emon (version 1.3)

Tools for Environmental and Ecological Survey Design

Description

Statistical tools for environmental and ecological surveys. Simulation-based power and precision analysis; detection probabilities from different survey designs; visual fast count estimation.

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Version

Install

install.packages('emon')

Monthly Downloads

558

Version

1.3

License

GPL-3

Maintainer

Jon Barry

Last Published

September 22nd, 2016

Functions in emon (1.3)

expected.nb

Expected value of Visual Fast Count Estimator assuming Negative Binomial distribution for counts

GVFC

Calculates the raw Visual Fast Count (VFC) estimator of the mean abundance per transect

is.wholenumber

To check whether an argument is an integer

GVFCMOM

Function to calculate the method of moments visual fast count estimator

addnoise

Creates random errors for use in power.trend.

expected.pois

Expected value of Visual Fast Count Estimator assuming Poisson distribution for counts

emon-package

Tools for environmental and ecological survey design and analysis

fS.detect

Used in the function detect

generate.trend

Generates a set of mean values.

fT.detect

Used in function detect

permute.BACI

Does non-parametric randomisation test for the interaction term in a BACI design.

mom.min.nb

Minimising function for VFC MOM estimator assuming Negative Binomial counts.

mannkendall.stat

Mann-Kendall statistic.

n.min

Minimising function used in precision.

mom.min.pois

Minimising function for VFC MOM estimator assuming Poisson counts.

size2.samevar

Calculates negative binomial size to preserve constant variance.

power.trend

Calculates power by simulation to detect a specified trend.

permute.groups

Does randomisation test for the difference in means of two vectors v1 and v2.

power.groups

Power for comparing mean of two groups

power.BACI

Calculates power for a Before and After Control Impact (BACI) design.