OxCal is a widely used software for calibrating radiocarbon dates and statistical analysis of 14C data. It aims to make statistical methods accessible to researchers and students across various disciplines. Recent and planned developments include more flexible prior probability definitions, more robust statistical models, and improved data presentation approaches.
Recent additions to OxCal include more flexible prior probability definitions, allowing for a variety of distributions such as Poisson and log-normal. These allow for more accurate modeling of parameters in chronological models. Additionally, OxCal now supports trapezium-based phase models, which allow for gradual transitions between phases, providing more flexibility in modeling. Another development is variable rigidity for Poisson-process modeling, allowing for more accurate modeling of sedimentary sequences by adjusting the k parameter based on data.
OxCal also includes new commands for handling covariance information, enabling the extraction of covariance matrices and correlation coefficients between parameters. This helps in understanding the relationships between different parameters in the model.
In terms of data presentation, OxCal now supports scalable vector graphics (SVG) for visualizing data, with online tools for conversion to PDF and PNG formats. It also includes a mapping package that allows the output of the program to be presented on maps, acting as a rudimentary geographic information system (GIS). This functionality allows for the spatial representation of data, though it is not a spatial model itself.
The software is also being developed to present data on different timescales, where there is some defined relationship. This allows for the presentation of information on the timescale of a particular record, related to the IntCal timescale.
OxCal continues to be central to research at the University of Oxford, with a focus on making the software freely accessible and open-source. The user interface is already open-source, and the intention is to make the entire source code open-access (GNU GPLv3) so that it can be compiled on different platforms and further developed by others.OxCal is a widely used software for calibrating radiocarbon dates and statistical analysis of 14C data. It aims to make statistical methods accessible to researchers and students across various disciplines. Recent and planned developments include more flexible prior probability definitions, more robust statistical models, and improved data presentation approaches.
Recent additions to OxCal include more flexible prior probability definitions, allowing for a variety of distributions such as Poisson and log-normal. These allow for more accurate modeling of parameters in chronological models. Additionally, OxCal now supports trapezium-based phase models, which allow for gradual transitions between phases, providing more flexibility in modeling. Another development is variable rigidity for Poisson-process modeling, allowing for more accurate modeling of sedimentary sequences by adjusting the k parameter based on data.
OxCal also includes new commands for handling covariance information, enabling the extraction of covariance matrices and correlation coefficients between parameters. This helps in understanding the relationships between different parameters in the model.
In terms of data presentation, OxCal now supports scalable vector graphics (SVG) for visualizing data, with online tools for conversion to PDF and PNG formats. It also includes a mapping package that allows the output of the program to be presented on maps, acting as a rudimentary geographic information system (GIS). This functionality allows for the spatial representation of data, though it is not a spatial model itself.
The software is also being developed to present data on different timescales, where there is some defined relationship. This allows for the presentation of information on the timescale of a particular record, related to the IntCal timescale.
OxCal continues to be central to research at the University of Oxford, with a focus on making the software freely accessible and open-source. The user interface is already open-source, and the intention is to make the entire source code open-access (GNU GPLv3) so that it can be compiled on different platforms and further developed by others.