SpecificArealOverlap: Specific areal overlap

In herrmannrobert/VerDi: Modelling the vertical distribution of aquatic organisms

Description

Function calculates fraction of areas occupied by one population on areas occupied by another population.

Usage

SpecificArealOverlap(data, col = 1)

Arguments

data	matrix or data frame including two colums - one for each population's distribution.
col	numeric integer indicating the column in which the species if interest in given, Default = 1.

Details

The specific areal overlap is defined as the area occupied by both populations devided by the area occupied by one of these populations.

Examples

#Example shows water column occupied by clupeid fish and cod

df <- data.frame(Clupeids = c(0,1,1,1,1,0),
                      Cod = c(0,0,0,1,1,1))

#Calculating specific areal overlap for clupeids and cod, respectively

clu <- SpecificArealOverlap(df, col = 1) * 100
cod <- SpecificArealOverlap(df, col = 2) * 100

paste(clu, "% of the water layers occupied by clupeid fish are also occupied by cod.", sep = "")
paste(cod, "% of the water layers occupied by cod are also occupied by clupeid fish.", sep = "")

herrmannrobert/VerDi documentation built on June 10, 2019, 7:32 a.m.