If you discover a new bug please do let us know - go to our bug report form

MLwiN 3.13

11-October-24

Improve speed of text colouring in the macro editor
Avoid running unnecessary commands in the "split" window
Refresh level selection drop-down in the variance window if the level identifiers or their column name changes
Avoid calling command to rename columns if the name would not change
Only invalidate current MCMC model if the estimation setting change would require re-running adapting/burnin
Fix behaviour of the recently opened macro list
Add command for setting the current working directory
Fix bug preventing CAR models from running correctly, present since v3.09
Avoid potential crash when setting factor output columns via the UI
Reduce the number of commands generated by the system by only issuing them if the resulting value would change
Update on-line help for LINK command to match the actual behaviour
Improve argument checking and error messages for LINK command
Exclude more reserved columns when looking for empty columns
Ensure (R)IGLS variable transformations are always undone at the end of the iteration for discrete models, and no longer use groups to store these
Reduce the number of lines used in the "groups" window to the size of the largest group
Don't highlight estimates in green when switching to (R)IGLS estimation and the last results come from an MCMC run
Don't label MCMC deviance as (R)IGLS deviance before after switching away from MCMC but before the model is run
Fix potential out-of-bound error in character-plotted graph commands
Update shapelib to version 1.6.1
Run macro directly from the macro editor, instead of writing to a temporary file, if it hasn't changed since loading
Monitor macro file changes outside the application and offer to reload if they change
Highlight the current line in macro if it is paused by the user
Allow closing macro editor windows while a macro is running, except where it contains the initial macro
Improve macro monitor after the first RESUme
Always display location of macro error if a command fails
Avoid potential crash if clearing the prediction grid due to one of its columns being deleted
Fix cases where the UI might not be fully updated after an ABORt command
Correctly highlight lines in the macro editor if only selected lines are run
Update prediction information in the back-end as each individual parameter is changed
Avoid crash in prediction window if parameter position in random part does not match the full variable list
Remove some unnecessary event-related work
Correct potential out-of-bounds error when fetching multivariate predictor information
Allow adding predictors to single-response multivariate models
Do not allow interaction with other windows while the multivariate response selection window is active
Correct "help" link in the prediction window
Fix case where category label change may be ignored
Avoid potential crash if invalid level is referenced
Avoid highlighting all the drop-down text if a window is resized
Allow estimates table to scroll horizontally
When drawing an inverted random-part cell in the estimates window check the correct parameter convergence status
Improve toggling selection in the estimates table window
Fix potential crash after changing the number of levels in the response window
Remember selected level-ids when opening the response window, even if one of them was not set
Improve checks that the model is sufficiently set up before certain operations
Improve cut/copy/paste/load/save from the macro editor window
Avoid crash in customised prediction plot window if a drop-down has nothing selected
Improve building the customised prediction window
Allow customised prediction window to be aware if the specification or results have changed via commands
Allow paths specified as UNC to work as expected
Improve automatic creation of "cons" variable if simple notation is selected
Remove various redundant command calls generated by the front-end
Avoid potential crash in the variance function window if a hidden "bcons" parameter exists
Improve handling of window contents scaling for forms that have that option
Fix title and scale value not being displayed in graph options form when clicking on a histogram
Enable a minimum size for histogram plots, and enable scrolling if the area used would then be larger than the window
Allow DESC command to set an empty column description
Fix errors in column naming after a MOVE command
Fix entry of missing value into text boxes where a number is expected
Only prefix generated strings with a \ if the name is already used for a column
Only list columns containing data in potential input columns for split/unsplit records windows
Improve text alignment in the output of TABUlate and AVERage commands
Clear temporary groups used for discrete response models when they are no longer needed
Allow customised prediction, estimate table and hierarchy window to be opened via WSET
Display current line and column in the macro editor
Add warning if iterating flag is set in loaded worksheet
Ignore case when checking whether a string matches a column name
Fix importing text files from with a macro
Ensure message dialogue boxes appear above the application window
Restore black text for pi term in equations multivariate mixed response models
Allow graph rows/columns/groups to be set for histograms, previously this would cause a crash
Allow command to specify histogram widths to work again
Restore stacking of highlighted data in histograms (last in v2.25)
Hide "plot error bar as" option when specifying bar graph/histogram
Fix incorrect legend display after switching from "one per graph window" to "one per graph cell"
Prevent grouped graph row and column plots being repeated if other plots are defined in position in non-matching rows/columns
Ensure MCMC factor dialogue show correct values when opening and a factor has already been defined
Update screenshots in manuals

MLwiN 3.12

09-August-24

Ensure that at least two iterations take place after switching to PQL2, as residuals are not immediately available
Prevent potential crash when clearing model equation
Only allow integer inputs for centring value when adding predictors
Avoid issuing CENT commands from the GUI if the target centring mode is already active
Avoid updating the GUI if an box is set to its existing value
Synchronise the back-end and frond-end convergence criteria to avoid the case where the model stops iterating but parameters remain blue
Fix bug  (introduced in v3.11) preventing multiple responses being set via the GUI
Don't prevent mixes Poisson/Normal response models from running when the Normal response variable has some negative values
Allow turning off denominator/offsets for responses
Prevent the offset columns being expanded too much when running further iterations with multivariate models containing a Poisson response
Correct potential error in elementwise matrix operations with CALC on matrices with different dimensions
Fix potential crash when closing a graph window
Fix potential crash when clearing a graph definition
Fix estimation error if a large number of constraints have been specified
Keep bias correction and s.e. scaling settings in sync for bootstrap if setting these up via commands
Continue bootstrap if a replication fails due to non-convergence and only halt on numeric errors
Fix invalid command call when resetting MCMC advanced options

MLwiN 3.11

14-June-24

Update some help file entries
Correct an error when reading Stata files containing strL variables
Correct an error in the "map" record when saving Stata file format 117 and higher
Fix crash when reading columns from very old worksheet formats
Fix potentially writing outside buffer when writing SAS transport files
Set the data label if set when writing SAS transport files
Import detection of the number of observations when reading SAS transport files
Add handling for truncated doubles when reading SAS transport files
Improved user-defined dialogue box handling, rendering and help file entries
Update zlib to version 1.3.1
Update shapelib to version 1.6.0
Add missing runtime library to Windows setup distribution
Fix crash on start-up that can occur when locale is set to some values
Fix crash if an attempt is made to load/save an SPSS file and the necessary I/O module is not present
Add more error checks when reading/writing SPSS files
Correct cases where an error may occur when parsing ranges within the command line
Correct parsing of very small numbers in scientific notation within the command line (e.g. 2e-5)
Provide more error messages if errors occur while parsing the command line, instead of silently ignoring these
Use more exact values when identifying Stata missing value codes when reading
Enable string ranges to be parsed correctly
Correct possible incorrect command parsing when there is a "-" character present
Improve responsiveness of output window while commands are running
Improve documentation of CODE command
Fix pause button sometimes being left visible after a macro aborts
Fix display error when loading a macro file into the editor
Fix crash if attempting to copy an empty string
Avoid closing any open macro editor windows when a new worksheet is loaded via the GUI
Fix histogram not being plotted when data to be graphed has a different length to the filter column
Avoid an unnecessary graph redraw
Add HSET command to set rows of data to a value based on the current model hierarchy (used when setting graph highlights)
Add HSTY command to allow setting custom graph styles via macros
Save graph highlight information in the worksheet (this required updating the saved worksheet version)
Improve refreshing the data window when values change in the worksheet
Improve writing missing values when saving to older worksheet versions
Update the displayed column names in the groups window when these are changed elsewhere
Add more checks that the columns have the expected length within commands
Avoid crash if rotate is chosen for graph colour or symbol and no grouping column has been specified

MLwiN 3.10

15-March-24

Fix crash when loading worksheets containing MCMC factor models
Slightly increased precision when calculating quantiles
Fix import from SPSS when not all variables have categories defined or are missing descriptions
SUMV, COMM, SUFF, WAIT, INPU, SETW, MVAL, RMEA, MEAS, SKWT, SSDE, GETR are no longer recognised as valid commands (these previously did nothing)
Remove undocumented MLIN, LAG1, WRIT, DESI, MCON, MPRE, FRAC, LAGS, GDYA commands
Improve parameter checking for 2-operand arithmetic commands
Give warning if attempting integer division or modulo by zero instead of crashing
Add ACOS, ASIN, ATAN, DIV, MOD and TAN commands which were previously documented but not implemented
Give an error in CALCulate if an "M" is encountered which does not correspond to missing
Improve parameter checking for VIEW and SETT commands
Update documentation to cover all available commands and match implemented behaviour
Only attempt to set the column name when pasting if a column with that name does not already exist
Fix crash in LISTwise where a single missing value is specified instead of a column of missing codes
Fix cases where the matrix determinant could sometimes be reported with the wrong sign
Add FMOD command and CALCulate operator to allow modulo operation to be applied to non-integer values
Fix crash in CUMSUM, ROWLENGTH and COLLENGTH CALCulate functions
Fix error in MIN/MAX functions
Provide error if equals sign appeared within the body of a calculate statement, rather than silently ignoring the whole command
Avoid crash if destination for a calculate command was invalid
Automatically increase number of worksheet columns if there wouldn't be enough space to load from an external data format and the current worksheet data is being replaced
When importing external files formats and there are more columns that have been specified start adding extra columns from the highest specified, rather than the last one listed
Fix some cases where the GUI was not being correctly notified of changes to the back-end
Fix crash when checking the defined MCMC prior column if no responses have been specified
Correct calculation of column means when there is missing data present
Improve command parameter checking when loading external data formats
Add support for reading and writing all Stata DTA formats (see DTAV command to set the version when saving)
Improve support for reading Stata files containing no observations
Add command (CVCP) to convert text in the current worksheet from a specified code page to Unicode. This could be useful for fixing the text in worksheets where accented character had previously been used
Update imputation commands to allow imputed dataset to be loaded from supported binary data formats, in addition to the previous text format
Correct HSYM calculate function to return matrix elements in the expected order
Fix crash when attempting to plot a histogram

MLwiN 3.09

26-January-24

Store neighbours and weights for all CAR classifications, rather than only the values from the highest classification
Improve memory bounds checking
Avoid some unnecessary memory copies
Fix names window toolbar to correctly reflect new state if categorical status of a column changes
Avoid crash if model tracking columns have not been set
Create screenshots from within front rather than back-end
Check currently set-up model is valid before displaying likelihood in equation
Reduce number of places where (R)IGLS structures are built and cleared
Avoid creating a temporary column when raw weights have not been specified
Issue (R)IGLS weighting command when "Done" is pressed in dialog is pressed, rather than each option is changed
Avoid unnecessary recalculation of standardised weights
Move Bootstrap estimation functionality into a back-end command
Match behaviour of "STARt 1" command between GUI and commands
Improve monitoring of running model
Correct MCMC iteration reporting when thinning is specified
Run all estimation in front-end via commands
Remove unnecessary iteration reports
Add commands for changing Bootstrap estimation settings
Add support for probit and cloglog binomial link functions to Bootstrap estimation
Ignore missing values when checking the range of response variables
Add commands for changing MCMC settings
Explicitly record denominator/offset columns, rather than relying on a specially named column
Correct off-by-one error in CODE command
Use more accurate values for some mathematical constants
Ensure output window is opened in the UI thread if a command error occurs
Avoid double reset when clearing the worksheet
Improve command line parsing
Correct range of data used by YRES command to take missing data into account
Use matrix operations to create starting values for betas and overall residual calculations
Remove limits on number of macros or loops allowed
Allow loops to be nested within a macro
Reinstate dropping trailing zero decimals from numbers included in SJOIN command
Load full macro into memory when called with OBEY command
Correct command syntax checks in GRESp and EXISt commands
Allow MCMC state to be correctly loaded from saved worksheets
Don't allow commands to be issued between SWITch and first CASE command
Only allow one CASE value to match a given value with a SWITch
Only call commands after empty CASE: statement if no other CASE matches, rather than calling these unconditionally
Ignore fully empty command lines, rather than all those fewer than three characters
Improvements to text input/output command and error reporting
Fix incorrect parsing of values starting with "E" or "e" when importing text files
Update data window immediately after the user changes the number format
Correctly update the number of rows displayed in the names window if the maximum number of rows in displayed columns changes
Fix crash in various settings toggling commands if they are run with no parameters
Allow output echoing to work correctly after resuming a paused macro
Avoid "Command Interpreter Busy" error if manually specifying the point size in the graph specification window
Correct text for some error messages
Correct some error checking code for SPSS import that prevented data from being imported if not all variables have associated value labels
When outputting text write missing values as blank fields, unless a space delimiter is specified
Update values in the variance function window whenever an input value is changed, rather than just the grid margin or first column is clicked/changed
Fix some cross-thread UI accesses
Update model running state after an error occurs
Immediately update displayed value if number format options are changed
Correctly load previous iteration and number of converged iterations when loading a worksheet
Allow cutting text from more locations
Fix crash that could occur when using "modify term" dialogue
Iterate to convergence if using STARt/NEXT 1
Avoid calling commands unnecessarily from the non-linear settings dialogue
Update UI platform to .Net 8

MLwiN 3.08

22-September-23

Fix bug preventing SAS transport files being loaded correctly
Correct bug preventing negative-binomial dispersion parameter being stored in the chain column
Don't flag model as having changed if MULM is called but doesn't change the current setting
Correct bug where row count in the data window was not updated if it is lower than the total number of rows for all visible columns
Update zlib to version 1.3
Improve writing debug information to the output window
Remove any formatting characters when pasting category names
Convert to/from UTF16 when copy/pasting to the Windows clipboard
Fix crash when loading old worksheets where the response is not multivariate
Fix some cases where the application toolbar didn't correctly update the status when loading worksheets
Fix some cases where the model state was not correctly reflected when loading a worksheet
Update the column protection indicator in the Names window if this is changed by a command
Correctly generate an error if a CAR ID is present that isn't also in the corresponding classification column.
When saving a BUGS model don't writing partial residual data if nothing is random for a level
Prevent crash when loading a worksheet containing MCMC estimation information by calculating the model hierarchy sooner in the load process

MLwiN 3.07

31-July-23

Check group/box/column numbers used in calculate command are within valid range
Allow LEV1 calculate function to work on groups containing more than one column
Avoid when selecting columns to view in the Data window if the number of columns has changed since the window was opened
Remove dependency from classification display calculation
Avoid crash when setting up model where no explanatory variable have been defined
Fix some user interface resource leaks
Adjust some window default sizes to avoid unnecessary scrolling
Support Unicode (UTF8) encoding
Avoid unnecessary command calls when creating graphs
Improve support for European style decimal separators (note: this means comma can no longer be used as a command parameter separation character)
Run commands and long-running tasks in a separate thread
Correct off-by-one error in graph point selection, preventing last row of data being selectable
Fix crash in BGRD command if the wrong parameters are provided to the command
Allow recognising columns changed by the calculate command that are used in a model as having changed the model specification
Improve UI event generation and handling
Avoid calling commands in order to generate GUI elements
Don't store undo information for data manipulation operations in worksheet columns
Improve column name change handling in "multiple regression" window
Improve consistency in file name/description text in program title bar
Allow TPRO command to work correct when given negative values
Improve when margin titles are automatically added in relation to row/column grouping
Remove calls to GTAB from the UI, as this information is always automatically calculated and the user never has any control over the values
Perform any graph auto-sorting directly in the back-end, avoiding extra unnecessary command calls
Don't use an extra temporary column when doing graph selections
Add 3D graphs to list of windows that can be manipulated via WSET
Improve error messages provided by PUPN command when input parameters are incorrect
Fix overwrite of input column in the IMPEST command
If an estimate is exactly zero report the se as zero too
Handle incorrect length column being requested by the GUI
Allow pausing running macros by default
Avoid unnecessary PRE/POST commands being run when starting MCMC estimation
Avoid crash if no reference category is selected when setting a response type via the GUI
Avoid crash if multiplying matrices containing a zero dimension
Clear the MCMC prior definition column if the model specification changes
Fix the MONI command so that it only affects the "model changed" flag, rather than data modification events as well
Flag model/MCMC status changes in the back-end, rather than the GUI
Avoid crash if estimation a CAR model where there are no predictors at a level
Avoid division by zero if one of the columns used in a calculate command has a size of zero
Record when a model is sufficiently set-up to be able to be estimated and update the GUI appropriately
Report status for all estimation types consistently as status bar text
Reduce flickering in the "Names" window when columns change
Fix command parameter validation in the PLPT command
Avoid crash if the user has manually shortened the missing indicator column
Report column means in the "Names" window
Avoid crash if the EXCL 1 command is used without a second parameter
Use more accurate compiler provided constants for numeric values such as "pi" and "e" (not that is might results in slightly different estimation results compared to the previous version)
Speed up date transfer to graph component
Fix options for filtering subsets of the hierarchy within the hierarchy viewer window
Fix crash if the user doesn't select a predictor to add to the model in the "add term" window
Speed up drawing for the "Boxes" window
Move pasting data to a new menu item, and leave the "Control-V" shortcut for standard pasting
Improve "Response" window to correctly reflect previously chosen responses when loaded, and allow removing all responses.
Avoid resetting the working directory each time another setting is changed in the "Options" window
Apply settings for all tab in the "Options" window when clicking the "Done" button
Maintain position at the end for both views of the command log
Hide "X variable" window when modifying term
Select "uniform prior" checkbox when loading the "Priors" window if this is what it was set to previously
Don't call IGLS related command when running more MCMC iterations or calculating MCMC residuals, as these are not required
Speed up selecting different columns to view from the "Data" window
Remove error boxes if graph columns were not all the same length or where used to store MCMC residuals chains

MLwiN 3.06

28-November-22

Update user interface when PAUSe 1 command is issued
Correct crash introduced in 3.05 when displaying group information
Correct previous fix for displaying Wishart prior parameters
Correct error message display for some graph setting commands
Avoid crash if the frontend requests the size of a non-existent column
Make software aware of high DPI monitors
Correctly set the matrix dimensions of newly added columns
Reset the hierarchy information if the model is cleared
Fix case where sometimes the software didn't update the hierarchy information after changes to the ID column
Fully reset the random number generators after changing the seed
Correctly remove temporary column when running discrete models which would otherwise cause the worksheet to become full
Correct inverted logic causing prediction window to display simple/general notation the wrong way around
Correct error that causes the order information to be lost from a model term when saving and loading
Update zlib to version 1.2.13
Update LAPACK to version 3.10.1
Switch to Visual Studio 2022/.Net 7 for building the software
Build scripting version that can run natively on the M1 Mac

MLwiN 3.05

26-March-20

Display correct MCMC prior matrix in equations window when elements have been removed from the matrix in the model
Correct the calculation of the random part co-variance matrix when parameter expansion is specified
Ignore rows where the level identifier has a missing value, instead of incorrectly creating extra groups
Remove spurious warning message when reading a worksheet that has a different number of levels defined to the current value
Correct off-by-one errors in checks when querying model structure
Apply some internal restructuring
Correct off-by-one error when finding an empty column
Improve reliability of graph filtering
Add option to specify the type of residual adjustment to use
Add column descriptions for residuals calculated via the GUI
Match GUI to the backend by only allowing integer tolerances to be entered
Correct usage message for MTOT command
Allow setting the column description to the same as the name via the GUI
Fix a possible crash/error in model specification when removing a variable near the end of the model from the random part
Clarify warning message when exporting data to Stata and there are invalid variable names
Attempt to keep Window's recent document list up to date when using the LOAD/STOR commands
Avoid adding newline character to category labels pasted in via the names window or PCAT command
Correct the parameter range check when specifying a subset of datasets to use in the ISTA command
Fix off-by-one error which was causing excessive memory allocation when running an imputation analysis
Clear parameter and likelihood history prior to running an imputation analysis
Correct denominator check for MCMC probit models to take into account missing data
Update shapelib to version 1.5.0
Update LAPACK to version 3.9.0

MLwiN 3.04

03-June-19

Correct OLSE command when using a subset of fixed parameters
Fix crash in the RAND command due to information not being updated when a model is modified by has not yet been run
Update output columns to appropriate size even if no iterations have yet occurred
Prevent crash if the user presses the F3 key in the View/Edit data window
Attempt to keep dialogue boxes on the same screen where they are opened from
Read whole file before modifying the worksheet in the GDAL command
Fully create customised prediction and residuals columns before adding them to the worksheet
Correct crash when loading multiple membership MCMC state from a worksheet
Add "[none]" option for column output in the predictions window
Clear x-axis specification if a histogram graph type is requested
Fix potential crash retrieving random part model information from the back-end
Update export options for common graph legend to match main graphs
Fix graph title scaling to work on the actual rather than visible dimensions
Correct residuals command generated via GUI interface to reference correct levels when displayed level numbers do not go from 1..N
Only list levels in the residual window if there are variables defined as random at that level
Fix incorrect variable sometimes been chosen when using the modify term window to modify the model
In the customised prediction graph window select median prediction by default if it has been calculated and the mean hasn't
Avoid hang when clearing the model and the size of the output columns is smaller than the corresponding number of parameters
Only warn once if the model information saved in the worksheet is inconsistent
Update compiler used for back-end to Visual C++ 2019

MLwiN 3.03

11-Feb-19

Correct display of MCMC progress displayed by the front-end
Fix loading MCMC state where the maximum number of levels is different from that in the worksheet
Fix crash when saving model results for an MCMC model where the chain has fewer than 1000 values
Use column number instead of names when generating commands to perform paste, as the names could get out of sync
Fix potential crash when pasting data
Fix potential crash when loading MCMC data where an offset has been defined but does not point to a valid column
Check explanatory variable number is valid when converting model from previous version
Avoid potential crash when saving factor models
Fix potential crash when accessing the model hierarchy information
Display feedback messages when importing data from external data formats only after at least a second has passed
Fix for importing data where the destination columns are not continuous and/or do not start at the beginning of the worksheet
Fix crash in customised prediction screen if the current number of levels is different from that of the stored prediction
Avoid error where the software would try to write a negative number of spaces when printing the column name
Check that graph text entry exists before attempting to clear it
When saving with predefined column name in customised predictions reset any column names that already have that name assigned
Avoid crash if the maximum number of levels is used and a fixed-part parameter is clicked on in the predictions window
Fix incorrectly generated command for auxiliary variables in the imputation specification window
Correct coverage intervals display when loading the customised prediction window
Update the displayed row count after editing data via the data window
Reset "inverse failed" flag before it is used in the SIMU command
Correct bug preventing lowest level variances being removed when changing a multivariate response from Normal.
Fix loading MCMC state from a worksheet where orthogonal or parameter expansion are turned on.
Fix "cons" being made random at level-1 for non-normal models when using simple notation
Fix error in case where the number of selected columns change while the data window is being updated
Check that all column lengths are equal when running the GMUL command
Correct format string when saving files in Stata format
Remove use of temporarily file when saving compressed versions of worksheets
Correctly determine whether a file exists or not when setting PRE/POST/etc files
Improve detection of numeric arguments in commands
Correct potential errors if a "bcons" variable exists (e.g. in a discrete model) and this is not the first explanatory variable
Correctly handle column names when generated the command in the 3d graphs window
Add support for calculating the VIF statistic for stored models
Remove debugging line that was accidently left in which printed the likelihood every time it was calculated
Correct multinomial logit window to use the ticked rather than selected variables when determining which to include in the model
Don't check if the PRE/POST files exist if they aren't set to be used
Ensure that the back-end is kept up to date when modifying the specification in the predictions window
Correct a temporary column not being deleted for some models estimated via PQL, which was resulting in the worksheet becoming eventually full
Remove the requirement to specify a maximum number of explanatory or random part variables
Keep the "manage stored models" window up to date as models are added/removed
Add residual graph for all variables by a particular diagnostic
Fix crash if a non-number was entered in the "goto box" in the data window
Correct the maximum orthogonal polynomial degree allowed
Fix customised prediction window to once more display the current link function for discrete models
Perform additional checks when the 3d graph command are run
Fix potential crash in the predictions window if the number of levels used is equal to the maximum set
Display "not available" in model comparison tables if a requested value was not stored in the worksheet due to the model being saved in a previous version of the software
Hide level-1 from the selection in the residuals window for discrete models estimated with MCMC
Prevent X-variables window from issuing a redundant ADDT command
Fixed potential crash if attempting to plot graph using columns of different lengths
Improved behaviour when removing separate/common coefficients.
Correctly remove temporary columns created by data manipulation windows
Keep list of columns more consistent across windows when making changes to the data
Fix titles in trajectories window potentially being draw too small if the window is partially covered
Fix error when using the "use columns as source" option in the tail areas window
Fix "averages and correlations" window to generate correct command for correlation when weights column is turned on
Ensure CAR options are kept consistent in the cross-classification window when related options are changed
Improve synchronisation between windows when data is changed
Various internal restructuring and fixes for compiler warnings

MLwiN 3.02

01-Mar-18

Fixed crash where the textual representation of numbers exceeded 50 characters
Reduced memory usage for temporary matrices
Add initial support for Stata 119 format
Avoid crash by not not allowing more than 65535 variables to be displayed in the names window
Improve opening times of the names window when viewing a subset of variables
Fix incorrect output columns when using the XSS command
Fix bug in the DISCard command introduced in version 2.27
Fix saving/loading worksheets where a negative binomial model has been fitted with MCMC
Recalculate missing indicator if the response variable is changed (bug introduced in 3.01)
Correct prediction window to allow fixed part prediction in case where all fixed parameters have an associated random part parameter
Avoid crash if length of variable name plotted on the x-axis exceeds 47 characters
Prevent exceed macro editor refreshing when pasting text
Fix potential crash when pasting data
Prevent small (co)variance parameter values from causing the MCMC state to be incorrectly loaded from the worksheet
Correct some errors in the customised prediction window display
Ensure column names are quoted when generated commands in the paste window
Check that a group column has been selected before attempting to run the command in the Take window
Correct the output type check for the SJOIN command
Allow MERGE command to work if IDs are not sorted and there any keys that do not have matches
Improve checks for valid string variable names in commands
Change default so that small residual values are not replaced with missing code (except within multinomial model estimation)
Fix command parameters handling of command parameters in OBEY command
Correct range information for units containing missing data
Add column length check in FXVA command
Allow non-integer bar widths for histograms
Correctly recalculate missing indicator after WEIG and OFFS command (bug introduced in 3.01)
Change symmetric times rectangular matrix multiplication function
Improve missing value handling in MULS and SUBS commands
Improve matrix type checking
Correct PREG command generated to calculate coverage intervals
Avoid crash if printf formatting characters appear in input to SAY command or error messages
Modify layout of range based continuous variable definition in customised predictions to make it clearer
Abort the currently running macro if an error is reported and it is paused
Correct highlighting of relevant line when reporting macro errors
Warn if macro is running when a macro editor windows is closed
Stop any running macros when the software is closed
Add checks to the tabulate window to prevent a crash if no inputs are selected
Avoid copying empty text via the "Copy as Table" button in the output window.
Fix off-by-one error in graph text consistency check when loading worksheets.
Avoid crash if variable or response types are not entered in the imputation specification window
Attempt to use "." as the decimal separator throughout the software
Refresh windows after running commands via command window
Update shapelib to version 1.4.1
Update BLAS/LAPACK to version 3.8.0
Update SPSS I/O library to version 25.

MLwiN 3.01

31-May-17

Fix bug where the window was closed prematurely if the user clicked "include all" when adding a term to the model
Fix a crash that occurs when the number of parameters in the model was close to the current limit
Fix logic error when storing MCMC models if the model fit had not yet been started
Increase default maximum number of model parameters allowed when the software is first started to 500
Match offered variables in customised prediction plot to outputs from prediction, instead of based on column name
Fix synchronisation of columns names when customised prediction is run
Improve keyboard selection and autocompletion in column selection drop-down boxes
Allow custom bar widths to be entered when creating histograms
Fix display of current MCMC iteration when running a model via macros
Correctly recreate the necessary structures to continue running models with orthogonal parameterization when a worksheet is loaded
Improve resizing behaviour of various windows
Add option to plot coverage intervals in customised prediction plots
Fix grid visibility in the variance function window
Add MLDA command to allow creation of a column containing the deviation from a group average
Fix extra parameters being removed when deleting model terms
Fix removing common coefficients to not remove similar separate coefficients at the same time
Avoid creating an extra column for the power of one term in polynomials
Fix crash if removing parameters with the NEXP command
Reduce unnecessary recalculations of the missing value indicator column
Correct calculation of level subscripts in the equations window to take into account missing values
Fix error when removing values or centiles in the customised predictions window
Open new windows on the current screen in multiple-monitor setups
Resize graph titles in the trajectories window to fit into the available space
Fix potential crash if a column is renamed after the response variable windows has been closed
Add option for automatically filling in range options in customised predictions window
Changed coverage interval variable labelling to be more consistent between customised predictions specification and plot windows
Improve the speed when opening hierarchy window by only autosizing the grid after it has been filled
Base available columns in customised prediction plots on the columns associated with the original prediction, rather than column names
Correct submatrix vector-multiply when there is only one row
Display macro editor within main window when it is opened
Display model comparison window within main window when it is opened
Changed the default value for MISR from one to zero for discrete models (excluding multinomial).
Check whether common coefficients have been specified when using MCMC estimation
Check that the model type specified in the MCMC command matches the currently set up model
Check the denominator is valid when running probit models with Gibbs estimation
Speed up changes to the columns displayed in the names window
Add missing line of prior for negative-binomial models
Always use "." as the decimal separator when taking numeric inputs
Fix crash if negative-binomial responses is chosen for multiple-membership models
Allow setting an initial value for negative-binomial over dispersion parameter via the equation window
Only offer columns with data when adding/removing variables via the estimates window
Increase default window size for the data window
Automatically resize columns in model comparison window when it is opened
Fix selecting the column via typing for the prediction, variance and graph highlight windows
Clarify that the values generated by the tail areas window are the upper tail
Fix columns being reversed after an undo operation from data manipulation windows
Update the back-end as the prediction window is filled in to prevent it been reset in certain cases
Use alpha instead of v for the over dispersion parameter in negative-binomial models
Fix crash when setting up a model where cross-classification is turned on an no level-1 has been specified
Fix error (introduced in version 2.33) in the DIC calculation for binary probit models using Gibbs sampling
Fix incorrect likelihood displayed during burn-in period for binary probit models using Gibbs sampling
Add commands to calculate factorial, logfactorial, normal-pdf, poisson-pdf and random draws from a negative-binomial distribution
Fix error in generated command for "distributed random numbers"
Add option for negative-binomial to "generated random numbers" window
Update compiler used for back-end to Visual C++ 2017. Note, the standard random distribution generators have changed in this version, so results may differ. If you need consistent results between versions set RNGV to zero.

MLwiN 3.00

03-Mar-17

New Windows GUI built on the .Net framework
Worksheet columns are now stored in double precision
A 64-bit GUI version of the software is now available
Allow multiple graph windows to be open at once
Allow multiple MCMC diagnostic windows to be open at once
Increase maximum value accepted by EXPO function
Fix display of confidence/credible intervals for model comparison window
Remove display of confidence intervals for random part variables in model comparison window when (R)IGLS estimation is used
Speed up sorting when the data is already in the desired order
Add row for z-ratio to contrasts window
Allow XSS command to be recognised again
Allow loading worksheets where the uncompressed size of the worksheet is great than can be stored in 32-bits
Change "z-score" label in model comparison window to "z-ratio"
Fix bug where it was not possible to select maximum levels minus one as the desired number of levels
Always display z-ratio and p-values to three decimal places in the intervals and tests window
Rename the MISS calculate function to NMIS to avoid conflicts
Correct MCMC iteration display when thinning is used
Fix "execute selection" button in the macro editor to work as expected
Add option to the RTYPe command for computing unadjusted comparative variances
Add command corresponding to the "subscripts as names" selection box
Remove option for using worksheet space to store temporary matrices
Correct missing values output when saving Stata dta files as double precision
Change the default random number generator from Wichmann-Hill to Mersenne Twister
Add window for specifying 3D graphs
Fix crash when attempting to fit a multiple-membership model with multivariate models
Remove option to set the worksheet size as this is now redundant
Fix bug where the last value of the response variable for ordered multinomial models was incorrect when exported to BUGS
Add menus for saving WinBUGS/OpenBUGS script files
Set default version of BUGS files exported to 1.4
Update BUGS interface to allow calling WinBUGS/OpenBUGS directly from MLwiN
Fix crash if a command shorter than four characters is issued
Increase maximum number of displayed iterations in the trajectories window to 50000
Update version of BLAS/LAPACK used to version 3.7.0
Update SPSS I/O library to version corresponding to SPSS 24
Ensure that command generated to change dataset label quotes the new label
Improve commands generated through the GUI
When importing ASCII data only flag up integer values that are too long to be used as IDs
Fix swap command to allow turning off polynomial status for variables
Store the state of the new random number generator when saving the worksheet
All rows to be pasted can now be previewed, rather than just the first 10, via the Edit->Paste Menu
Updated included zlib library to version 1.2.11
Updated included shapelib library to version 1.4.0
Updated included SPSS I/O library to version 24
Fix default selected categories for ordered multinomial in customised predictions screen
Add facility to set up some basic structures to the "intervals and tests" window
Add message to "intervals and tests" window to indicate that z-ratios and p-values assume normality
Fix crash in ASSI command if one column is specified and only text data is provided
Fix pasting a single text variable via the names window
Add window for viewing current box values
Add window for viewing current string values
Add option for MLREcode to multilevel data manipulations window
Add "clear display" button to customised graphs window
Fix pairwise residual plots with subset of parameters
Update labels in the predictions window to attempt to make them clearer
Swap drop-down locations for plus and minus error bars
Scale down graph margin titles when the text is too wide to fit
Modify column display from PRINT command to allow it to work better with the "copy as table" functionality
Display status messages during model storage
Remove limit of twelve graphs when initially opening the trajectories window
Add unit information to the equation window
Save MCMC settings to the worksheet, even if the model estimation has not yet been started
Allow MCMC diagnostics to also be triggered by clicking the graph title
RNGV with no parameters will now report the version currently in use
Add DTOC command to allow creating a categorical variable from unique values of a continuous variable, using the previous values as labels
Fix ADDM command to not add the created indicator columns into the fixed part of the model
Allow more control over whether to display variances and/or correlations in model comparisons
Update "add term" window to better match the capabilities of the corresponding command
Add window to allow specification of default graph export options for newly drawn graphs