Simple Fisheries Stock Assessment Methods
Adds zeros for catches of species not collected in some sampling event...
Compute and view possible differences between paired sets of ages.
Compute measures of precision among sets of ages.
Proportions-at-age from an age-length key
Use an age-length key to assign age to individuals in the unaged sampl...
Mean Values-at-age from an age-length key
Plots to visualize age-length keys.
Confidence intervals for binomial probability of success.
Associated S3 methods for bootstrap results from car::Boot.
Capitalizes the first letter of first or all words in a string.
Convert between capture history data.frame formats.
Summarize capture histories in individual fish format.
Mortality estimates from the descending limb of a catch curve.
Computes Chapman-Robson estimates of S and Z.
Converts an R color to RGB (red/green/blue) including a transparency (...
Computes the Leslie or DeLury population estimate from catch and effor...
Dunn's Kruskal-Wallis Multiple Comparisons.
Repeat individual fish data (including lengths) from tallied counts.
Expands a length frequency based on a subsample.
Likelihood ratio and extra sum-of-squares tests.
Converts "numeric" factor levels to numeric values.
Opens web pages associated with the fishR website.
DEFUNCT functions.
Internal functions.
Fisheries stock assessment methods and data.
Calculates the geometric mean or geometric standard deviation.
Creates a function for a specific parameterization of the von Bertalan...
Shows rows from the head and tail of a data frame or matrix.
Creates separate histograms by levels.
Create a histogram from a frequency table.
Confidence interval for population size (N) in hypergeometric distribu...
Determine if a number is odd or even.
Specific utilities for use in a knitr document.
Kolmogorov-Smirnov Tests.
Ratio of lagged observations.
Constructs length class/category variable.
Constructs the correction-factor used when back-transforming log-trans...
Constructs plots of predicted weights at given lengths among different...
Estimate natural mortality from a variety of empirical methods.
Estimate initial population size for single or multiple census mark-re...
Jolly-Seber analysis from multiple mark-recapture events from an open ...
Associated S3 methods for nlsBoot from nlstools.
Adds model fits from nls iterations to active plot.
Peek into (show a subset of) a data frame or matrix.
Computes the percentage of values in a vector less than or greater tha...
Construct traditional (Campana-like) age-bias plots.
Confidence interval for Poisson counts.
Creates a vector of Gabelhouse lengths for each species in an entire d...
Convenience function for calculating PSD-X and PSD X-Y values.
Compute confidence intervals for PSD-X and PSD X-Y values.
Length-frequency histogram with Gabelhouse lengths highlighted.
Finds Gabelhouse lengths (for PSD calculations) for a species.
Computes the prior to or reverse cumulative sum of a vector.
Population estimates for k-, 3-, or 2-pass removal data.
Find non-repeated consecutive rows in a data.frame.
Extract the coefficient of determination from a linear model object.
The four-parameter growth function from Schnute (1981).
The five-parameter growth function from Schnute and Richards (1990).
Computes standard error of the mean.
Creates a function for a specific parameterization of a common stock-r...
Finds reasonable starting values for parameters in specific parameteri...
Summary statistics for a numeric variable.
Creates a one- or two-way table of summary statistics.
Construct a base tic-tac-toe plot for presenting predator-prey PSD val...
Finds the number of valid (non-NA) values in a vector.
Find reasonable starting values for a von Bertalanffy growth function.
Computes a vector of relative weights specific to a species in an enti...
Finds standard weight equation coefficients for a particular species.
A variety of simple fish stock assessment methods.