obs_richness {OTUtable}

Observed Richness

Description

Calculates observed richness on a single column of relative abundance data.

Usage

obs_richness(sample)

Arguments

sample

A vector of relative abundance data, typically a single column in a matrix

Value

Returns a single number indicating the number of taxa in the tested sample

Note

Use apply functions to calculate richness for all samples in a matrix

Author(s)

Alexandra Linz <[e-mail]>

Examples

 data(otu_table)
 richness <- apply(otu_table, 2, obs_richness)