Gradistat - V 91 Link

Click the macro-enabled calculation buttons provided on the spreadsheet. The software will instantly process the geometric, logarithmic, and arithmetic statistics.

Instead of forcing researchers to write complex code or purchase expensive proprietary software, GRADISTAT leverages the ubiquitous environment of Excel. It accepts raw data from standard physical sieving, laser granulometry, or pipette analysis, and automatically outputs a comprehensive suite of statistical parameters, charts, and physical descriptions. Key Features of GRADISTAT Version 9.1

Ensure your data is formatted as either the weight of sediment retained on individual sieves (sieve apertures measured in micrometers or phi units) or as percentage volumes from a laser sizer.

It computes statistics in both metric units (microns/millimetres) and logarithmic φ (phi) units . gradistat v 91 link

GRADISTAT remains a cornerstone tool for sedimentologists and environmental scientists, providing a fast, reliable method for calculating grain size statistics. While version 8.0 is the officially available release, version 9.1 is widely referenced in academic literature, suggesting that it is a later, unofficial version used by many researchers.

In geomorphology, civil engineering, and sedimentology, raw data collected from a physical sieve stack or an automated laser diffraction instrument is dense and unorganized. Manually plotting cumulative frequency curves and deriving mathematical moments for dozens of samples is incredibly time-consuming.

Right-click the file, select , check the Unblock safety box at the bottom of the General tab, and click Apply. Click the macro-enabled calculation buttons provided on the

GRADISTAT processes mass or percentage data retained within specific size intervals. It bypasses manual, error-prone graphical calculations by computing foundational sedimentological metrics instantly:

It can process large datasets of particle size distributions in a short time.

Gradistat is a Microsoft Excel-based program that calculates particle size statistics. It takes raw data (usually from sieving or laser diffraction) and converts it into standard sedimentological parameters. It accepts raw data from standard physical sieving,

Because GRADISTAT is freeware distributed for academic and professional use, it does not have a centralized, commercial app store presence. When searching for a , it is vital to source the file safely to avoid malware or corrupted spreadsheets. Official and Academic Sources

Input the (optional, useful if tracking pan loss). 3. Populating Granulometric Ranges

For modern data analysis, it performs arithmetic and geometric calculations in metric units alongside logarithmic calculations in phi ( ) units using the mathematical . 3. Textural Classification

While version 9.1 is a common and stable release, it is helpful to be aware of other versions. The primary developer, Simon Blott, has released several iterations over the years.