genefilter documentation built on Jan. 23, 2021, 2:01 a.m.