Function reference

All functions

AdjSD()

Calculates standard deviation of bathymetry (a measure of rugosity) adjusted for slope

BPI()

Calculates Bathymetric Position Index

DMV()

Calculates Difference from Mean Value (DMV)

Qfit()

Calculates multiscale slope, aspect, curvature, and morphometric features using a local quadratic fit

RIE()

Calculates Roughness Index-Elevation

RelPos()

Calculates Relative Position of a focal cell

SAPA()

Calculates surface area to planar area rugosity

SlpAsp()

Multiscale Slope and Aspect

SurfaceArea()

Calculates surface area of a DTM

TPI()

Calculates Topographic Position Index

VRM()

Implementation of the Sappington et al., (2007) vector ruggedness measure

annulus_window()

Creates annulus focal window

circle_window()

Creates circular focal window

classify_features_ff()

Helper function factory to classify morphometric features

erupt()

Create georeferenced version of R's built in volcano dataset

explore_terrain()

Interactive Shiny app to look at terrain attributes

kmax()

Calculate max curvature

kmean()

Calculate mean curvature

kmin()

Calculate min curvature

knc()

Calculate normal contour curvature

kns()

Calculate normal slope line curvature

ku()

Calculate unsphericity curvature

outlier_filter()

Helper function to filter outliers from regression parameters using interquartile range

tgc()

Calculate contour geodesic torsion