sample_variables {phyloseq} | R Documentation

## Get the sample variables present in sample_data

### Description

This is a simple accessor function to make it more convenient to determine the sample variable names of a particular `phyloseq-class` object.

### Usage

    sample_variables(physeq, errorIfNULL=TRUE)

### Arguments

`physeq` | (Required). `sample_data-class`, or `phyloseq-class`.
`errorIfNULL` | (Optional). Logical. Should the accessor stop with an error if the slot is empty (`NULL`)? Default `TRUE`.

### Value

Character vector. The names of the variables in the sample_data data.frame. Essentially the column names. Useful for selecting model and graphics parameters that interact with sample_data.

### See Also

`get_taxa` `taxa_names` `sample_names`

### Examples

    data(enterotype)
    sample_variables(enterotype)

[Package phyloseq version 1.30.0 Index]