calcRiffle {biotic} | R Documentation |
Calculate Whalley 'Riffle' habitat-specific BMWP indices for invertebrate samples
Description
Calculates Whalley riffle-specific BMWP, ASPT and N-taxa indices for invertebrate samples.
Usage
calcRiffle(df, type = "num")
Arguments
df |
A dataframe containing list of taxa in first column, followed by columns of abundances with sample names in header row. |
type |
Indicates format of data. Options are "num" for numeric data, "log" for integer log abundance categories (1-5) or "alpha" for alphabetic abundance categories (A-E). Default value is "num". |
Value
A data frame consisting of columns of index values with samples in rows.
Examples
# calculate the Whalley Riffle BMWP indices for the Braid Burn dataset
# data are alphabetic log abundance categories, so type is "alpha"
calcRiffle(braidburn, "alpha")
[Package biotic version 0.1.2 Index]