Pie Visuals

Pie charts are circular statistical graphics that show numerical proportion through relative size of slices; the arc length of each slice is proportional to the quantity it represents. In Arcadia Instant, pie charts use a default 'doughnut' representation. However, you can change them to the more traditional closed pie configuration by controlling the arc width of the circle, as described in Changing Arc Width.

The following steps demonstrate how to create a new pie visual representation on dataset Capital Expenditure by Industry. You must first create this dataset, using the steps described in Creating Datasets, from the datafile annual-capital-expenditure-industry.csv.

  1. Start a new visual based on dataset Capital Expenditure by Industry. See Creating Visuals.
  2. In the visuals menu, find and click Pie (row 3, column 5).

    selecting pie chart type
  3. Note that the shelves of the visual changed.

    They are now X, Y, Dimensions, Measures, Tooltips, and Filters.

    Both Dimensions and Measures are mandatory.

    shelves of pie visual type
  4. Populate the shelves from the available fields (Dimensions, Measures, and so on) in the Data menu.

    • Under Dimensions, select industry and drag it over Dimensions shelf on the main part of the screen. Drop to add it to the shelf.
    • Under Measures, select expenditure and drag it over Measures shelf on the main part of the screen. Drop to add it to the shelf.
  5. Click Refresh Visual.

    The pie visual appears.

  6. Click (pencil icon) next to the title of the visualization to edit it, and enter the new name.

  7. Change the title to Capital Expenditures - Pie.
  8. At the top left corner of the Visual Designer, click Save.

  9. [Optional] The default arc width is 80.

    Adjust the arc width to close the hole in the middle of the 'doughnut': from the visual Settings menu, select the Marks tab, and set Arc Width to 0.

    Closing the Hole; Changing Arc Width from 80 to 0

    You can also experiment with changing the thickness of the 'doughnut'. The following image

    Contrasting Arc Widths: 20 and 200

    See Changing Arc Width for details on how to adjust the thickness of the 'doughnut'.

  10. [Optional] You can adjust the default percentage reporting inside the Tooltip: from the visual Settings menu, select the Tooltip tab, and then change the Label for Percentage to Percent of Total and the Decimals included in percentage to 3.

    Changing Tooltip Percentage Reporting Options

    To remove the default percentage reporting, unselect the default Include percentage of total in tooltip.

    Removing Percentage Reporting from Tooltip

    See Customizing Tooltip.