Remove Variables with Low Coefficient of Variation

Filters variables whose coefficient of variation falls below a threshold. Default behavior is to remove variables with zero coefficient of variation.

Usage

remove_low_cv(x, cv_cutoff = 0, by = NULL, strict = FALSE)

# S3 method for class 'glyexp_experiment'
remove_low_cv(x, cv_cutoff = 0, by = NULL, strict = FALSE)

# S3 method for class 'matrix'
remove_low_cv(x, cv_cutoff = 0, by = NULL, strict = FALSE)

# Default S3 method
remove_low_cv(x, cv_cutoff = 0, by = NULL, strict = FALSE)

Arguments

x

Either a glyexp_experiment object or a matrix.

cv_cutoff

The cutoff for coefficient of variation. Defaults to 0.

by

A factor specifying the groupings. Defaults to NULL.

strict

If FALSE, remove a variable only if it passes the coefficient of variation threshold in all groups. If TRUE, remove a variable if it passes the coefficient of variation threshold in any group.

Value

For glyexp_experiment input, returns a modified glyexp_experiment object. For matrix input, returns a filtered matrix.

See also

remove_low_var()