steepness (version 0.1)

getStp: Hierarchy's steepness based on Dij -Stp-

Description

Function to obtain hierarchy's steepness measure based on dyadic dominance indices by means of the observed sociomatrix.

Usage

getStp(X)

Arguments

X

Original sociomatrix.

Value

• getStp
  Steepness measure based on dyadic dominance indices corrected for chance.

Details

getStp is the absolute value of the slope of the best-fitted line between the normalized David's scores and the rank dominance in a decreasing order. The regression is obtained by Ordinary Least Squares method.

References

de Vries, H., Stevens, J. M. G., & Vervaecke, H. (2006). Measuring and testing the steepness of dominance hierarchies. Animal Behaviour, 71, 585-592.

See Also

getDij, getNormDS.

Examples

X <- matrix(c(0, 1, 2, 1, 0, 1, 3, 1, 0),nrow=3,byrow=TRUE)