Gradistat V 91 Link May 2026

is a widely used Microsoft Excel-based program designed for the rapid analysis of grain size statistics from unconsolidated sediments. It was originally developed by Simon J. Blott and Kenneth Pye. Core Functionality

The software automates the calculation of essential sedimentological parameters from raw data obtained through techniques like sieving or laser granulometry: Statistical Measures

: It calculates mean, mode, sorting (standard deviation), skewness, and kurtosis. Calculation Methods : Statistics are computed using both the Method of Moments (arithmetic and geometric) and the Folk and Ward (1957) graphical methods. Data Scales

: Supports results in both metric (micrometers/millimeters) and logarithmic (phi) units. Graphical Outputs

: Generates frequency plots, cumulative distribution curves, and ternary diagrams for sediment classification. Versions & Compatibility Version 8.0

: Released in 2010, this version was optimized for Microsoft Excel up to the 2010 version. Version 9.1

: While "v9.1" is often cited in academic datasets and research papers for grain size analysis, official legacy downloads typically point back to the Kenneth Pye Associates Ltd (KPAL) software page GRADISTAT-PRO

: A fully revised version with expanded functionality has been noted as under development by the original authors. Alternative Tools

Due to compatibility challenges with newer versions of Excel, some researchers utilize the

package in R, which was built as an evolution of the GRADISTAT macro. It provides similar descriptive statistics and can be accessed via a web-based interface for those unfamiliar with R coding. Official Links Software Homepage KPAL Gradistat Academic Reference Blott and Pye (2001) Paper into the Excel macro?

The GRADISTAT v 9.1 software is a widely used Microsoft Excel-based program for grain size distribution and statistical analysis of unconsolidated sediments. It is primarily designed to handle data from standard measuring techniques like sieving and laser granulometry. Download and Access

Direct Link: You can find official information and potential download access through the Kenneth Pye Associates Ltd website.

Alternative Versions: Historical versions, such as v 8.0, are sometimes available on academic repositories like Zenodo. Interesting Feature: Versatile Statistical Calculation

A standout feature of GRADISTAT is its ability to calculate statistical parameters using multiple methods simultaneously, allowing for robust comparison of compositionally variable sediments.

Dual Calculation Methods: It calculates mean, mode, sorting, and skewness using both arithmetic/geometric (metric units) and logarithmic (phi units) methods.

Folk and Ward Integration: It applies the classic Folk and Ward graphical methods to modern digital data, which researchers consider a highly robust basis for routine comparisons.

Graphical Outputs: The program automatically generates a range of essential visuals, including frequency plots and ternary plots, directly within the Excel interface.

Method Comparison: It uniquely assigns Folk and Ward descriptive terms to moment statistics, bridging the gap between different analytical frameworks. GRADISTAT v 8.0 - Zenodo

GRADISTAT v9.1 is a specialized Microsoft Excel-based software program used primarily in sedimentology and geomorphology for the rapid analysis of grain size statistics. Originally developed by Simon Blott and Kenneth Pye, it streamlines the classification of sedimentary environments by calculating key distribution parameters from raw measurement data. Overview of Capabilities

The program is designed to handle data from standard measuring techniques such as mechanical sieving, laser granulometry, and Coulter counters.

Statistical Calculations: It provides rapid calculation (roughly 50 samples per hour) of mean, mode, sorting, and skewness.

Methodologies: Statistics are calculated using both the Folk and Ward (1957) graphical method and the moment method.

Units of Measurement: Results are produced arithmetically and geometrically in metric units ( ) and logarithmically in phi (

Visual Output: The software automatically generates frequency plots, cumulative distribution curves, and ternary plots for classifying sediment texture. Access and Availability

While the program was originally released for older versions of Excel (1997-2000), it has been updated over the years to maintain compatibility with modern spreadsheet environments.

Official Source: The software is maintained by Kenneth Pye Associates Ltd, where the standard version can typically be downloaded. gradistat v 91 link

Research Repositories: Datasets and analysis examples using GRADISTAT v9.1 are often hosted on academic sharing platforms like Figshare.

Documentation: Users can find detailed data input guides and manuals on platforms like Scribd to assist with sample preparation and data entry. Scientific Applications

GRADISTAT is a standard tool in paleoenvironmental reconstruction and coastal studies. Recent research (as of 2024) has utilized v9.1 for documenting lithological changes in Greenland core sediments and comparing laboratory-based particle size analysis techniques.

GRADISTAT Version 9.1 is an Excel-based program developed by Kenneth Pye Associates Ltd for rapid grain size analysis, utilizing both the Method of Moments and Folk and Ward (1957) methods to process laser granulometer and sieve data. Although version 9.1 is cited in recent literature, the primary developer site frequently lists version 8.0 for download. For more details, visit Kenneth Pye Associates Ltd Kenneth Pye Associates Ltd

Gradistat v 9.1 is a software tool used for statistical analysis and data processing. The software provides users with a comprehensive set of tools for data analysis, visualization, and reporting. With Gradistat v 9.1, users can perform various statistical tests, create charts and graphs, and generate reports.

The software is widely used in various fields, including social sciences, business, and healthcare, for data analysis and research purposes. Gradistat v 9.1 offers a user-friendly interface, making it easy for users to navigate and perform statistical analysis.

Some of the key features of Gradistat v 9.1 include:

Data visualization tools
Statistical tests and analysis
Report generation
Data import and export options

If you're looking for a Gradistat v 9.1 link, you may be able to find it on the official website of the software provider or through online repositories that offer software downloads. However, ensure that you download the software from a reputable source to avoid any potential security risks.

Would you like to know more about Gradistat v 9.1 or is there something specific you'd like to know?

GRADISTAT Version 9.1, developed by Blott and Pye, is a widely utilized Microsoft Excel macro for rapid, automated grain size statistical analysis, including calculation of mean, sorting, skewness, and kurtosis. The tool offers high reliability for sedimentary data classification using both Folk and Ward (1957) and Method of Moments, producing graphical outputs directly within Excel. Access detailed research on GRADISTAT applications at ResearchGate ResearchGate

GRADISTAT is a widely used Microsoft Excel-based program for grain size analysis and statistical calculations in sedimentology and geomorphology. Acquiring GRADISTAT

Official distribution is handled by Kenneth Pye Associates Ltd (KPAL). While older versions (v4 to v8) are commonly available, "v9.1" often refers to internal or specific site-modified versions, as the main public sequence progressed from v8.0 directly toward GRADISTAT-PRO.

Official Downloads: The standard stable versions can be found on the KPAL GRADISTAT Software Page.

Alternative (R-based): For users seeking more modern automation beyond Excel, the G2Sd package on CRAN is an evolution of the GRADISTAT v4.0 macro. Getting Started Guide 1. Data Preparation

Input Types: The program accepts weights from sieving or percentages from laser granulometers.

Format: Open the .xlsm file and navigate to the "Single Sample Data Input" or "Multiple Sample Data Input" sheet.

Aperture Sizes: Enter sieve/bin sizes in column B (either ascending or descending). Ensure they are consistent across all samples in a batch. 2. Entering Sample Information

Fill in the green cells above each sample with the sample identity, analyst name, and date.

Pan/Fine Material: If you have material in a pan (fines), enter its weight at a class size of zero or leave it blank. The program typically assumes these are larger than ) for calculation purposes. 3. Calculating Statistics

Click the "Calculate Statistics" button. The macro may take several minutes if processing a large batch (up to 250 samples). Output Metrics: GRADISTAT will automatically generate: Mean, Mode, and Sorting (Standard Deviation). Skewness and Kurtosis. Folk and Ward (1957) graphical measures. Physical descriptions (e.g., "Very coarse sand"). 4. Visualizing Results

Check the "Multiple Sample Statistics" sheet for a summary of all processed data.

The program generates frequency distribution curves, cumulative plots, and ternary (triangular) diagrams to classify sediment texture. Quick Troubleshooting

Macros Disabled: Since GRADISTAT relies on VBA, ensure you "Enable Content" when Excel opens the file.

Weight Warnings: If the sum of class weights exceeds the "Initial Sample Weight," GRADISTAT will trigger a warning; verify your data entry in column C.

Sieve Intervals: For the most accurate Folk and Ward calculations, use sieve intervals of at least whole phi ( GRADISTAT software - Kenneth Pye Associates Ltd is a widely used Microsoft Excel-based program designed

GRADISTAT is a widely used Microsoft Excel-based software package designed for the rapid analysis of grain size distribution and statistics.

While users often search for a "v 9.1" link, the most recent stable release from the official developer, Kenneth Pye Associates Ltd (KPAL), is actually Version 8.0. Mentions of version 9.1 in search results typically refer to other statistical software (like STATISTICA 9.1) rather than the GRADISTAT grain size package. 📥 Official Access & Download

The official source for the software is the Kenneth Pye Associates (KPAL) website.

Version 8.0 (Latest Stable): Released in 2010, it is compatible with Microsoft Excel versions up to 2010. You can download the .xls or .xlsm versions directly from the KPAL software page.

GRADISTAT-PRO: A fully revised version with expanded functionality is currently under development by the original authors.

Alternative Source: A version of the tool is also hosted on the Zenodo repository for academic citation. GRADISTAT software - Kenneth Pye Associates Ltd

GRADISTAT v9.1: The Professional Choice for Grain Size Analysis

If you are a geomorphologist or sedimentologist, you know that calculating statistics for hundreds of samples is a grueling task. For over two decades, GRADISTAT has been the reliable standard for rapid grain size distribution analysis. The software has now reached Version 9.1 (June 2020), offering the most up-to-date stability for modern sedimentological research. ⬇️ Download GRADISTAT v9.1

You can find the official version and supporting documentation through Kenneth Pye Associates Ltd (KPAL). This version remains a favorite in the field because it is free and integrates directly into Microsoft Excel, allowing for a seamless transition from raw data to professional charts. Key Features of the v9.1 Update

While original versions were tailored for older Excel environments, the latest iterations ensure compatibility with current systems:

Comprehensive Statistics: Calculates mean, mode, sorting, skewness, and kurtosis using both the Folk and Ward (1957) graphical methods and moment methods.

Multiple Input Support: Processes data from standard sieving, laser granulometry, X-ray sedigraphs, or Coulter counters.

Textural Classification: Automatically assigns samples to one of 15 textural groups defined by gravel, sand, and mud percentages.

High Efficiency: Capable of processing approximately 50 samples per hour, providing both tabular summaries and graphical outputs like frequency histograms. How to Use GRADISTAT for Your Research

Data Entry: Use the "Multiple Sample Data Input" sheet to enter sieve apertures or laser bins. Apertures can be in ascending or descending order.

Sample Info: Input your weights or percentages. The program supports up to 230 rows of data.

Calculation: Click the "Calculate Statistics" button. The program will generate a full summary on the "Multiple Sample Statistics" sheet.

Visuals: Access the "Gravel Sand Mud" and "Sand Silt Clay" sheets for automatically generated triangular diagrams and cumulative distribution plots.

Whether you are studying coastal sediment dynamics or atmospheric dust provenance, GRADISTAT v9.1 remains an essential tool for turning raw measurements into meaningful scientific data.

The official link for GRADISTAT Version 9.1 is available through the K. Pye Associates downloads page

. This software, originally developed by Simon Blott and Kenneth Pye, is widely used in sedimentology for rapid grain size statistics and analysis using Microsoft Excel. Social Media Post Template

Headline: Master Your Grain Size Analysis with GRADISTAT v9.1! 📊⛰️

Are you a geologist, geographer, or environmental scientist tired of manual sediment calculations? 🌍 GRADISTAT v9.1

remains the industry standard for processing grain size data with precision and speed. Why use GRADISTAT? Fast Processing : Handles sieve and laser granulometry data in seconds. Comprehensive Stats

: Automatically calculates Mean, Sorting, Skewness, and Kurtosis using both Folk & Ward and Moment methods. Visual Ready If you're looking for a Gradistat v 9

: Generates high-quality grain size distribution curves and ternary diagrams for your reports. Excel Integrated

: Works directly within Microsoft Excel for a familiar, powerful workflow. Where to Download:

Get the latest version (v9.1) directly from the official source at K. Pye Associates Check out the original research paper by Blott and Pye (2001) to see the methodology behind the calculations!

#Sedimentology #Geology #GrainSize #GRADISTAT #EarthScience #DataAnalysis #ResearchTools of the version 9.1 updates or a step-by-step guide on how to import your data?

GRADISTAT is a widely utilized grain size distribution and statistics software package specifically designed for the analysis of unconsolidated sediments. Originally developed by Simon Blott and Kenneth Pye, the program serves as an essential tool for researchers in geomorphology, sedimentology, and coastal management. What is GRADISTAT?

GRADISTAT is a Microsoft Excel-based macro program that provides rapid calculation of grain size statistics from standard measuring techniques like sieving and laser granulometry. It is capable of processing approximately 50 samples per hour, making it far more efficient than manual calculation methods. Key Features and Capabilities

Comprehensive Statistical Analysis: Calculates mean, mode, sorting, skewness, and kurtosis.

Multiple Calculation Methods: Supports both the Folk and Ward (1957) graphical method and the method of moments.

Versatile Output: Generates results arithmetically, geometrically (in metric units), and logarithmically (in phi units).

Graphical Representation: Produces high-quality frequency plots, cumulative distribution curves, and ternary diagrams (trigons).

Data Integration: Can merge data from different sources, such as laser diffraction and traditional sieving, into a single combined distribution. Where to Find the GRADISTAT Link

The official source for GRADISTAT is Kenneth Pye Associates Ltd (KPAL). While some third-party sites may reference "Gradistat V 9.1," the most reliably documented and widely used versions available through the official developer are Version 8.0 and the original release.

Official Download Page: You can find the software and full instructions on the KPAL GRADISTAT Software page .

Excel Versions: The software is typically provided in .xls (for Excel 2000-2003) and .xlsm (for Excel 2007-2010 and later) formats.

Scientific Reference: For academic purposes, the software is cited as: Blott, S.J. and Pye, K. (2001) GRADISTAT: a grain size distribution and statistics package for the analysis of unconsolidated sediments. Earth Surface Processes and 1248. Practical Applications

GRADISTAT is heavily used in environmental and geological studies to classify sedimentary environments. For example, it has been used to: Analyze coastal samples to identify liquefaction features.

Assess sediment distribution for coastal erosion and flood risk mitigation.

Study stream energy and erosion-deposition sequences in river courses. GRADISTAT software - Kenneth Pye Associates Ltd

Because "Gradistat" is not a cloud-based software but rather a protected Excel workbook (typically .xlsm or .xls), there is no public "browser link" to access it directly. It must be downloaded and opened in Microsoft Excel.

Here is a post looking at the details, how to access it, and why it remains a standard in geology and sedimentology.

A User’s Guide to GRADISTAT (Excel Macro Version)

The Evolution: From Gradistat 4.0 to Gradistat v 9.1

Before we hunt for the link, we must understand what "v 91" signifies. The software went through several iterations:

Version 4.0 (Early 2000s): Basic functionality, limited to 2000 data points.
Version 6.0: Introduction of graphical plots and the “Method of Moments” statistics.
Version 8.0 (2010): Major overhaul, supporting up to 16,000 data points and adding log-probability plots.
Version 9.1 (2015-2018): The definitive edition. This version fixed critical bugs present in v9.0, improved the speed of macro execution, and added compatibility for 64-bit versions of Microsoft Excel (albeit with manual registry tweaks).

Why is version 9.1 the holy grail? Because it was the final public release before CCAP transitioned to a commercial product (Gradistat Pro). The "v 91" link is sought after because v9.1 requires no license key, has no expiration date, and works as a standalone Excel add-in.

Troubleshooting the "Gradistat v 91" Macro Errors

If you have the link but the software won't run, you are likely facing the "Compile Error: Can't find project or library" bug. This happens because Gradistat v 9.1 references older MS Office Object Libraries.

The Fix:

Open the VBA editor (Alt + F11).
Click Tools > References.
You will see a checkmark next to "MISSING: Microsoft Excel 14.0 Object Library" (or similar).
Uncheck the missing one and scroll down to find your current version (e.g., "Microsoft Excel 16.0 Object Library").
Press OK and save the workbook.