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Remove Variables with Low Variance Remove Variables with Low Variance

remove_low_var.Rd

Filters variables whose variance falls below a threshold. Default behavior is to remove variables with zero variance.

Usage

remove_low_var(x, var_cutoff = 0, by = NULL, strict = FALSE)

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

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

# Default S3 method
remove_low_var(x, var_cutoff = 0, by = NULL, strict = FALSE)

Arguments

x

Either a glyexp_experiment object or a matrix.

var_cutoff

The cutoff for variance. Defaults to 0.

by

A factor specifying the groupings. Defaults to NULL.

strict

If FALSE, remove a variable only if it passes the variance threshold in all groups. If TRUE, remove a variable if it passes the variance 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_cv(), remove_constant()