DataPreprocessing Enhancements

[pfleck]

This ticket contains smaller visual enhancements of the preprocessing views.

This ticket depends on #2713.

• moved DataTable/ScatterPlotControl out of DataTable/ScatterPlotView
• introduced regression curves in scatterplot
  

This ticket depends on #2715.

• introduce Histogram aggregation

Enhancements

• ViewHost/ViewShortcut usage
  • Remove ViewHost icons for the ViewShortcuts
    • Split Single- and Multi-Scatterplot
  • Remove “View Shortcuts” grouping box
  • Doubleclick a ViewShortcut should not reset the state in the new view
• PreprocessingCheckedItemView
  • Hide Move, Add, Delete buttons
  • Add Select Input/Target, All and None as Buttons (checkboxes with tooltips)
    • Remove context menu instead
• DataGrid + Statistics
  • Show/Hide columns and rows
    • Check All, Input/Target, None Variables option
    • Initially only Input/Target variables should be checked
• DataCompletnessChart
  • Remove title
  • Move legend to top (column style)
• Scatterplot
  • Better default axis ranges (Bogdans helper functions)
  • Axis description instead of legend
  • Manual axis-range (also for linechart) (currently via config dialog)
• MultiScatterplot
  • X-axis labels vertical

New features

• Distinguish Color and Grouping option in scatterplot
  • Current “Color” feature becomes “Grouping”
  • “Color” should be possible for all features, using the Color Gradient
• Scatterplot
  • Add slider for changing point size (currently via config dialog)
  • Add regression line and add option to show/hide (implemented in #2713)
• MultiScatterplot
  • Add (better) tooltips (are legend tooltip in #2713)
    • Add correlation coefficient to scatterplot (visible in tooltip of legend)
• Histogram + MultiLinechart
  • Add chart size sliders (as in MultiScatterplot)
    • or column count?
• Feature Correlation Matrix
  • Check All, Input/Target, None Variables option
• New Button should open a “are you sure current data is deleted” dialog

[pfleck]

r14440 created branch

r14441 Copied plugins.

[pfleck]

r14444 reverse merged r14441 because local changes were accidentally included in the branch.

[pfleck]

r14445 Branched DataPreprocessing plugins. Adapted build paths and references.

[pfleck]

r14446 Removed the PreprocessingScatterPlotView and use the HL ScatterPlotControl instead.

[pfleck]

r14459

• Removed the PreprocessingDataTable and PreprocessingDataTableView and use dhe HL DatatTableControl instead.
• Moved and refactored some code of PreprocessingChart and moved unnecessary code from base classes to actual derivative classes.

Some features of the PreprocessingDataTableView are included in the regular DataTableView in #2715.

[pfleck]

r14460 Fixed missing resx in csproj.

[pfleck]

r14462

• Added a separate MultiScatterPlot entry and removed the ViewHost views-icon instead.
• Moved legend of DataCompletenessChart to the top and removed the title instead.

[pfleck]

r14467

• Removed some groupboxes in ViewShortcutListView.
• Removed unnecessary IViewChartShortcut
• Split ScatterPlot Multi and Single in to separate contents.
• Renamed Color-combo box in Scatterplot to "Group".

[pfleck]

r14470

• Fixed bugs with double-click on view shortcut.
• Reuse visual properties for single scatterplot.

[pfleck]

r14472 Better initial axis intervals for scatterplots.

[pfleck]

r14473 Improved default y-axis for line charts.

[pfleck]

r14474

• Improved legend description for grouped histogram and scatterplots.
• Fixed initial size of points for scatterplots.
• Added correlation calculation for scatterplots (not used yet).

[pfleck]

r14495

• Fixed initial point size for scatterplots.
• Reuse the visual properties of the old data row if a single variable is changed in the ScatterPlotSingleView

[pfleck]

r14511

• Added Check Inputs/All/None buttons instead of showing disabled buttons of the ItemCollectionView.
• Removed the PreprocessingCheckedItemListView. A standard ListView is used instead.
• Fixed slow updating when simultaneously (un-)checking multiple variables in the chart views. (currently only works by using the new buttons)

[pfleck]

r14514

• Added a VerticalLabel for the multi-scatterplot.
• Added regression options for single- and multi-scatterplot

[pfleck]

r14512 Added an option for the preprocessing scatterplot to use a color gradient instead of the chart color palette.

[pfleck]

r14525

• Added suggestion feature for singlescatterplotview.
• Shows NaN groups in scatterplot (black if gradient is selected).
• Only enables input variables in DataGridContentView per default.
• Added missing resx file (gradient image).

[pfleck]

r14545

• Uses StringMatrix for statistics instead of winforms datagrid.
• Precheck input/target variables only for statistics.

[pfleck]

r14546 Added shortcuts for select input/all/none variables in datagrid and statistics.

[pfleck]

r14578 Fixed wrongly positioned options in histogram view.

[mkommend]

r14579: Refactored histogram view and content to support grouping by string and datetime variables.

[mkommend]

r14580: Changed initialization of caches to avoid NullReferenceExceptions.

[mkommend]

r14581: Refactored get variables for grouping (extracted method to another class).

[pfleck]

r14583

• Added histogram aggregation option.
• Show all columns in data grid per default.

[mkommend]

r14723: Updated branch with most recent trunk changes.

[mkommend]

Testing

• View shortcuts should have more descriptive names and use spaces instead of camel case, for example "Line chart" instead of "LineChart".
• All multi XXX chart should support opening an individual chart in a new tab by double clicking them
• Data grid
  • What is the point of showing no variables? Especialle because the show column context menu cannot be opened anymore.
  • Spacing between row / column count & action button should be the same as for action buttons & the show variables
  • Show Variables GroupBox just as label or centered. Currently it looks slightly odd.
• Statistics
  • Horizontally listed columns look much better.
  • However, would it be possible to configure the direction (horizontally vs vertically)
  • Show Variables GroupBox should be layouted vertically to use the available space better.
  • The datagrid shows per default all columns, whereas statistics only show the inputs + target. Per default all variables should be shown in the data grid and statistics view, but non-inputs should be highlighted maybe italic.
• Line chart
  • Check and uncheck all variables have unintuitive icons. Can't you use a checked and unchecked box? (Applies to the histogram as well).
  • Reuse the icons for the data grid and statistics as well?
  • Size / Column count slider is missing. (Applies to the histogram as well).
• Histogram
  • Title font is increased when enable grouping.
  • Aggregation options are pretty cool.
  • There should be an option to order the legend alphabetically instead of based on the occurance in the data(comment:47).
• Scatter plot
  • It should be possible to change the point size and transparency of the data points. (Applies to the multi scatter plot as well).(comment:45)
  • More reasonable default text size.
• Multi Scatter plot
  • It should only have one size slider instead of two separate ones for width and height

Review Comments

• Chart classes should be sealed and members should be private (e.g. LineChartView). (will be done in a separate ticket on general DataPreprocessing architecture overhaul)
• Commented code should be removed (PreprocessingChartView).(comment:50)
• Remove resx files (ScatterPlotSingleView)(resx in ScatterPlotSingleView contains the gradient image)

[mkommend]

r14724: Adapted data preprocessing scatter plot to allow grouping of string variables.

[mkommend]

r14725: Added grouping for multi scatter plot view.

[pfleck]

r14902

• Changed chart sizing to absolute values (pixels).
• Added chart sizing to Linechart and Histogram.