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All releases of Draco

  •  30 Oct 2009 21:35
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    Release Notes: Minor issues identified during the 1.4 Release Candidate testing period were eliminated. Issues relating to the user interface when an import/export plugin fails were corrected. MATLAB import now works with binary MATLAB files containing non-numeric data. MATLAB export functions with time-series data.

    •  16 Oct 2009 21:50
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      Release Notes: This release introduces import/export plugins, allowing users to develop scripts in JRuby to import from or export to any type of data file format. Included in this release are plugins to allow import and export of Microsoft Office Excel and MATLAB binary data files. The Probit and Logit regression code has undergone a complete overhaul, and their robustness has increased significantly after switching to an Apache Commons Math optimization engine.

      •  03 Apr 2009 22:36
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        Release Notes: The text editor now iconifies when a file is loaded. Median calculation has been fixed. Skewness and kurtosis calculations are now performed via Apache Commons Math routines. Vectors and matrices in plugins now support division by a scalar. There are minor UI improvements to the embedded text editor.

        •  18 Mar 2009 21:29
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          Release Notes: This release incorporates a new text editor component for plugin development using RSyntaxTextArea. It replaces the custom nonlinear least squares algorithm with more convergent Apache Commons Math routines. It implements a plugin wizard to aid in plugin development. Java Look and Feel is now user-definable. Help browser (HelpGUI) has been upgraded to better support opening external Web browsers on GNU/Linux and similar systems.

          •  09 Dec 2008 00:30
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            Release Notes: Unit tests have been added to ensure proper loading/saving of all possible worksheet components. Unexecuted plugins are no longer erroneously written to save files. Probit regressions are now loaded from dave files properly.

            •  03 Dec 2008 11:48
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              Release Notes: Major outstanding issues discovered during the testing of the first release candidate have been resolved. Specifically, plot rendering has been fixed, and cosmetic changes have been introduced to both histograms and scatter plots. Matrix conditioning issues in weighted least squares have been resolved. Nonlinear least squares regressions now function properly when null data is present. A bug related to saving and reloading of worksheets containing plugins has been fixed.

              •  22 Nov 2008 18:41
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                Release Notes: Probit Maximum Likelihood Estimator regression has been implemented. A new user preferences panel has been added, allowing for minor user interface changes and the specification of settings for the Draco plugin system. The plugin system has been further enhanced with the introduction of parallel matrix multiply operations for multiprocessor systems. The library used for loading and saving Draco worksheets has been upgraded, providing an order-of-magnitude decrease in file loading times. Minor outstanding bugs have been addressed from version 1.1.

                •  29 Sep 2008 02:01
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                  Release Notes: JRuby has been integrated into the software to provide a plugin system for quickly developing regression and analysis code. Weighted Least Squares regression is now included. GNU/Linux and Windows distributions now properly associate with Draco files. An RPM distribution is available.

                  •  26 Feb 2008 21:36
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                    Release Notes: This release fixes all remaining minor bugs related to plotting and command line file specification.

                    •  20 Feb 2008 18:29
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                      Release Notes: This release fixes some minor issues with saving worksheets on GNU/Linux, inversion of plot line/marker settings, and minor documentation updates.

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