CHANGELOG.md

Change Log

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3.12.0 - 2018-04-06

Enhancements

• owselectrows: Change defaults for 'Purging' (#2969)
• statistics: Speed up countnans for sparse matrices (#2965)

Bugfixes

• Sieve Diagram: Fix spacing of axis labels (#2971)
• Fix data reading speed (#2923)
• KMeans clear results on k change, do not recluster (#2915)
• gui.ControlledList: Take a weakref to listBox (#2962)
• WidgetManager: Schedule delayed deletion for managed OWWidgets (#2963)
• domaineditor: Give the VarTableModel a parent (#2961)
• scatterplot: limit number of points displayed in tooltip (#2980)
• Speed-up prediction by circumventing Instance-specific prediction. (#2959)
• Vizrank: Properly shutdown/wait when parent deleted (#2960)
• Test & Score: Make the scores view table non-editable (#2947)

3.11.0 - 2018-03-07

Enhancements

• Distances: Optimize PearsonR/SpearmanR (#2852)
• Data Table: Optimize performance (#2905)

Bugfixes

• Save Image to SVG fixed on Qt5 (#2930)
• Test & Score: Resort scores when data changes (#2931)
• distribution.py: Fix computation on multiclass data (#2903)
• contingency.pyx: Fix out of bound write (#2924)
• Test and Score: Fix averaging over classes for binary scores (#2918)
• sgd: Change deprecated n_iter to max_iter (#2920)
• heatmap: Do not crash on all zero column (#2916)

3.10.0 - 2018-02-19

Enhancements

• Select Rows: Add annotated data output (#2908)
• canvas: Open dropped ows files (#2885)
• Settings for HTTP and HTTPS proxies in the canvas (#2906)
• Add-ons: Option to list only trusted add-ons (#2899)

Bugfixes

• SPG Legend: Fix vertical spacing (#2914)

3.9.1 - 2018-02-02

Enhancements

• Add parameters and similarity measures to tSNE (#2510)
• Canvas: Add zoom (#2841)

Bugfixes

• OWWidget: Store quicktip displayed state in non versioned settings dir (#2875)
• Impute: Fix state serialization/restore (#2830)
• Feature Constructor: Make FeatureFunc picklable (#2873)
• Projection widgets: transform data properly (#2871)

3.9.0 - 2018-01-19

Enhancements

• Linear Discriminant Analysis: scripting part (#2823)
• owdistances: Add 'Normalize' check box (#2851)
• Variable: Simplify the is_{discrete,continuous,...} implementation (#2874)
• manifold: Use arpack for decomposition in torgerson (#2825)
• Radviz: new widget (#2480)
• Canvas: Improve preview rendering (#2784)
• Linear Projection (LDA, PCA) (#2445)
• Scatter Plot Graph: max discrete values colors and shape (#2804)
• Scatter Plot Graph: legend opacity (#2819)

Bugfixes

• Add labels to combo when data comes from distance matrix (#2866)
• utils/concurrent: Handle an empty futures list (#2834)
• OWWidget: Move 'splitter' to private members (#2847)
• Radviz: enable VizRank numeric color (class) (#2853)
• Bincount: Fix crash on array with all nans (#2831)
• mds: Fix incorrect assert (#2844)
• VizRank (Linear Projection, Radviz): spin disabled/enabled (#2846)
• Windows installers: Python lookup (#2827)
• Canvas: Palette propagation (#2760)
• mssql: Catch errors due to incorrect connection params (#2838)
• canvas/addons: Fix progress dialog showing up when not necessary (#2833)
• ContextHandler: Merge local context into globals before serialization (#2837)
• Hierarchical Clustering: Fix size constraints (#2796)
• canvas/annotationitem: Use separate item for shadow base (#2821)
• Scatter Plot Graph: vars instead of indices & remove dead code (#2815)
• Table: classes (Y) must be float (#2822)

3.8.0 - 2017-12-01

Enhancements

• New signals: Trees, Forest (#2801)
• Scatter Plot: Improve tooltips (#2703)
• Allow custom (generic) names in Transpose Widget (#2737)
• Scatter Plot VizRank: some fixes and regard to color (#2787)
• Improved Sparsity Handling (#2341)
• Error Reporting: send report even when recursion error is raised
• test_owdatasets: Test files at different (dir tree) depths
• [FIX] Rank: should not fail on data with no attributes
• Domain: Add copy method (#2734)
• Domain Model: order without separators (#2697)

Bugfixes

• Test & Learn: do not crash on a data with class only nans (#2751)
• FreeViz: 2 issues when no data (#2780)
• [ENH] Scatter Plot VizRank: some fixes and regard to color (#2787)
• Scatter Plot Graph: crash on metas column with all 0 values (#2775)
• Scatter Plot: subset data (#2773)
• Scatter Plot: VizRank disabled when no class vars (#2757)
• Error Reporting: send report even when recursion error is raised
• Select Rows: None on output when no data (#2726)
• test_owdatasets: Test files at different (dir tree) depths
• [FIX] Rank: should not fail on data with no attributes
• Predictions: space added before bracket in meta name. (#2742)
• Fix AbstractSortTableModel.mapFromSourceRows for empty list or array (#2730)
• Correspondence Analysis: do not crash when no categorical (#2723)
• ScatterPlotGraph: fix zoom CTRL + and CTRL - (#2716)
• errorreporting: Remove use of pip internal api (#2724)

3.7.1 - 2017-11-17

Enhancements

• MDS: Support showing textual features as labels (#2699)

Bugfixes

• canvas/canvasmain: Fix 'Examples' action handling in the welcome dialog (#2779)
• Nomogram on PyQt4 (#2763)
• Broken installation of Installation of wheels (#2765)
• Add-on installation crashes (when conda not in PATH) (#2725)

3.7.0 - 2017-10-27

Enhancements

• Data Sets: Add filter (#2695)
• Add-on installation with Conda (#2561)
• Add Groups column to Selected Data in Scatter plot output (#2678)
• DomainModel: Don't Show Hidden Variables by Default (#2690)
• FreeViz: new widget (#2512)
• FreeViz script (#2563)
• Boxplot: Allow hiding labels (#2654)
• owmds: Support selection/output of multiple groups (#2666)
• Widget status bar buttons (#2514)
• owfile: allow multiple readers with same extension (#2644)

Bugfixes

• Tree Viewer: reset view to top left (#2705)
• ScatterPlot Crashes on Data With Infinity Values (#2709)
• Scatter Plot: regression line: show r instead of k (#2701)
• settings: Do not clear schema_only settings on close_context (#2691)
• Statistics.unique: Fix Sparse Return Order For Negative Numbers (#2572)
• Statistics.countnans/bincount: Fix NaN Counting, Consider Implicit Zeros (#2698)
• MDS: No optimization when subset data (#2675)
• Outliers widget no longer checks classes and doesn't crash on singular covariances matrices (#2677)
• OWRank: Fix autocommit (#2685)
• OWScatterPlot: Change output Feature to AttributeList (#2689)
• OWSql does not save selected table/query (#2659)
• Scatter Plot: Scatter Plot automatically sends selection (#2649)
• Silhouette plot rendering (#2656)
• Variable.make returns proxies (#2667)
• owhierarchicalclustering: Fix performance on deselection (#2670)
• Report Table: Make Table Headers Bold (#2668)
• MDS: primitive metas, init_attr_values (#2661)
• MDS: Primitive metas (#2648)
• MDS: similar pairs and combos not cleared (#2643)
• Scatter Plot: remove dead and commented code, tests (#2627)

3.6.0 - 2017-09-29

Enhancements

• PythonScript: Multiple inputs (#2506)
• DomainEditor: Add horizontal header (#2579)
• Feature Constructor: Support additional functions () (#2611)
• Miniconda installer: Install conda executable (#2616)
• Datasets: New widget (#2557)
• Neural Network widget (#2553)

Bugfixes

• settings: Store settings version in the serialized defaults (#2631)
• canvas/stackedwidget: Check if the new geometry is the same as the old (#2636)
• OWRank: sort NaNs last; fix sort indicator (#2618)
• Schema-only settings in components (#2613)
• OWBaseLearner: Save learner name in workflow (#2608)
• Saving of multiple selections in ScatterPlot (#2598)
• OWBoxPlot: Faster selection (#2595)
• preprocess.randomization: Do not use the same seed for X, Y, and meta (#2603)
• Slow Rank (#2494)
• setup: Increase required setuptools version (#2602)
• Disable pyqtgraph's exit cleanup handler (#2597)
• ScatterPlotGraph: fix labelling when there are missing data (#2590)
• canvas: Fix link runtime state modeling (#2591)
• Tree: Reintroduce preprocessors. (#2566)
• canvas/preview: Fix workflow preview rendering (#2586)
• Fix saving reports on Python 3.6 (#2584)
• Fix failing report tests (#2574)
• widgets/tests: Compatibility with Python 3.5.{0,1} (#2575)

3.5.0 - 2017-09-04

Enhancements

• Proper calculation of distances (#2454)
• OWFeatureConstructor: Add new functions from numpy (#2410)
• Widget status bar (#2464)
• Impute widget: Parallel execution in the background (#2395)

Bugfixes

• Mosaic Display: subset data (#2528)
• MDS: Optimize similar pairs graphics construction (#2536)
• Error Reporting: read attached schema file as utf8 (#2416)
• Another color palette when too many colors needed (#2522)
• Widget: splitter sizes (#2524)
• Silhouette Plot: another memory error (#2521)
• Fix asynchronous widget tests (#2520)
• Mosaic Vizrank: compute_attr_order is called every step (#2484)
• widgets/model: Restore 'explicit' hint flag for 'Coefficients' output (#2509)

3.4.5 - 2017-07-27

Enhancements

• OWMDS, OWLinearProjection: Save selection in workflow (#2301)
• SQL: Save user name and password via credentials manager (#2403)
• Canvas Annotations: Text markup editing (#2422)
• New windows installer scripts (#2338)

Bugfixes

• Tree: Fix min_samples_leaf check (#2507)
• Tree: Support classification on sparse data (#2430)
• Trees: Support regression on sparse data (#2497)
• Trees: Fix predictions on sparse data (#2496)
• Change Variable Icons: Discrete -> Categorical, Continuous -> Numeric (#2477)
• Distributions: Show probabilities upon selection (#2428)
• Manifold Learning: Handling out of memory error (#2441)
• CN2 Rule Induction: Handling out of memory error (#2397)
• Hierarchical Clustering: Explicit geometry transform (#2465)
• Scatter Plot Graph: Legend symbols color (#2487)
• Table: Fix printing data with sparse Y (#2457)
• Ensure visible nodes after opening a workflow. (#2490)
• Select Rows: Removing Unused Values for Discrete Variables in Sparse Data (#2452)
• simple_tree.c: Fix mingw compiler compatibility (#2479)
• Add-ons: Fix Installation of Official Add-ons Through Drag & Drop (#2481)
• Mosaic: Clear when data is disconnected (#2462)
• Create Class: Class name cannot be empty (#2440)
• WidgetSignalsMixin: Fix input/output ordering for 'newstyle' signals (#2469)
• Table: Update ids in Table.__del__ (#2470)
• Preprocess: Fix RemoveNaNClasses / Use existing HasClass (#2450)
• SQL: Fixes for Custom SQL option (#2456)
• OWColor: Fix propagating changes to the output (#2379)
• Distances: Prevent inf numbers (#2380)
• Test and Score: Show default columns (#2437)
• Silhouette Plot: Now setting axis range properly (#2377)
• Logistic Regression: Impute (#2392)
• schemeedit: Clear edit focus before removing items (#2427)
• Disable menu and mouse zoom in all evaluate's plotting widgets. (#2429)
• canvas: Fix proposed connection scoring for dynamic signals (#2431)
• ROC Analysis: Color support for more than 9 evaluation learners (#2394)
• Scatter Plot: Two minor errors (#2381)
• Feature Constructor: No fail when no values (#2417)

3.4.4 - 2017-06-16

Enhancements

• SimpleTreeLearner: Release GIL & thread safety (#2398)
• Improve support for HiDPI displays (#2325)
• Add a tutorial section on responsive GUI (#2318)
• Check if updates are available upon startup (#2273)

Bugfixes

• Vizrank: interact with gui from main thread only (#2389)
• Some preprocessors couldn not be pickled (#2409)
• MDS: Support distances without domain information (#2335)
• Paint Data: Fix crash on empty data (#2399)
• Distributions: do not crash on empty data (#2383)
• Update checker: LooseVersion does not handle str parts (#2401)
• owpreproces: Stable order of continuizers (#2400)
• owmanifoldlearning: Remove n_jobs=-2 parameter (#2371)
• Scatter Plot: features and no data (#2384)
• tests: Fix test errors when running with numpy 1.13.0 (#2396)
• OWColor: Use DiscreteVariable values for matching contexts (#2376)
• Outliers: handling memory error (#2374)
• score.FCBF: do not segfault on continuous variables w/ <0 values (#2355)
• Rank widget supports Scorer inputs (#2350)
• Silhouette Plot: handling memory error (#2336)
• Distances: handling errors due to too large arrays (#2315)
• Confusion Matrix: do not append extra column if empty (#2386)

3.4.3 - 2017-06-03

Enhancements

• Venn diagram: Support sparse data (#2334)
• PCA: Support sparse data (#2313)
• Impute: Support sparse data (#2357)
• Merge: Support sparse data (#2305)
• Scatter Plot: Support sparse data (#2152)
• Manifold: Support t-SNE on sparse data (#2281)
• Mosaic: Selectable color variable (#2133)
• Test & Score: Allow choosing columns (#2257)
• Preprocess: Add all available methods to feature selection (#2205)
• Scatter Plot: Support string metas labels (#2360)

Bugfixes

• Fix and improve Precision, Recall, F1 (#2369)
• Paint Data: Stores data in list and not np.array (#2314)
• Paint Data: Save and load labels (#2259)
• File: No domain or empty domain -> no data (#2337)
• File: Support sparse data in Domain Editor (#2245)
• File: Raise and handle Exc. when file bad pickle (#2232)
• Test & Score: Fix migration of old settings (#2254)
• Test & Score: Show correct error (#2263)
• Test & Score: Instantly recognize new input (#2247)
• Test & Score: Handling memory errors (#2316)
• Tree Viewer: Check if there is selected class value (#2224)
• CredentialManager: Handling password credentials error (#2354)
• RowInstance: Fix sparse check (#2362)
• Cross Validation: Cast fold number to string (#2348)
• Silhouette Plot: Elide hover labels if labels are long (#2278)
• Select Rows, Table: Filtering string values (#2176)
• Report: Handle PermissionError when trying to save (#2225)
• Continuize: Prevent crashing - column with equal and NaN values (#2144)
• Add-ons: Handling ValueError due to connection problems (#2239)
• Correspondence: Prevent crashing when cont attr has one value (#2149)
• WebEngineView: Insert JS if loading already started (#2230)
• Manifold Learning: handling numpy LinAlgError (#2228)
• MDS: Fix widget update scheduling (#2211)
• Settings: Handle permission errors when saving settings (#2147)
• Map: Minor fixes (#2356)

3.4.2 - 2017-04-19

Enhancements

• Nomogram: Support for sparse data (#2197)
• Add PDF format to image exporters (#2210)
• Reimplement macOS application (.app) build scripts (#2217)
• Canvas: Use 'windowFilePath' to display display current filename instead of the title (#2206)
• OWTestLearners: Cross validation by feature (#2145)
• Pythagorean tree: Make border scale invariant (#2141)

Bugfixes

• Scatterplot crashes when loaded from old workflow (#2241)
• Error Report: URL changed (#2220)
• Scatter Plot: update class density (#2238)
• KMeans: should not crash when there is less data rows than k (#2172)
• Edit Domain: Prevent duplicate variable names (#2146)
• Scatter Plot: left margin (axis y) is now adapting (#2200)
• Predictions widget: handle similar but different domains (#2129)
• OWNomogram: Do not paint scene until the widget is not open (#2202)
• Test & Score: crashing prevented when learner disconnects (#2194)
• Widget Logistic Regression: can handle unused values (#2116)
• stats: Open Corpus in OWDataTable after transposing it (#2177)
• Rank: fixes creating Table with infinite numbers (#2168)
• Add-ons: Problems with datetime parsing (#2196)
• OWPredictions: Allow classification when data has no target column (#2183)
• OWDataSampler: Fix typo boostrap to bootstrap (#2195)
• All widgets are set to auto* when they are used for the first time (#2136)
• Preprocess: enums containing function names changed (#2151)
• Fitter: Fix used_vals and params not being set (#2138)
• VizRankDialog: Stop computation when parent widget is deleted (#2118)
• Distributions Report: Visualizations are now fitted (#2130)
• Fitter: Change params uses default if None (#2127)
• Fix invalid settings reuse in File widget (#2137)
• Scatter Plot - Prevent crash due to missing data (#2122)
• Sieve Diagram: Using datasets with meta data (#2098)

3.4.1 - 2017-03-16

Enhancements

• Scatterplot: Implement grouping of selections (#2070)

Bugfixes

• Discover widgets when some dependencies are missing (#2103)
• Select Rows: "is defined" fails (#2087)
• report comments and OWFile reporting filename (#1956)
• owcorrespondence: Handle variables with one value (#2066)
• OWTreeViewer: Fix trees being displayed differently for same tree object (#2067)
• Fitter: Properly delegate preprocessors (#2093)

3.4.0 - 2017-03-06

Enhancements

• OWSGD: Output coefficients (#1981)
• OWNomogram: Add a new widget (#1936)
• OWRandomize: Add a new widget (#1863)
• Map widget (#1735)
• Table.transpose: Use heuristic to guess data type of attributes of attributes (#1844)
• Create Class widget (#1766)

Bugfixes

• Heatmap: Fix crash on data with empty columns (#2057)
• ScatterPlot: Fix crash when coloring by column of unknowns (#2061)
• owpreprocess: Handle columns with only NaN values (#2064)
• File: Disallow changing string columns to datetime (#2050)
• OWKMeans: Auto-commit fix and silhuette optimization (#2073)
• OWDistributions: Fix binning of meta attributes (#2068)
• SelectRows: Fix loading of conditions (#2065)
• OWRandomize: New icon (#2069)
• ZeroDivisionError owmosaic.py (#2046)
• OWMosaic: Fix crash for empty column (#2006)
• Fitter: Fix infinite recursion in getattr (#1977)
• OWTreeGraph: Update node text when selecting target class (#2045)
• Prevent PickleError (owfile.py) (#2039)
• Fix Chi2 computation for variables with values with no instances (#2031)
• OWDistanceMatrix: Remove quotes with string labels (#2034)
• owheatmap: Prevent sliders to set Low >= High (#2025)
• WebviewWidget: WebEngine Don't Grab Focus on setHtml (#1983)
• OWFile: Show error msg when file doesn't exists (#2024)
• Preprocess Widget: Continuize type error (#1978)
• data/io.py Metadata file not saved anymore when it is empty (#2002)
• Import from AnyQt instead from PyQt4 (#2004)
• OWNomogram: Adjust scene rect (#1982)
• owconcatenate: Fix domain intersection (remove duplicates) (#1967)
• preprocess: Reset number_of_decimals after scaling (#1914)
• Treeviewer sklearn tree compatibility (#1870)
• OWSVR: Update learner when SVR type changes (#1878)
• Tree widget binarization (#1837)

3.3.12 - 2017-02-14

Bugfixes

• Highcharts: Fix freezing on Qt5 (#2015)
• Handle KeyError Mosaic Display (owmosaic.py) (#2014)
• Loading iris on C locale (#1998)
• Handle KeyError Sieve Diagram widget (owsieve) when one row (#2007)
• Test Learners: Fix AUC for selected single target class (#1996)
• OWDataSampler: Fix 'Fixed proportion of data' option (#1995)

3.3.11 - 2017-02-03

Enhancements

• Widget testing utilities (#1939)

Bugfixes

• KMeans: Fix crashes when underlying algorithm fails (#1974)
• owpaintdata: Adjust color model to input dataset (#1988)
• scatterplot: Fix density image (#1990)
• owpaintdata: Fix an error when the input dataset contains NaN (#1972)
• Table: Ensure correct dtype in _compute_distributions (#1969)
• Evaluation Results input validation (#1954)
• owimpute: Fix editing of individual imputers (#1966)
• gui: Trigger callback in SpinBoxWFocusOut only if value changed (#1979)
• Python 3.6 compatibility (#1963)
• File: Fix crash when last_path is None (#1961)
• Paint Data: in-place output modification (#1959)
• DataSampler: Fix crash when stratifying unbalanced datasets (#1952)
• Table.repr: Fix for sparse data with < 5 instances (#1951)
• Catch errors during learning in learner widgets (#1949)
• OWMosaic: Fix crash for attribute with no values (#1941)
• Impute: Fix crash when model-based imputation fails (#1937)
• OWSieve: Fix crash for attribute with no values (#1934)
• Tree: Fix crash when two attributes equal number of values (#1928)
• Store changed variables in File widget (#1805)

3.3.10 - 2017-01-18

Enhancements

• Input/output signal replacement declarations (#1810)

Bugfixes

• MDS Widget: Handle NaN values for plot point styling (#1931)
• OWPCA: Fix crash for dataset with no rows or no attributes (#1915)
• OWMosaic: Discretize metas as well (#1912)
• owfeaturecontructor: Fix an IndexError accessing exception's args (#1905)
• owrank: Remove super() call from migrate_settings (#1902)
• OWBoxPlot: Fix ordering of boxes (#1900)
• canvas/readwrite: Fix byte literal serialization (#1898)
• owpca: Handle the case of 0 total variance in the PCA solution (#1897)
• Copy data attributes for annotated data set (#1895)
• colorpalette: Fix AttributeError (#1889)
• OWDistributions: Reset combos when data is removed (#1887)
• Concatenate bugfix (#1886)
• OWPredictions: Fix crash when opening report (#1884)
• owsilhouetteplot: Fix TypeError when cluster column is an object array (#1876)
• OWSave: Safer Check if Writer Support Sparse (#1864)
• OWImageViewer: Fix selection with missing values (#1861)
• owselectcolumns: Fix auto commit on any change (#1859)
• Table.transpose: Keep metas array two dimensional when no attributes in domain (#1855)
• Select Rows filter enum (#1854)
• Scatter plot: don't crash on report without data (#1840)
• Crash on ctrl-c/cmd-c in widgets without graphs (#1827)
• Fix crash in listview if labels are changed before calling setitem (#1825)
• Scatterplot: Allow labelling by string attributes (#1812)
• Fix copy to clipboard in "Data Table" widget (#1808)
• TreeGraph: Compatibility with old schemas (#1804)

3.3.9 - 2016-12-02

Enhancements

• OWTranspose: Add a new widget (#1738)
• Add appveyor configuration (#1693)
• Vizrank indicators and filters (#1746)
• OWManifoldLearning: MDS - enable PCA initialization (#1702)
• Add VizRank to Mosaic (#1699)
• Setting migration (#1724)
• widget: Allow subclasses to disable the default message bar widget (#1543)
• Manifold Learning (#1624)
• SQL Server support in SQL widget (#1674)
• Visualize widgets: Output Annotated data and Fixups (#1677)
• Add support for PyQt5 (#1171)
• Simple benchmarking suite. (#1510)
• Canvas: Always show the link dialog if the user holds Shift (#1673)
• Scatterplot, HeatMap, TreeGraph, ConfusionMatrix and Unsupervised widgets: Output Flagged Data (#1655)
• CN2RuleViewer: Output sample of training data in absence of separate data (#1667)
• Metadata for data files (#1603)

Bugfixes

• owrank: Add migrate_settings (#1797)
• owconfusionmatix: Add migrate_settings (#1796)
• Improve ada boost widget (#1787)
• OWBoxPlot: Fixups (#1783)
• Filter: Fix FilterContinuous eq operator (#1784)
• OWDistanceMatrix: attribute in context (#1761)
• Hierarchical clustering: Make annotation a context setting (#1748)
• Fix varius deprecation (and other) warnings (#1774)
• Fix transformation for non primitive variables (#1770)
• TimeVariable: don't crash Data Table when reloading and Visualize ... (#1760)
• OWDistances: Mahalanobis wrong dimensions notification. (#1762)
• Switch Sieve to DomainModel, which also fixes VizRank crash on meta attributes (#1642)
• Confusion matrix: Map annotated data through row_indices, add probabi… (#1720)
• OWLoadClassifier: Show message on unpickling error (#1752)
• Silhouette Plot: Fixes (#1747)
• canvas/toolgrid: Remove (unused) mouse press event tracking (#1740)
• Box plot: Handle situation when quantiles can't be computed (#1742)
• owfile: Hide apply button after resetting editor_model (#1711)
• oweditdomain: Initialize var attribute (#1731)
• FeatureConstructor: Fix crash when new variable is created without data (#1733)
• owpythonscript: Fix QFileDialog.get{Save,Open}FileName usage (#1726)
• DendrogramWidget: Prevent a zero division error (#1725)
• owfile: Skip add_origin if no filename (#1717)
• OWFile: Do not load large files automatically (#1703)
• Do not show messages when data is removed (#1706)
• Confusion Matrix: Show error on regression results (#1709)
• Fix tests (#1698)
• Scatter Plot: Fix a error when restoring from pre DomainModel workflows (#1672)
• Tree Scorers: Change 'int64_t' to 'intp_t' for platform independence (#1687)
• OWTable: Sort Continuous metas as floats; not strings (#1678)
• Error Reporting: Temporary last open/save directory (#1676)
• TableModel: Don't crash on empty sparse data (#1675)
• Statistics.util.stats: Fix negative #nans for sparse (#1659)
• MDS Widget: Fix zero length line, gray square bug (#1670)
• Fix an error when using latest pyqtgraph develop snapshot (#1662)
• OWHeatMap: Resend 'Selected Data' when settings change (#1664)
• Fix pythagoras tree tooltip for regression trees (#1660)
• OWConfusionMatrix: Output None when no data is selected (#1653)
• OWBoxPlot: Reset widget's appearance when data is removed (#1654)

3.3.8 - 2016-10-11

Enhancements

• CredentialManager: Store passwords in System Keyring Services (#1641)
• Extend widget creation policy (#1611)
• File widget improvements (#1607)
• Remote reporting of unexpected errors (#1558)
• OWRank: Widget improvements (#1560)
• canvas: Indicate runtime state on links (#1554)
• Rule induction (CN2) (#1397)
• Upgrade OWSvm unittests (#1499)
• Enable Ward clustering in Hierarchical clustering widget (#1515)
• PCA transformation speedup (#1539)

Bugfixes

• owsql: Fix bug when using connection before established (#1638)
• Scatterplot: Reintroduce sliders for size and opacity (#1622)
• Reporting tabular in Data Table and Rank widgets (#1573)
• BoxPlot crashes on variables with no known values (Fixes #1568) (#1647)
• Canvas: Replace illegal file-name characters with _ when saving workf… (#1644)
• OWScatterPlot: Fix progress bar percentages running over 100% (#1645)
• OWFile: Report errors for incorrect file formats instead of crashing (#1635)
• OWFeatureConstructor: Fix domain check for only meta data sets (#1632)
• gui.lineEdit: Restore changed state tracking (#1630)
• errorreporting: Fix an KeyError for a missing 'Widget Module' entry (#1625)
• win-installer: Build scikit-learn in windows installer build script (#1623)
• owlearnerwidget: Fix output initialization (#1562)
• gui: Add a push button class adapted for variable width text (#1614)
• : Add Explicit flag to supplementary Table learner output (#1617)
• Silhouette: Auto-commit on changing checkbox state (#1606)
• Linear regression: Fix Elastic net; Fix Auto-apply buttons (#1601)
• ROC Analysis - Fix roc averaging (#1595)
• OWBaseLearner: Do not re-fit if name has changed (#1580)
• Context attributes with metas in Sieve and Mosaic (#1545)
• Variable: Fix Variable.copy for StringVariable and TimeVariable (#1589)
• Stats: Fix counting of missing values for non-numeric data (#1585)
• Load Classifier widget sends classifier on init (#1584)
• Context settings (#1577)
• Fixed svg function to return svg chart together with container div for highcharts (#1541)
• Fix compatibility with Color widget (#1552)
• Gini impurity: formula and docstring fixed. (#1495)
• owimageviewer: Open local images directly (#1550)
• Fix loading of datasets with paths in variable attributes (#1549)
• Confusion matrix: fix selected_learner setting (#1523)
• canvas/addons: Remove wrong/unnecessary proxy mapping (#1533)
• Scatterplot: Score Plots crash if multiple attributes have the same score (#1535)
• ScatterPlot: Score Plots window title changed to title case (#1525)
• Predictions: column size hint (#1514)

3.3.7 - 2016-08-05

Enhancements

• ImageViewer: Add a 'Preview' like window (#1402)
• Pythagorean tree and Pythagorean forest widgets (#1441)
• New workflow examples for the Welcome screen (#1438)
• Test widgets on travis (#1417)
• Save painted data to schema (#1452)
• Welcome screen: New icons for welcome screen (#1436)
• SqlTable: Automatically recognize date/time fields (#1424)
• Proxy support for add-on installation (#1379)
• Automatically create required SQL extensions (#1395)
• Ranking for Sieve, refactoring of Sieve, Mosaic and VizRank (#1382)
• Rank adopted for sparse data (#1399)
• PCA: Add lines and labels showing the explained variance (#1383)
• Implement copying graph to clipboard using Ctrl-C (Cmd-C) (#1386)
• Parallelized cross validation & other evaluation methods (#1004)
• Image viewer thumbnail size (#1381)

Bugfixes

• Table names set by readers (#1481)
• OWRandomForest: Fix, refactor and widget tests (#1477)
• KNN: Fix crash when Mahanalobis metric is used (#1475)
• Fix AdaBoost widgets and add some tests (#1474)
• Table: Fix ensure_copy for sparse matrices (#1456)
• statistics.utils: Fix stats for sparse when last column missing (#1432)
• MDS and Distances widges fix (#1435)
• OWBaseLearner: Learner name is changed on output when user changes it and auto apply selected (#1453)
• Stop advertising support for weights in LogisticRegression. (#1448)
• OWScatterPlot: Fix information message reference (#1440)
• Fix Tree preprocessor order. (#1447)
• SqlTable: Cast to text for unknown and string types (#1430)
• NaiveBayes: Handle degenerate cases (#1442)
• OWBoxPlot: Show corresponding label when ploting discrete variable (#1400)
• Lin and Log Regression: Prevent double commit (#1401)
• KMeans: Silhouette score format precision fixed to integer (#1434)
• Select Rows: skip undefined TimeVariable filters (#1429)
• OWTestLearners: Fix reporting results table (#1421)
• Scatterplot: Sends none in no instance selected (#1428)
• PCA: Fix the variance spin. (#1396)
• overlay: Auto disconnect when the overlay widget is deleted (#1412)
• PaintData: Send None instead of empty table when the plot is empty (#1425)
• Rand Forest Class: Min sample replaces max leaf nodes (#1403)
• SelectRows: Index attrs only by visible in set_data (#1398)
• File: Stores filenames to image attributes (#1393)
• Fix a logging error on windows (#1390)
• OWLearnerWidget: Don't crash when training data contains no features (#1389)
• TimeVariable: fix repr rounding and repr for nan (#1387)

3.3.6 - 2016-06-24

Enhancements

• Automatically discretize continuous variables in Sieve (#1372)
• Nicer reporting of tabular data (e.g. Confusion Matrix) (#1309)
• Match only at the beginning of word in quickMenu search (#1363)
• Univar regression coefficients (#1186)
• Add Mahalanobis distance (#1355)
• Move Data Table higher in the 'suggested widgets' list (#1346)
• Support Distances on Sparse Data (#1345)
• Add auto apply to Test & Score (#1344)
• Support unix timestamps in TimeVariable (#1335)
• Skip Hidden Attributes in SelectRows (#1324)
• Preprocessor widget: add random feature selection (#1112)
• Sort list of available add-ons (#1305)

Bugfixes

• Fix and improve handling of input data in PaintData (#1342)
• Mosaic: Output original data, not discretized (#1371)
• Fix report for OWLinearProjection (#1360, #1361)
• Fix auto-apply in SelectColumns (#1353)
• Fix a RuntimeError in ImageViewer when clearing the scene (#1357)
• Use https to query pypi API (#1343)
• OWBaseLearner: Add name attribute to learner (#1340)
• Pass data attributes after preprocess. (#1333)
• Better support for sparse data (#1306)
• gui.auto_commit: Fix crash when caller gives argument (#1325)
• Fix image viewer runtime error (#1322)
• Better selection indicators in canvas (#1308)
• Open correct help file for add-on widgets (#1307)

3.3.5 - 2016-06-01

Bugfixes

• Revert hack that caused missing icons in osx build
• Fix installation in environments without numpy installed (#1291)
• Allow running of library test when PyQt is not available (#1289)

3.3.4 - 2016-05-27

Enhancements

• Install add-on by dragging zip/tgz/wheel onto the addons dialog (#1269)
• Added missing reports (#1270, #1271, #1272, #1273, #1279)
• Add auto-apply checkboxes to learner dialogs (#1263)
• Sort numeric values as numbers in Table (#1255)
• Open dragged files in OWFile (#1176)
• Support context cloning in FeatureConstructor and SelectRows (#1196)

Bugfixes

• Depend on scikit-learn>=0.17 (#1277)
• Fix installation problem on windows (#1278)
• Fix crash in K-means when silhouette cannot be computed (#1247)
• Fix crash in Distributions on empty data (#1246)
• Reset outputs in MergeData (#1240)
• Compute distances between constructed Instances (#1242)
• Fix links in Changelog (#1244)

3.3.3 - 2016-05-03

Bugfixes

• Revert installation of desktop launcher on Linux (#1218)
• Fix a crash when learner is connected to file (#1220)

3.3.2 - 2016-04-22

Enhancements

• New preprocessors ReliefF and FCBF (#1133)
• New feature scorers ANOVA, Chi2 and Univariate Linear Regression (#1125)
• Mosaic plot can display numeric attributes (#1165)
• Sheet selection for excel files in File widget (#1164)
• Check code quality with pylint on Travis (#1121)
• Improve PyQt5 forward compatibility (#1029)
• Include default datasets in File widget (#1174)
• Install desktop launcher on linux (#1205)

Bugfixes

• Fix a bug in nested transformation of instance (#1192)
• Fix vizrank's crash when pair had no valid data (#1189)
• Save Graph doesn't save axes (#1134)
• Open included tutorials with correct dataset (#1169)
• Disable bsp index on the main canvas scene (#1168, #1173)
• Fix FeatureConstructor crash with Python 3.5 (#1157)
• Include feature names in Rank Widget report (#1022)
• Decrease memory consumption in PCA (#1150)
• Fix dragging of treshold in PCA widget (#1051)
• Save TimeVariable in ISO 8601 format (#1145)
• Allow use of feature metadata in MDS (#1130)
• OWSelectColumns: fix drag and drop for features with Unicode names (#1144)
• Warn when setting values are not present on instance (#1139)
• Fix printing of Table with a TimeVariable (#1141)
• Fix Test & Score widget report (#1138)

3.3.1 - 2016-03-24

Enhancements

• Rank widget outputs scores
• SGD Regression widget: Fixed layout and added reporting

Bugfixes

• Windows installer: update pip on target system if required

3.3 - 2016-03-18

Enhancements

• Changed layout of File widget
• Distance matrix widget
• Meta attributes in Sieve and Mosaic
• New type of variable: Time variable
• Report for Distance Transformation widget
• Report for Linear Regression widget
• Report for Univariate Regression (fixes #1080)
• score.FCBF: a Fast Correlation-Based Filter for feature selection
• Sieve enhancements
• Silhouette Plot widget
• Venn Diagram: Add option to output unique/all instances.
• Widgets for saving and loading distances

Bugfixes

• breast-cancer.tab: change type of tumor-size column (fixes #1065)
• Color: Do not resize columns in continuous table to contents (fixes #1055)
• Exporting graphs to dot format
• OWDistributions: Do not remove constant attribute and do not draw if there is no data
• OWRank: Give name to Scores output table
• OWRank no longer crashes when additional learners are available
• ReliefF: Support for missing target values
• Report: Fix crash on reporting tables
• RF without pruning by default

Documentation

• Update build/install/contributing READMEs
• Update documentation in widget.rst

3.2 - 2016-02-12

• Finalized Orange 3.2, switched to stable(r) release cycles

0.1 - 1996-10-10

• Initial version based on Python 1.5.2 and Qt 2.3