Polar Charts
The Polar Chart is a variation of a circular graph, useful when relationships between data points are most easily visualized in terms of radiuses and angles. Polar Charts are similar to Pie Charts, but each segment has the same angle: the radius of the segment differs depending on the value. This is often useful to show comparison data like a Pie Chart while also showing a scale of values for context.
Settings
To configure a Polar Chart, open the Report containing the chart, click the ... icon in the top-right corner of the Visual, and select Configure. The left panel has five tabs: Settings, Series, Y-Axis, Legend, and Drilldown. To name the chart, enter a name at the top of the window next to Title.
- Group by: select a Field to use for the x-axis of the chart.
- Sort groups by: choose how to sort groups along the x-axis (Value, Group Ascending, or Group Descending).
- Number of groups to show: the maximum number of individual groups shown.
- Step: display all labels or step by increments. By default the step is calculated automatically; set it to 1 to prevent this.
- Label Rotation: sets the angle of the X-axis group labels. Specific degree defaults to -45 degrees.
- Include other/remaining items: creates a separate group for records not displayed, and allows renaming the column.
- Include empty/null items: creates a separate group for empty or null values. Available for the Group By and Split By columns.
- Split by field: choose a Field to split groups, displaying a second group inside the chart (with sort and sub-group count options).
- Zoom: set the zoom on the x-axis, y-axis, or both.
- Stacking: None, Normal, or Percent. With multiple series, only normal stacking is supported.
- X-Axis title: creates a label for the x-axis.
- Polar Chart: changes the chart's display from a Polar Chart back to the underlying chart type showing the same data.
Series
The Series tab lets you edit the displayed data or add additional series. Four icons at the bottom of the panel are Series, Color, Label, and Delete.
- Add aggregate: adds a new series (the + next to Series 1).
- Value Type: Per-group, Overall, or Literal.
- Value Field: sets the type of aggregate value to calculate for the series.
- Missing Values: skips null or zero values in groupings.
- Series name: changes the name of the series in the legend.
- Series chart type: changes the type of chart being used.
- Y-Axis: choose which y-axis to use, or add a new one.
Color
The Color tab lets you change the display colors for the selected series.
- Auto, Based on Value, Rotate, Shades, and Exact: the same color strategies as other charts.
Labels
The Labels tab lets you change how the data is labeled and displayed.
- Show labels in-line, Label content, Decimal Places, and Tooltip: the same label options as other charts.
Y-Axis
The Y-Axis tab lets you set the label of the y-axis and how data displays based on type and scale.
- Y-Axis: a list of y-axes added to the Visual.
- Axis Title: adds a title to the axis.
- Type: Linear, Logarithmic, Datetime, or Category.
- Minimum and Maximum: sets a minimum and maximum value for an axis.
- Polygon grid lines (Spider Chart): adds polygonal lines between points on the chart.
- Add Axis: adds a new y-axis.
Legend
The Legend tab lets you set if and how a legend is displayed.
- Show legend, Float legend over chart, Vertical Align, Horizontal Align, and Maximum Height: the same legend options as other charts.
Drilldown
The Drilldown tab lets you configure what data, if any, is available to drill down or pivot on from the Visual.
- Enable view data: enables the View data and Pivot by options.
- Pivot by: enables the Pivot by option for the Visual.
- Chart Drilldown: enables the Drilldown by option (All Fields or Selected Fields).