SiteExploitationTerritories: Site Exploitation Territories

In eScienceCenter/SiteExploitationTerritories: SiteExploitationTerritories

Description

SiteExploitationTerritories calculates non-isotropic spatial relationship by integrating human energy expenditure in terrain based estimations. The function is based on Technical Note 3: "Distance relationships or does distance matter – calculating a non-isotropic spatial relationship by integrating human energy expenditure in terrain based estimations – A seamless workflow for defining archaeological Site Exploitation Territories (SET) using the open source (geo-)statistical language R" by Jan Johannes Ahlrichs, Philipp Gries and Karsten Schmidt; see: http://www.uni-tuebingen.de/index.php?eID=tx_nawsecuredl&u=0&g=0&t=1499250113&hash=af99ce857ef61c6df5a2b70a907cf91473fa6deb&file=fileadmin/Uni_Tuebingen/SFB/SFB_1070/dokumente/technical_notes/technical_notes_3/CRC1070_2016_Technical_Note_03_SET.pdf

Usage

SiteExploitationTerritories(pts, dem, slope = NULL, epsg,
  TheoreticalSlopes = seq(-70, 70, 1), numberOfNeighbors = 8,
  damping = FALSE, dampingFactor = 16, numberOfDirections = 8,
  timeOfInterest = 2, numberOfIsochrones = 2, intervallOfIsochrones = 1)

Arguments

pts	Points
dem	DEM
slope	slope raster
epsg	EPSG
TheoreticalSlopes	a sequence
numberOfNeighbors	an integer, only if no SLOPE input raster available, select algorithm to calculate slope: 4 == 4 neighbours, smooth surfaces, Fleming and Hoffer (1979), Ritter (1987) (see raster package terrain); 8 == 8 neighbours, rough surfaces, Horn (1981) (see raster package terrain)
damping	TRUE/FALSE; damp hiking speed if slope is steeper than the dampingFactor (slope in degrees)
dampingFactor	Damping Factor
numberOfDirections	Number of Directions; move cases for transition layer; select move case for calculating time-cost; cell connections, directions for transition: 4 == 4 directions, Rook case; 8 == 8 directions, Queen case; 16 == 16 directions, knight move
timeOfInterest	Time interval of interest; select a time interval of interest; use integer > 0
numberOfIsochrones	Select a number and interval of isochrones output; number of isochrones [hours], integer
intervallOfIsochrones	Intervals of insochrones [hours], numeric

Value

returns a list containing for each Site a list of the Accumulated Cost Surface and Isochrones; call by using variable[[a]][[b]], while a == 1 for the first site and b == 1 for rAccumulatedCostSurface.h and b == 2 for vContourLines

eScienceCenter/SiteExploitationTerritories documentation built on May 25, 2019, 4:27 p.m.