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simba (version 0.3-1)

A Collection of functions for similarity analysis of vegetation data

Description

Besides a function for the calculation of similarity measures with binary data (for instance presence/absence species data) the package contains some simple wrapper functions for reshaping species lists into matrices and vice versa and some other functions for further processing of similarity data (Mantel-like permutation procedures) as well as some other useful stuff.

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Version

Install

install.packages('simba')

Monthly Downloads

9

Version

0.3-1

License

GPL (>= 2)

Maintainer

Gerald Jurasinski

Last Published

July 25th, 2010

Functions in simba (0.3-1)

plot.mrpp

plot an mrpp-object
pcol

Permuted Correlation (on strata)
sim.yo

Calculate a binary similarity index you define.
com.sim

Compare mean similarity between subsets of data
diffmean

Calculate the difference in Mean between two vectors
symbol.size

Little helper function to obtain bubble plots with simple plot and points methods
simbadocs

Display Package Documentation
makead

Create artificial data set (species matrix).
rin

Calculate multiple plot resemblance measures
mama

A (convenience) wrapper function to make matrix from a data.frame
direct

Obtain Direction Classes from Geographic Coordinates
bb2num

Transform Braun-Blanquet scale data to percentage cover values and vice versa
diffmich

Calculate the difference in parameters of a Michaelis-Menten kinetik fitted to (PAM) data
aslopect

Calculate similarity of plots based on slope aspect and inclination
simba-internal

Internal functions of the package simba that are usually not called (or only implicitly) by the user
hexgrid

Produces the nodes of an equidistant grid.
ads.ternaries

Artificial data-set for studying the mathematical behavior of asymmetric similarity coefficients
dist.tmp

Calculate the distance between the instances or variables of two similar data-sets.
simba-package

Calculate similarity measures for binary data
sim

Calculate similarities for binary vegetation data
liste

Convert dist-objects and matrices to database format
diffslope

Calculate the difference in slope or intercept of two regression lines
bcoov

Calculate Bray-Curtis distance for only one variable
occ.time

Track species occurrence
sim.tmp

Calculate binary similarity in time
dfcor

Calculate permuted (Mantel) correlations between one and many variables
auc

Calculate the area under a line(curve).
abis

Vegetation and environmental data recorded in a Tundra ecosystem in Northern Sweden (Southeast of Abisko).
boxes

An adaption of boxplot.n.