Data Manipulation and Simple Calculations

  • Vojtěch Janoušek
  • Jean-François Moyen
  • Hervé Martin
  • Vojtěch Erban
  • Colin Farrow
Chapter

Abstract

This chapter will demonstrate the practical use of the R language (for overview of its syntax, see Appendix A) and GCDkit (Appendix B) to solve common problems in igneous geochemistry. We shall follow the basic procedure from loading the data into the system, through their subsetting, calculation of basic indexes (such as mg# or A/CNK values) or cationic parameters (after Niggli, Debon & Le Fort and De la Roche), to normative recalculations (e.g., CIPW norm). Briefly mentioned are also statistical applications of the R language, such as obtaining simple descriptive statistics and use of factors-based grouping to deal with complex geochemical data sets.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Vojtěch Janoušek
    • 1
  • Jean-François Moyen
    • 2
  • Hervé Martin
    • 3
  • Vojtěch Erban
    • 1
  • Colin Farrow
    • 4
  1. 1.Czech Geological SurveyPragueCzech Republic
  2. 2.Université Jean-MonnetSaint-EtienneFrance
  3. 3.Université Blaise-PascalClermont-FerrandFrance
  4. 4.GlasgowScotland

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