calcIV: calcIV

In NCRN/NPSForVeg: Data anaylsis and graphing for NPS forest vegetation monitoring.

calcIV

Description

| Calculates the Importance Value from three Site X Species data frames | One for abundance, one for basal area, one for presence-absence

Usage

calcIV(InCount, InSize, InPres)

Arguments

InCount	A data.frame which is a site x species matrix where each cell is the number of individuals of a given species in a given site
InSize	A data.frame like InCount except each cell is a measure of the size of the speices such as total basal area or total seedling height
InPres	a data.frame which is a presence absence matrix

Value

Returns a data.frame with the Importance Values for each species, the columns are "Species" with the name of each species, "Density" which is density IV, "Size" which is size IV, "Distribution" which is distribution IV and "Total" which is Density + Size +Distribution

NCRN/NPSForVeg documentation built on March 26, 2024, 7:13 a.m.