Miscellaneous Functions for Environmental Analyses
envalysis is an R package containing miscellaneous functions for data
analysis in environmental chemistry and ecotoxicology. Provides, for example,
calibration() to calculate calibration curves and corresponding limits of
detection (LODs) and limits of quantification (LOQs) according to German DIN
32645 (2008). texture() makes it easy to estimate soil particle size
distributions from hydrometer measurements (ASTM D422-63, 2007). Some functions
of the package require ggplot2 or drc.
The following functions are available:
- Calculating limits of detection
lod()and limits of quantificationloq()as part of the'calibration'class to produce linear calibration curves in accordance with German DIN 32645 (2008); see vignette for details - Calculating concentrations from calibration curves using
inv_predict() - Finding optimum weights for weighted calibrations using
weight_select() - Estimating matrix effects (signal suppression/enhancement) with
matrix_effect() - Determining particle size distributions and soil texture classes (DIN/USDA)
measured with a soil hydrometer in accordance with ASTM D422-63 (2007) using
texture(); see vignette for details - Confidence intervals
CI(), standard errorsse(), and root mean square errorsrmse() - Various sorption isotherms
sorption()
- Categorize water drop penetration times according to Bisdom et al. (1993)
with
bisdom() - Report significant figures, namely round means and errors to the least
significant digit, using
signifig() - Clean, black-and-white ggplot2 theme for scientific publications
theme_publish(); a preview is available here
envalysis is available on CRAN and GitHub.
You can install the released version of envalysis from CRAN with:
install.packages("envalysis")To install the development version of this package, paste the following code into your R console (requires devtools):
if(!require(devtools)) install.packages("devtools")
devtools::install_github("zsteinmetz/envalysis")