Gretl 1.8.7 - Changelog

What's new in Gretl 1.8.7:

March 4th, 2010

· GUI enhancement: add apparatus to help keep track of gretl windows
· GUI menus: clean-up and consolidation
· New command: "qqplot" (Quantile-Quantile plots)
· Normal random samples: implement the Ziggurat method
· "dataset" command: document the "clear" keyword
· "rmplot" command: save $test and $pvalue
· "restrict" with --bootstrap option: record $test and $pvalue
· "corrgm" and "xcorrgm": allow the lag order to be given as a named scalar variable
· VECMs: add $ec accessor
· VARs: remove $vcv accessor
· VARs and VECMs: enable accessors $df, $ncoeff and $xtxinv
· BFGSmax function: add facility for supplying analytical derivatives
· Eviews data importer: handle more cases of .wf1 files
· BFGS: make the degree of verbosity tunable via "set bfgs_verbskip"
· Fix bug: crash on error in user_matrix_ols()
· Fix bug: "append" for data should work in more cases
· Fix bug: saving a model when there is already a saved model of the same name (in the GUI) caused a crash
· Fix bug: setting of sub-sample information on models estimated with a loop construct
· Fix bug: the GUI option for reporting standardized residuals for GARCH models got broken
· Fix bug: handling of on-the-fly matrices in "printf"
· Fix bugs: miscellaneous small GUI bugs
· Fix bugs 2918790, 2918783, 2918775, 2917053

What's new in Gretl 1.8.0:

March 27th, 2009

· Fix bug: crash in "Add random variable" dialog
· Translation fixes
· Add new command: "modprint"
· Remove obsolete commands: "rhodiff" and "hccm"
· Speed-ups for the pdf() function as applied to a series argument
· New option --numeric for the nls and mle commands, to force the use of numerical derivatives
· Numerous small graphing and GUI fixes
· MS Windows: fix for opening graphs in old session files
· Graphs: "display PDF" option: fix possible encoding issue
· GUI graph controller: new facility to add a line, defined via a formula, to an existing graph
· GUI graph controller: add facility to choose point style
· Gnuplot line-color selector: extend to 6 colors, and distinguish between setting the "palette" and setting ad hoc colors for a specific graph
· Scalars: make these accessible via the icon view window; enable copying to clipboard as CSV; enable entry of a formula (starting with "=") in scalar-editing window
· Fix encoding issue when copying to clipboard as plain text or RTF
· Boxplots: hand the production of these over to gnuplot
· New function: urcpval(), gives user access to James MacKinnon's p-values for unit root and cointegration test statistics (tau)
· New function: mpols(), enables multiple-precision OLS for user-defined matrices
· New function: toepsolv(), solves a Toeplitz system of linear equations
· New function: mcovg(), matrix covariogram
· Improve error-reporting in relation to GUI genr dialog
· Make parsing of input from GUI ARMA dialog more robust
· New feature: add importer for SPSS .sav files
· CSV importer: try to handle time-series data in reverse chronological order
· "fcast": allow variables for the startobs and endobs arguments; add "rolling" k-step-ahead option
· Fix bug in ADF --verbose printout (wrong p-value shown for one lagged difference in some cases)
· GUI plot editor: translate the gnuplot style strings
· Switch to more compact tabular form for presenting model statistics
· OLS and fixed effects: add option to calculate p-value for the Durbin-Watson statistic
· Add accessors $Fstat and $chisq for the overall F-statistic or chi-square test from the last model
· Make the "restrict" command available for nls, mle and gmm
· Improve forecasting options for nls models
· Add model menu item: "Modify model", under the Edit menu, provides a clone of the model specification
· Loops: allow the "gnuplot" command, operating strictly in batch mode
· New command "intreg": implements interval regression
· Several updates to the documentation
· Fix bugs 2042328, 2472732, 2510727, 2510759