Graphical Statistical Analysis Tool

Version 1.0.3 (804 KB) by Lorenzo Cappelli
The GSAT allows to identify and separate the different lognormal populations that contribute to a natural distribution of geochemical data.
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Updated 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://uk.mathworks.com/matlabcentral/fileexchange/122017-graphical-statistical-analysis-tool), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2021a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Acknowledgements

Inspired by: Avoid file overwrite

GSAT_ProbabilityPlots_v1.0.3

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