Description
The Area and Time Under and Above the Curve (ATAUC) is a comprehensive analytical tool designed to evaluate ruminal pH measurements collected from indwelling sensors. The program processes and analyzes time-series pH data while allowing users to define multiple threshold limits relevant to biological or management objectives. It generates detailed visualizations of ruminal pH evolution over time and computes statistical summaries—including means, standard deviations, and minimum and maximum values—for pH measurements both above and below user-specified thresholds. In addition, ATAUC supports multiple classification variables, enabling grouped analyses across animals, treatments, or experimental conditions.
The ATAUC is specifically designed to manage complex sensor deployments within individual animals. It handles data from multiple sensors installed sequentially or concurrently and implements advanced smoothing transitions between consecutive sensors to avoid artificial discontinuities in the pH signal. The program allows pH values to be adjusted over configurable time windows, expressed in days, for both preceding and subsequent sensors. Sensor-specific averages and adjustment factors are calculated to ensure continuity and biological plausibility in long-term ruminal pH monitoring.
The software provides flexible analysis options to accommodate diverse experimental designs and data structures. Users can select among multiple interpolation methods, including linear, spline, and Hyman approaches, as well as several spline formulations such as FMM, natural, periodic, and monotonic (monoH.FC). Plotting parameters are fully customizable, allowing control over symbol types, symbol sizes, and figure dimensions. The program also offers polygon-based visualizations of pH variation and permits adjustment of daily hour limits to focus analyses on specific periods of interest when ruminal pH conditions are most critical.
ATAUC includes robust data-handling capabilities to streamline workflow and ensure reproducibility. Data can be imported directly from Excel files in both .xls and .xlsx formats, with support for multiple worksheets within a single file. Analysis settings can be saved and reused in subsequent sessions, facilitating consistent application of thresholds and parameters across datasets. Results can be exported to CSV files for downstream statistical analysis, and the program generates comprehensive text-based reports containing detailed descriptive statistics.
The output and reporting features of ATAUC are designed to support both exploratory analysis and formal reporting. The software creates detailed visualizations of ruminal pH trends over time, calculates trend lines, and quantifies both the area and time spent above and below defined pH thresholds. Summary statistics are produced for all analyzed periods and grouping variables, and results can be exported in multiple formats for integration into reports, presentations, or further analytical pipelines.
The ATAUC provides a user-friendly graphical interface that enables researchers to rigorously analyze ruminal pH data while accounting for the complexities associated with multiple sensor deployments, temporal variation in measurements, and biologically meaningful threshold-based interpretations.
Download
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It uses R! |
Visual Studio 2022 |
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32 bit and 64 bit Compatible |
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The ATAUC software is programmed with the Microsoft Visual Studio 2012 using Visual Basic and .NET 4.0 framework (click here to download .NET 4.0 framework). It uses R scripting v. 4.x or later technology (Click here to download R) to perform calculations, nonlinear convergence, and high-quality graphic production. It workswith most IBM-PC compatible computers that have Microsoft Windows 8 or later. |
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The current version of the Area and Time Above and Under the Curve is Loading...
Previous versions can be downloaded from here.
Registration
The ATAUC will expires after 10 trial uses if it is not registered by the end of the grace period. You may register your copy by submitting the license number on the Register webpage. If applicable, registration codes are issued only after the full registration fee has been paid on the Purchase webpage.
Developers
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Dr. Luis O. Tedeschi
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Support
The following list summarizes corrections, enhancements, and functional improvements made to the software, presented in chronological order (newest to oldest). Each entry reflects updates implemented to improve stability, usability, and overall performance.
There are no corrections, enhancements, or functional improvements to report at this time. However, several related documents, manuscripts, and reports are listed on the Publications web page.
Links
This section will be updated with relevant links as they are identified and curated for this model.