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envalysis: Miscellaneous Functions for Environmental Analyses

Steinmetz, Zacharias; Albert, Julius; Kenngott, Kilian

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.

 

New features

  • Finding optimum weights for weighted calibrations using weight_select()
  • Calculating matrix effects (signal suppression/enhancement) with matrix_effect()
  • calibration() now checks for model assumptions

Minor improvements

  • Additional "blanks" parameter introduced to calibration(), lod(), and loq()
  • Snapshot testing
  • Improved and more consistent documentation

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