Skip to contents

Add alpha diversity measure

Source: R/adders_samples.R
add_alpha.Rd

add_alpha() adds an alpha diversity measures to the sample table of a tidytacos object.

Usage

add_alpha(ta, method = "invsimpson")

Arguments

ta

A tidytacos object.

method

The diversity measure to use, see vegan::diversity() for further information on these.

Value

A tidytacos object with the alpha diversity measure added.

Details

This function can add different alpha diversity measures to the sample table, specified by the method argument. The following methods are available:

  • invsimpson: Inverse Simpson index

  • shannon: Shannon index

  • simpson: Simpson index

  • pielou: Pielou's evenness index

  • obs: Observed richness

  • s.chao1: Chao1 richness estimator

  • s.ace: ACE richness estimator

Examples

# Initiate counts matrix
x <- matrix(
  c(1500, 1300, 280, 356),
  ncol = 2
)
rownames(x) <- c("taxon1", "taxon2")
colnames(x) <- c("sample1", "sample2")

# Convert to tidytacos object
data <- create_tidytacos(x,
  taxa_are_columns = FALSE
)

# Add alpha diversity measures
data <- data %>%
  add_alpha()

data <- data %>%
  add_alpha(method = "shannon")