Changes to package FrF2 The package is still under development. Suggestions and bug reports are very welcome. Versopm 1.0-1, 17/11/2009 - clarified in the explanation of the catalogue file that the resolution III designs constructed for 64 and 128 runs are in fact minimum aberration (which was only conjectured before) - bug fix for function DanielPlot.design: the function did not work for large numbers of factors Version 1.0, 08/10/2009 - added methods for class design for the plotting functions MEPlot, IAPlot and DanielPlot - added the MA resolution III designs for 64 runs (33 to 63 factors) and 128 runs (65 to 127 factors) to the design catalogue catlg (strictly speaking, it is only proven that these have the same number of length three and length four words as the MA designs) - improved documentation of generators option for FrF2 - removed unnecessary warning from FrF2 in case of more than 19 generators Version 0.97-10, 17/09/2009 - changed a link to DoE.base-package to work on Mac-OS Version 0.97-9, 14/09/2009 - made factor names in FrF2 and pb valid names using make.names, also block.name in FrF2 Version 0.97-8, 07/09/2009 - made function FrF2 output factors also for full factorial 2-level designs without center points and documented coding of experimental factors for functions FrF2 and pb (thanks to Enrico Pegoraro for reporting this inconsistency) - fixed a bug in function pb's treatment of unnamed lists as factor.names - added a few links to manuals Version 0.97-7, 24/08/2009 - made functions FrF2 and pb tolerate factor.names to be an unnamed list - bug fix: resolution option for FrF2 did not return a full factorial, if no smaller design of the desired resolution exists - documentation bug fix: value section for function FrF2 did not mention the design.info elements map, clear and res3 for designs created with option estimable Version 0.97-6, 21/08/2009 - bug fix: generators.from.design did not work for replications in case of designs with the estimable option - bug fix: check rejected some valid linear models with only complete aliases due to numerical inaccuracies Version 0.97-5, 21/08/2009 - developed find.gen and generators.from.design to support generation of ccd designs (including estimable and blocked designs) Version 0.97-4 21/08/2009 - bug fix: FrF2 always randomized designs when using the estimable option, even for randomize=FALSE Version 0.97-3 20/08/2009 - changed itemize to describe in Rd files for pb and CatalogueAccessors in order to comply with new R CMD check behavior Version 0.97-2 19/08/2009 - blocked designs: added the element block.gen to the design.info attribute in order to support subsequent augmentation with star points - added error message for missing ncenter for add.center - added meaningful error message for failure for full factorials to fold.design - removed warning about all center points together, if ncenter=1 - made internal function des.recode identical to same function in package DoE.base, in order to later drop it from FrF2 - bugfix: names (not values) from factor.names were ignored in some important situations for blocked designs (automatic factor selection, small case, i.e. where blockpick is used) - added experimental and as yet undocumented internal functions for extracting all relevant generators from designs especially where these are not obvious (find.gen and generators.from.design) Version 0.97-1 16/08/2009 - bug fix: folding and center points did not work for full factorial 2-level designs Version 0.97 13/08/2009 - added function fold.design for foldover designs - added functions add.center for adding center points and iscube for identfying the cube points in a design with center points - added functionality for center points to functions FrF2 and pb - function aliases has gained the new argument condense that makes its output very similar to that of internal function alias3fi in combination with code=TRUE - moved into the direction of unified representation of aliased element in design.info (still not the same for all types of design, particularly not for blocked designs) - modified nfactors in design.info for blocked designs to refer to treatment factors only (ntreat kept for continuity) - added keyword internal to help files for internal functions - bug fix: added nfactors to design.info for split-plot designs - bug fix: generators element of design.info was labelled wrongly for more than 50 factors (NA labels for factors 51 and following) Version 0.96-1 03/08/2009 - added meaningful error message for IAPlot in case of no 2-factor interactions - adjusted test output to new version of DoE.base - bugfix for MacOS: replaced log2(nruns) with rounded version for print.catlg, because otherwise wrong result on MacOS Version 0.96 31/07/2009 - changed R version to R-2.8.0 or newer (extractor for class design does not work with earlier versions) - added dependence to R version 2.7.1 or newer - a few clarifications in documentation - added legend element to element aliased in design.info for FrF2 designs - made seed occur on all design.info objects for function FrF2 - added nfactors to design.info objects for blocked designs - made repeat.only FALSE even if user made it TRUE for between block replications only, where in fact there are no repeated measurements - bugfix:designs with 20 or more generators did not work in function FrF2 Version 0.95, 13/07/2009 - included Bobby Mees very comprehensive new book into the references - included design 3-1.1 (cf. program in FrF2-devel) into catlg in support of future implementation of inner/outer array designs - included possibility to select factors for which interactions are to be plotted in IAPlot (was already available in MEPlot) - all experimental factors are now R factors in the data frame, even if their levels are numerical values Bugfixes: - provided meaningful error message for internal function formula2matrix, if user specified the formula for estimable in an inappropriate way - pb design with 8 runs and <=4 factors now effectively is the FrF2 design, with all FrF2 properties, as was already documented before. Version 0.94-1, 06/07/2009 Bugfix: Replicated blocks had the same block number or name in case of bbreps. This is unreasonable and has been changed; with the changed version, the blocking variable can be directly used in a (mixed) linear model analysis. Version 0.94, 28/06/2009 - added element creator to design.info attribute of designs created by functions FrF2 and pb, and documented objects accordingly; this element contains the call, but is called creator to allow it also to include stored menu settings instead - added possibility to have negative generators (e.g. -ABD or -c(1,2,4)) (before, levels had to be swapped) - improved usage comfort and documentation for split plot designs in function FrF2 (with WPfacs, specification of nfac.WP is no longer necessary; the documentation of this aspect has been confusing and has been improved) - started decoupling statistical and technical information in the documentation; purpose of this: shorter individual help texts and the possibility to re-use the statistical texts for help from within R-commander in future package RcmdrPlugin.DoE - a few further improvements to the documentation have been made - modified function remodel to allow numeric variables with two levels not equal to -1 and 1 - improvement of MEPlot: user can select effects to be displayed (option select) (a similar possibility for IAPlot is not in place yet; so far, the model has to be reduced in order to select effects for IAPlot) Bugfix: function DanielPlot gave error message in case of non-significant effects only Version 0.93, 24/05/2009 - The constant Letters and some functions have been moved to new package DoE.base, in preparation of the collaborating package group of FrF2, DoE.base, DoE.wrapper and RcmdrPlugin.DoE. - documentation of factor.names in UtilitiesCat.Rd has been corrected (not user-relevant, as affected function estimable.check is not to be called directly by users) - removed unnecessary suggests for BHH2 Version 0.92-5, 18/05/2009 Bugfixes - simultaneous specification of nfactors and nlevels of length > 1 did not work in internal function fac.design; this was not relevant for FrF2, but nevertheless wrong - estimable did not work with a formula using factor names rather than factor letters; this has been fixed, and an example with this feature has been added - catalogue catlg currently contains only one design each for large resolution V+ situations (256 runs and more). The documentation of this aspect has been corrected. - deleted wrong statement in the documentation, that the complete catalogue of 128 run resolution IV designs with up to 24 factors is downloadable from the authors website (it is simply too large and could not be uploaded) Version 0.92-4, 15/05/2009 Bugfixes and small changes regarding row numbering - third column of run.order for blocked designs was wrong - added original row number of design to columns 1 and 3 of run.order in case of blocked and split-plot designs - row numbers of design itself and attribute desnum unified to always be the numbering from 1 to number of rows (i.e. second column of attribute run.order) regardless of design Version 0.92-2, 07/05/2009 Bug fixes - blockpick.big displayed wrong information about which effects are aliased with blocks; corrected; this bug only affected direct use of function blockpick.big and did not affect any automatic calculations within FrF2, alias information in design.info attribute was always correct. - replication information attached to run order also for full factorial designs and Plackett-Burman designs (functions fac.design (used by FrF2) and pb) - corrected documentation of class design and functions pb and FrF2 regarding the run.order attribute of class design output (from 2-column matrix to 3-column data frame with third column including replication information) Version 0.92-1, 01/05/2009 Bug fixes - hard to change factor number equal to nfactors gave indexing error; prevented by error message, since this does not make sense anyway - hard to change order was not the intended one --> changed Version 0.92, 30/04/2009 Substantial additions to function FrF2: - split-plot and blocking facilities including also functions splitpick, blockpick, blockpick.big and leftadjust that investigate the structure of designs and may be useful for expert users - treatment of hard-to-change factors Further changes to function FrF2 and its output: - made output object (class design) more informative - row numbers of design reflect replication structure - option select.catlg moved to an earlier position, and made effective for more scenarios than before Additions to catalogues and catalogue utilities: - added print method for objects of class catlg in support of inspecting available catalogue entries - extended standard catalogue catlg by some good larger designs Improvements to further utility functions: - added accessor functions for class design - added contrast contr.FrF2 for -1/+1 contrasts in line with 2-level fractional factorials - made character vectors in class design data frames from package FrF2 into factors with contrasts contr.FrF2 - made internal function alias3fi capable of handling more than 50 factors Bug fixes to documentation and error messages added examples and test cases (tests directory) far too many changes to be all mentioned in detail Version 0.91-1, 15/04/2009 Bug fix in documentation to function FrF2 Version 0.91, 06/04/2009 Additions to function FrF2: - added functionality for "estimable", i.e. automated search for designs that accommodate certain 2-factor interactions (2fis) well (two approaches) - added possibility of replications and repeated measurements - added more design information to output of FrF2 and changed output from list to data frame with attributes of new class design - FrF2 now also can do full factorials - renamed option max.nclear.2fis to MaxC2 (often used in the literature) Additions to function pb: - added possibility of replications and repeated measurements Further changes: - modified function alias3fi (non-exported function) to allow allow reducing detail to order=2 - renamed catlg elements around clear 2fis to read "clear" and not "free", accessor functions analogously - grouped R-utility functions in files according to same pattern as in Rd files - changed output of pb also to data frame with attributes of class design - extensions and clarifications for documentation - switched to FrF2, if pb is called for nruns=8 and nfactors<=4 Bug fixes: - FrF2 code had gen instead of generators in two places - pb had a bug that prevented design generation for those numbers of runs for which doubling is used (40, 56,64,88,96) Version 0.9-1, 24/03/2009 A few minor bug fixes: - Changed R version the package depends on to 2.7.0 (packages BsMD and scatterplot3d require this version), and added LazyLoad: yes and LazyData: yes to DESCRIPTION file - tried to fix example error for Mac: round instead of floor in check for nruns in FrF2, also changed check for nruns in pb - Bug fix on WLP.catlg, free.2fis.catlg and all.2fis.free.catlg: now always return a named list, even if the catlg object has only one element - minor clarifications in documentation Version 0.9, 11/03/2009 Added functionality for creating designs: FrF2 and pb create regular and non-regular fractional factorials with 2-level factors, together with a number of utility functions. Version 0.8, 16/02/2008 added function for cube plots for showing means or fitted means for three-way-interactions corrected bugs in documentation: plot functions MEPlot and IAPlot do not take ... argument, and they were wrongly referenced by their early development names "iap" and "mep" in a few places line width (lwd) choosable in MEPlot and IAPlot (affects plot lines and axis thickness) title size of individual plots (cex.main) choosable in MEPlot legend in diagonal panels of interaction plot matrix (IAPlot) improved alias numbers in interaction plots (in case of show.alias=TRUE) sized by cex.lab right outer margin slightly increased for making outer border visible in copied figures Version 0.7, 16/12/2007 Bug-fix: functions DanielPlot and IAPlot did not work with aov objects but only with pure lm-objects. This has been fixed by letting the internal function remodel transform aov objects into pure lm objects. Version 0.6, 16/12/2007 Eliminated portability issue with example: Version 0.5 used windows() for opening several graphics devices. First version on CRAN: Version 0.5, 15/12/2007