On Fri, 23 Jan 2009, Allin Cottrell wrote: Since few people seem to read the Changelog, here's a "press release" summarising the main changes in the new version. Comments welcome. ------------------------------------------------------------------- Version 1.8.0 of gretl is out. Here is a list of the major changes with respect to 1.7.9: * New commands: - "intreg": interval (grouped data) regression - "modprint": makes it easy for script writers to format estimation output * New functions: - Add accessors $Fstat and $chisq for the overall F-statistic or chi-square test from the last model - mcovg(): matrix covariogram - mpols(): enables multiple-precision OLS for user-defined matrices - toepsolv(): solves a Toeplitz system of linear equations - urcpval(): gives user access to James MacKinnon's p-values for unit root and cointegration test statistics (tau) * Improved commands: - "nls" and "mle": New option --numeric to force the use of numerical derivatives - "fcast": allow variables for the startobs and endobs arguments; add "rolling" k-step-ahead option - OLS and fixed effects: add option to calculate p-value for the Durbin-Watson statistic - "restrict": now available for nls, mle and gmm - "loop": now more robust, more efficient and more general - "gnuplot": now works in loops (batch mode only) * Obsoleted commands: "rhodiff" and "hccm" * Switch to compact tabular form for presenting model statistics * Graphical User interface: - Add model menu item: "Modify model", under the Edit menu, provides a clone of the model specification - graph controller: new facility to add a line, defined via a formula, to an existing graph; - line-color selector: extend to 6 colors, and distinguish between setting the "palette" and setting ad hoc colors for a specific graph - Boxplots: hand the production of these over to gnuplot - relocate user-defined scalars from main window to the icon view window; - many other small improvements * Data filters - add importer for SPSS .sav files - CSV importer: try to handle time-series data in reverse chronological order * Computational engine: - Speed-ups for the pdf() function as applied to a series argument * Many, many bug fixes ------------------------------------------------------------------- Riccardo (Jack) Lucchetti Dipartimento di Economia Università Politecnica delle Marche r.lucchetti(a)univpm.it http://www.econ.univpm.it/lucchetti

On Fri, 23 Jan 2009, Allin Cottrell wrote: Thanks. This one should be somewhat better (research assistence by "cvs diff" is gratefully acknowledged). ------------------------------------------------------------------- Version 1.8.0 of gretl is out. Here is a list of the major changes with respect to 1.7.9. As usual, you can download the latest version of gretl from http://sourceforge.net/project/platformdownload.php?group_id=36234 USER EXPERIENCE --------------- * Switch to compact tabular form for presenting model statistics * Graphical User interface: - Add model menu item: "Modify model", under the Edit menu, provides a clone of the model specification - graph controller: new facility to add a line, defined via a formula, to an existing graph; - line-color selector: extend to 6 colors, and distinguish between setting the "palette" and setting ad hoc colors for a specific graph - Boxplots: hand the production of these over to gnuplot - relocate user-defined scalars from main window to the icon view window; - many other small improvements * Data filters - add importer for SPSS .sav files - CSV importer: try to handle time-series data in reverse chronological order * Many, many bug fixes COMMANDS AND FUNCTIONS ---------------------- * New commands: - "intreg": interval (grouped data) regression - "modprint": makes it easy for script writers to format estimation output * Improved commands: - "fcast": allow variables for the startobs and endobs arguments; add "rolling" k-step-ahead option - "gnuplot": now works in loops (batch mode only) - "loop": now more robust, more efficient and more general - "mle" and "nls": New option --numeric to force the use of numerical derivatives - "ols": add --jackknife option for robust standard errors and --anova for printing the ANOVA table - "ols" and "panel" (fixed effects): add option to calculate p-value for the Durbin-Watson statistic - "restrict": now available for nls, mle and gmm - "tsls": now offers the --liml and --gmm options as alternatives to two-stage least squares * Modified commands: - var: the matrices returned by the accessors $sigma and $vcv for VAR systems now have a degrees of freedom correction * Obsoleted commands: "rhodiff" and "hccm" * New functions: - Add accessors $Fstat and $chisq for the overall F-statistic or chi-square test from the last model - boxcox(): Box-Cox transformation - mcovg(): matrix covariogram - mpols(): enables multiple-precision OLS for user-defined matrices - toepsolv(): solves a Toeplitz system of linear equations - urcpval(): gives user access to James MacKinnon's p-values for unit root and cointegration test statistics (tau) * Improved functions: - mlag(): now handles multiple lags using a vector as the second argument - pdf(): Speed-ups when the function is applied to a series argument ------------------------------------------------------------------- Riccardo (Jack) Lucchetti Dipartimento di Economia Università Politecnica delle Marche r.lucchetti(a)univpm.it http://www.econ.univpm.it/lucchetti