Edlin Guerra-Castro, Juan Carlos Cajas, Juan Jose Cruz-Motta, Nuno Simoes and Maite Mascaro
SSP is an R package design to estimate sampling effort in studies of ecological communities based on the definition of pseudo-multivariate standard error (MultSE) (Anderson & Santana-Garcon 2015), simulation of data and resampling (Guerra-Castro et al., 2020).
SSP includes seven functions: assempar
for extrapolation of
assemblage parameters using pilot data; simdata
for simulation of
several data sets based on extrapolated parameters; datquality
for
evaluation of plausibility of simulated data; sampsd
for repeated
estimations of MultSE for different sampling designs in simulated data
sets; summary_sd
for summarizing the behavior of MultSE for each
sampling design across all simulated data sets, ioptimum
for
identification of the optimal sampling effort, and plot_ssp
to plot
sampling effort vs MultSE.
The SSP package will be available on CRAN but can be downloaded from github using the following commands:
## Packages needed to build SSP and vignettes
install.packages(pkgs = c('devtools', 'knitr', 'rmarkdown'))
library(devtools)
library(knitr)
library(rmarkdown)
## install the latest version of SSP from github
install_github('edlinguerra/SSP', build_vignettes = TRUE)
library(SSP)
For examples about how to use SSP, see help('SSP')
after
instalation.
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