circular.averaging: Circular Averaging based on Vector Averaging

In IhsanKhaliq/spatiotemporaldynamics: Spatiotemporal dynamics of chickpea ascochyta blight in chickpea

Description

circular.averaging calculates the average direction (0 - 360) given a vector of directions.

vector.averaging calculates the average distance and direction given a vector of directions and a vector of distances.

Usage

circular.averaging(direction, deg = TRUE)

vector.averaging(direction, distance, deg = TRUE)

Arguments

direction	a vector of directions given in degrees (0 - 360) if 'deg == TRUE' or in radians if 'deg == FALSE'
deg	a boolean object defining if 'direction' is in degrees ('TRUE') or radians ('FALSE')
distance	a vector of distances associated with each direction

Details

functions return 'NA' if the average distance or direction is not valid... e.g., when averaging directions of 0 & 180 degrees, the result could theoretically be 90 or 270 but is practically neither.

Value

circular.averaging returns the average direction while vector.averaging returns a list with 2 elements distance & direction

Note

This function was taken from the now archived, as of 08/03/2020, SDMtools.

Author(s)

Jeremy VanDerWal [e-mail] & Lorena Falconi [e-mail]

Examples

#EXAMPLE circular.averaging
circular.averaging(c(0,90,180,270)) #result is NA
circular.averaging(c(70,82,96,110,119,259))

#EXAMPLE vector.averaging
vector.averaging(c(10,20,70,78,108), distance=10)
vector.averaging(c(159,220,258,273,310),distance=runif(5))

IhsanKhaliq/spatiotemporaldynamics documentation built on July 21, 2021, 3:13 a.m.