is an Excel-based program designed for the rapid analysis of grain size statistics. It’s built to handle data from standard measuring techniques like: (manual weight retention) Laser Granulometry (percentage detected in size classes) X-ray Sedigraph Coulter counters Key Features and "Hot" Capabilities
GRADISTAT V 9.1 is the latest iteration of the widely utilized particle size analysis software package, primarily designed for geomorphologists and sedimentologists. Initially developed by and Professor Kenneth Pye in 2001, this tool has become a standard in environmental research for analyzing unconsolidated sediments. Core Functionality
Enter . Developed by Simon J. Blott and Kenneth Pye of the University of London, Gradistat was originally a Microsoft Excel add-in. It automated the complex logarithmic calculations required by the Folk and Ward (1957) graphical method and the moment method.
While the original 2001 release was designed for Excel 97 and 2000, the software has seen several updates to maintain compatibility with modern operating systems and spreadsheet versions:
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