spatialsegregation (version 2.40)

biomassF: Individual Species Area Relationship

Description

Compute the biomass around individuals points. WARNING: Still under development. Please contant me if you want to use this.

Usage

biomassF(X, r=NULL, target=NULL, v2=FALSE, ...)

Arguments

X

Multitype point pattern of class ppp (see package 'spatstat'). The biomass (e.g. size) is to be in an element $mass.

r

Vector of sizes for neighbourhoods, e.g. geometric graph with different ranges.

target

Default NULL. Calculate only for target type. If NULL compute mean over all types.

v2

Logical. Return the average biomass instead of just sum.

...

Further parameters for the function segregationFun.

Value

Returns an fv-object, see spatstat for more information.

Details

Computes the neighbourhood for each point and then sums up the biomass in that neighbourhood.

References

Rajala, Illian: A family of spatial biodiversity measures based on graphs, Env. Ecol. Stat. 2012