Start an HTTP server in R to serve static files, or dynamic
    documents that can be converted to HTML files (e.g., R Markdown) under a
    given directory.

Tools to compute and analyze the set of statistically-equivalent (Gaussian, linear) path models which generate the input precision or (partial) correlation matrix. 
             This procedure is useful for understanding how statistical network models such as the Gaussian Graphical Model (GGM) perform as causal discovery tools. 
             The statistical-equivalence set of a given GGM expresses the uncertainty we have about the sign, size and direction of directed relationships based on the weights matrix of the GGM alone. 
             The derivation of the equivalence set and its use for understanding GGMs as causal discovery tools is described by Ryan, O., Bringmann, L.F., & Schuurman, N.K. (2022) <doi: 10.31234/osf.io/ryg69>.

Randomization of presence/absence species distribution raster
    data with or without including spatial structure for calculating
    standardized effect sizes and testing null hypothesis. The
    randomization algorithms are based on classical algorithms for
    matrices (Gotelli 2000, <doi:10.2307/177478>) implemented for raster
    data.

Provides tools for checking whether an R session is in a clean state,
    including the global environment, attached packages, loaded namespaces,
    attached environments, session run time, R options, locale settings, and
    system environment variables. Intended as a safer replacement for the
    common 'rm(list = ls())' idiom: rather than silently wiping the global
    environment, sessioncheck() surfaces problems so the user can make an
    informed decision.

Query and print information about the current R session.  It
    is similar to 'utils::sessionInfo()', but includes more information
    about packages, and where they were installed from.

Setaria viridis (green foxtail) is a common weed.  This
    package contains measurements from individual branches of a wild
    Setaria viridis plant collected near the author's home.  The data is
    intended for use in data analysis practice.