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 quantification
loq()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
- Finding optimum weights for weighted calibrations using
- Estimating matrix effects (signal suppression/enhancement) with
- 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 errors
se(), and root mean square errors
- Various sorption isotherms
- Categorize water drop penetration times according to Bisdom et al. (1993) with
- Report significant figures, namely round means and errors to the least significant digit, using
- 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: