Click on individual sample tabs to view the graphical plots. The frequency curve highlights whether your sample is unimodal, bimodal, or polymodal. The cumulative curve shows where specific sample percentiles fall.
: As an Excel template, it allows users to input weight or percentage data from sieving or laser granulometry directly into a spreadsheet format. Useful Resources for Version 9.1
For sedimentologists, geologists, and environmental scientists, accurately analyzing sediment grain size is crucial. One of the most enduring, versatile, and widely used tools in this field is . Originally developed by Simon Blott and Kenneth Pye, this software simplifies the complex calculations required to interpret particle size distributions from sieving or laser diffraction data.
The program takes raw data—such as sieve weights or laser granulometer volume percentages—and automatically calculates key sedimentological parameters. These include mean, sorting, skewness, and kurtosis, utilizing both the and the method of moments . Key Features of GRADISTAT v9.1 gradistat v 91 free
This happens when running Gradistat on a 64-bit version of Excel using code written for older 32-bit environments. Ensure you are using the verified Version 9.1 update, which includes updated variable declarations designed to handle modern 64-bit Excel architectures.
The program enables the rapid processing of samples—averaging approximately —calculating complex statistics that would otherwise be laborious to perform manually. 2. Key Statistical Capabilities
Download the GRADISTAT spreadsheet ( .xlsm for modern Excel or .xls for older versions). Click on individual sample tabs to view the graphical plots
Excel must have "Enable All Macros" or "Digitally Signed Macros" toggled on, as the entire calculation engine relies on background scripts. Step-by-Step Installation Guide
The free version runs as a standalone executable – no complex setup, registry changes, or dependencies.
) scale , which simplifies statistical calculations for geologists. 3. Automated Sediment Classification : As an Excel template, it allows users
The primary source often offers the latest accessible versions.
Whether you are looking for a reliable calculation package or specifically looking for a way to use , this article covers how the program works, its statistical foundations, and step-by-step implementation. What is GRADISTAT and Why is it Essential?
To access Gradistat V 9.1 for free, follow these steps:
If the program does not calculate, check your Excel trust settings. Go to File > Options > Trust Center > Trust Center Settings > Macro Settings and select "Enable VBA macros".