Tools for Environmental and Ecological Survey Design
Does randomisation test for the difference in means of two vectors `v1...
Calculates power for a Before and After Control Impact (BACI) design.
Power for comparing mean of two groups
Calculates power by simulation to detect a specified trend.
Sample size for given precision or precision for given sample size
Calculates negative binomial size to preserve constant variance.
Creates random errors for use in power.trend.
Probability of detecting a feature that covers a proportion theta of...
Probability of circular patch detection
Tools for environmental and ecological survey design and analysis
Expected value of Visual Fast Count Estimator assuming Negative Binomi...
Expected value of Visual Fast Count Estimator assuming Poisson distrib...
Used in the function detect
Used in function detect
Generates a set of mean values.
Calculates the raw Visual Fast Count (VFC) estimator of the mean abund...
Function to calculate the method of moments visual fast count estimato...
To check whether an argument is an integer
Mann-kendall test for trend
Mann-Kendall statistic.
Minimising function for VFC MOM estimator assuming Negative Binomial c...
Minimising function for VFC MOM estimator assuming Poisson counts.
Minimising function used in precision.
Does non-parametric randomisation test for the interaction term in a B...
Calculates empirical semi-variogram.
Statistical tools for environmental and ecological surveys. Simulation-based power and precision analysis; detection probabilities from different survey designs; visual fast count estimation.