Earth Science Informatics

, Volume 8, Issue 4, pp 799–807 | Cite as

DisChart: a new application for building and drawing discrimination diagrams using digitize method

  • Sinan Akıska
Research Article


DisChart was developed to draw discrimination diagrams (e.g., tectonic discrimination diagrams, rock classification diagrams or phase diagrams) that are used in many disciplines, especially in the geosciences and environmental sciences. Unlike other software programs that include drawing discrimination diagrams, with DisChart, it is not necessary to know the exact coordinate values of discrimination lines. By the help of this program, the sketch graphic file is digitized and all data is stored in a binary file. After digitizing, the x and y values of the points added to the program via the data-entry screen are plotted on the digitized diagram. The program has its own data-entry screen and is also compatible with MS Excel files. DisChart is free and was developed using Microsoft Visual Basic .NET programming language. Although DisChart is designed for geoscientists, it can also be used in environmental sciences, chemistry, physics, mathematics, geography, engineering, economics, etc.


Discrimination Digitize Chart Phase diagram Excel Visual basic 



The author wishes to thank Hassan A. Babaie (Editor-in-Chief) and three reviewers (John S. Armstrong-Altrin and two anonymous reviewers) for their valuable comments and suggestions to improve the manuscript. Elif Akıska and Elaine Ambrose are thanked for proofreading and editing of the manuscript.


  1. Agrawal S (1999) Geochemical discrimination diagrams: a simple way of replacing eye-fitted boundaries with probability based classifier surfaces. J Geol Soc India 54:335–346Google Scholar
  2. Agrawal S, Guevara M, Verma SP (2004) Discriminant analysis applied to establish major-element field boundaries for tectonic varieties of basic rocks. Int Geol Rev 46:575–594CrossRefGoogle Scholar
  3. Armstrong-Altrin JS (2014) Evaluation of two multidimensional discrimination diagrams from beach and deep-sea sediments from the Gulf of Mexico and their application to Precambrian clastic sedimentary rocks. Int Geol Rev. doi: 10.1080/00206814.2014.936055 Google Scholar
  4. Armstrong-Altrin JS, Verma SP (2005) Critical evaluation of six tectonic setting discrimination diagrams using geochemical data of Neogene sediments from known tectonic settings. Sediment Geol 177:115–129CrossRefGoogle Scholar
  5. Bailey JC (1981) Geochemical criteria for refined tectonic discrimination of orogenic andesites. Chem Geol 32:139–154CrossRefGoogle Scholar
  6. Bhatia MR (1983) Plate tectonics and geochemical composition of sandstones. J Geol 91:611–627CrossRefGoogle Scholar
  7. Carr M (1995) IGPET. Software program. Terra Softa Inc, SomersetGoogle Scholar
  8. Clarke D (1993) NEWPET software program. Department of Earth Sciences, Memorial University of Newfoundland, St. JohnsGoogle Scholar
  9. Esawi EK (2009) TerCharts: a VBA-MS Excel multiternary and multipurpose charting utility for data analysis, presentation, and modeling in environmental and earth sciences. Environ Geol 57:111–117CrossRefGoogle Scholar
  10. Irvine TN, Baragar WRA (1971) A guide to the chemical classification of the common volcanic rocks. Can J Earth Sci 8:523–548CrossRefGoogle Scholar
  11. Janousek V, Farrow CM, Erban V (2006) Interpretation of whole-rock geochemical data in igneous geochemistry: introducing geochemical data toolkit (GCDkit). J Petrol 47:1255–1259CrossRefGoogle Scholar
  12. John T, Schenk V, Haase K, Scherer E, Tembo F (2003) Evidence for a Neoproterozoic ocean in south-central Africa from mid-oceanic-ridge-type geochemical signatures and pressure–temperature estimates of Zambian eclogites. Geology 31:243–246CrossRefGoogle Scholar
  13. John T, Scherer E, Schenk V, Herms P, Halama R, Garbe-Schönberg D (2010) Subducted seamounts in an eclogite-facies ophiolite sequence: the Andean Raspas Complex, SW Ecuador. Contrib Miner Petrol 159(2):265–284CrossRefGoogle Scholar
  14. MSDN (2014) Installing the. NET Framework 3.5 on Windows 8 or 8.1. Accessed 05.11.2014
  15. Petrelli M (2003) PetroGraph: a new software for the analysis and presentation of geochemical data. Geophys Res Abstr 5:06183Google Scholar
  16. Richard LR (1997) MinPet. Software program. MinPet Geological Software, GatineauGoogle Scholar
  17. Roser BP, Korsch RJ (1986) Determination of tectonic setting of sandstone-mudstone suites using SiO2 content and K2O/Na2O ratio. J Geol 94:635–650CrossRefGoogle Scholar
  18. Ryan KM, Williams DM (2007) Testing the reliability of discrimination diagrams for determining the tectonic depositional environment of ancient sedimentary basins. Chem Geol 242:103–125CrossRefGoogle Scholar
  19. Sheth HC (2008) Do major oxide tectonic discrimination diagrams work? Evaluating new log-ratio and discriminant-analysis-based diagrams with Indian Ocean mafic volcanics and Asian ophiolites. Terra Nova 20:229–236CrossRefGoogle Scholar
  20. Su Y, Langmuir CH, Asimow PD (2003) PetroPlot: a plotting and data management tool set for Microsoft excel. Geochem Geophys Geosyst (G3) 4(3):1030Google Scholar
  21. Verma SP, Armstrong-Altrin JS (2013) New multi-dimensional diagrams for tectonic discrimination of siliciclastic sediments and their application to Precambrian basins. Chem Geol 355:117–133CrossRefGoogle Scholar
  22. Verma SP, Rivera-Gómez MA (2013a) Computer programs for the classification and nomenclature of igneous rocks. Episodes 36(2):115–124Google Scholar
  23. Verma SP, Rivera-Gómez MA (2013b) New computer program TecD for tectonomagmatic discrimination from discriminant function diagrams for basic and ultrabasic magmas and its application to ancient rocks. J Iber Geol 39(1):167–179Google Scholar
  24. Verma SP, Torres-Alvarado IS, Sotelo-Rodriguez ZT (2002) SINCLAS: standard igneous norm and volcanic rock classification system. Comput Geosci 28(5):711–715CrossRefGoogle Scholar
  25. Wang XR, Ma WF, Gao S, Ke L (2008) GCDPlot: an extensible Microsoft excel VBA program for geochemical discrimination diagrams. Comput Geosci 34:1964–1969CrossRefGoogle Scholar
  26. Zhou JB, Li XH (2006) GeoPlot: an excel VBA program for geochemical data plotting. Comput Geosci 32:554–560CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Mühendislik Fakültesi, Jeoloji Mühendisliği BölümüAnkara ÜniversitesiTandoğanTurkey

Personalised recommendations