Graphical Statistical Analysis Tool

The GSAT allows to identify and separate the different lognormal populations that contribute to a natural distribution of geochemical data.

Version 1.0.3 (804 KB)
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16 Mar 2023

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The Graphical Statistical Analysis Tool (GSAT) allows to easily identify and separate the different lognormal populations that contribute to a natural distribution (measured) of a geochemical dataset. The code is based on the graphical method described by Sinclair (1974) which uses probability plots. It can be used for different kinds of geochemical data (assuming a natural lognormal distribution of populations), but particularly is designed for diffuse soil CO2 fluxes for which total areal emissions can be computed.

Cite As

Lorenzo Cappelli (2026). Graphical Statistical Analysis Tool (https://in.mathworks.com/matlabcentral/fileexchange/122017-graphical-statistical-analysis-tool), MATLAB Central File Exchange. Retrieved .

Acknowledgements

Inspired by: Avoid file overwrite

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
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Version Published Release Notes
1.0.3

The new release allows importing the fitting limits for populations and the model from previous files or modifying them directly from the proper popup window.

1.0.2

Fixed file name error. Enlarged font and markers in plots. Allowed automatic uploading of fit limits from previous result files.
1.0.1

The code has been optimized for four population distributions.
1.0.0