Using chart properties
A chart lets you visualize one or more measures along a dimension or hierarchy. For example, use a chart to compare the sales amount with the sales target for each month. Several different types of charts are available to help you communicate your data effectively.
This article explains how to use some of the key features that are common to all charts.
Related video: DV Common Properties
2. Elements of a chart
The figure below shows the main elements of a chart data visualization.
A data series represents a group of related data points. The figure above shows a bar series and a line series, where each data point is displayed as a bar or a portion of the line.
3. Adding a chart
To add a chart to your dashboard, go to the toolbar, click Data Visualization and then select the type of chart you want.
Next, drag a measure and a hierarchy from a data connector or data cube in the Explore window onto the empty chart. You'll see the chart automatically reconfigured with a left axis, bottom axis, major grid lines, and data points representing the data series.
To interact with the chart, switch to View mode. Go to the bottom axis of the chart and click on a triangle to expand one of the Product hierarchy members (e.g., Bikes). Hover over one of the expanded bars to see a tooltip which shows the corresponding measure and hierarchy values.
You can also right-click (or long-tap) on the chart and use the menu to drill down, drill up, or change the hierarchy level.
4. Re-visualize as a chart
Another way to display a chart is to re-visualize a different type of data visualization as a specific chart type. For example, right-click (or long-tap) on a table visualization, click Re-Visualize from the menu, and then select the chart type you want from a submenu.
If you already have a chart that shows two series (e.g., measures), you can re-visualize one of the series independently. For example, right-click (or long-tap) on the second series. You'll see a selection rectangle around the data points (bars) that correspond to the second series. Click Re-Visualize from the menu, and then select a different chart type.
The second measure (e.g., Target) is now displayed as a line series.
5. Axis properties
Charts are usually configured with a left axis (or y-axis) and a bottom axis (or x-axis). From the Properties window for a selected chart on the canvas, go to the Main \ CHART section to see the list of axes for the chart.
5.1. Invert axes
Under the Main \ CHART properties section of a chart, use the Invert Axes property to switch (or transpose) the horizontal and vertical axes so that bars and areas are drawn horizontally instead of vertically. This option is mostly used on bar charts (including stacked bar and 100% stacked bar) to save space or to make it easier to read long axis labels.
An easier way to turn a bar chart horizontal is to select the chart on the canvas and then click the Horizontal Bars option from the toolbar (or the right-click menu for the chart). This is identical to setting the Invert Axes property to True.
You can change the chart back to normal by clicking Vertical Bars from the toolbar (or the right-click menu).
Each chart axis has a scale which you can set to one of the following types via the Scale Type property:
- Category: Designed for people, places, things or events. Displays values of any type of data, one after the other in sequence.
- Date/Time: Designed for date and time values. Data can be plotted along continuous linear time, even if data is missing.
- Numeric: Designed for numeric data. Displays any type of numeric values.
- Logarithmic: Designed for positive (above zero) numeric data.
If the first or only hierarchy on the bottom (ROWS) axis is date/time, then the chart will set the scale type to Date/Time by default.
A date/time scale does not allow members to be expanded. If you want to have expandable date members on the bottom axis, change the scale type to Category instead.
There's an easy way to switch the scale type between Date/Time and Category. Just right-click (or long-tap) on the chart and select Category Axis, for example (or Date/Time Axis to switch back). This option is also available from the toolbar for a selected chart.
When using the same scale type on multiple axes (either in the same chart or different charts), you can set the axes to have the same range. Select the option Share the scale with another chart or axis, and select the axis that should have the same range.
5.3. Crossing axes
The axis property Cross Other Axis At defines the position at which two axes intersect.
The default setting Auto places the axis intersection at the minimum (usually bottom left corner) unless one of the axes is numeric, in which case the intersection will be at zero.
To set a custom intersection point, select the Value option and indicate a numeric value.
Select the property Keep Elements Along Axis to position tick marks and labels along the axis.
Each axis can show a title that is automatically centered along the axis. A typical usage is displaying the name of the quantity or measure along the left axis (or y-axis).
To set the title for an axis, edit the properties of the axis and go to the Text properties section.
Under AXIS TITLE, use the Title property to enter the text for the title.
Then click Title Style to change how the title is displayed. For example, set the Location property to Along, and the Rotation of the axis title to Clockwise.
To change the formatting or appearance of the labels for axis values, edit the properties of the axis (e.g., the bottom axis) and go to the Text section.
Use the Show Labels property to show or hide the axis labels. When displaying a chart within a scorecard, it may be useful to hide the labels to create a more compact chart.
Under Label Formatting, use the Format property to enter a date format string, for example, which will be applied to each label.
Click Label Style to change the appearance of the labels, such as the font size or color.
Set the Auto Fit property to true in order to arrange as many labels on the axis as possible without overlap. Use the Auto Fit Methods properties to customize the auto fit behavior.
If the axis is categorical and the axis labels can be expanded, use the Expander Color property to change the color of the expander buttons. By default, they take on the same color as the text.
5.6. Tick marks
By default, tick marks are not shown on the axes of a chart. To display them, edit the properties of a chart axis and go to the Ticks section.
Set the Show Tick Marks property to true to display the major (or minor) tick marks.
Click Tick Mark Style to change the appearance of the major (or minor) tick marks.
5.7. Grid lines
To display grid lines corresponding to the left axis, edit the properties of the chart axis and go to the Grid section.
Set the Show Grid Lines property to true to display the major (or minor) grid lines for the left axis.
Click Grid Line Style to change the appearance of the major (or minor) grid lines.
6. Series properties
Charts are automatically configured with data series as you drag and drop measures and hierarchies from the Explore window.
Go to the Main \ CHART properties section to see the list of series for a chart.
6.1. Chart type
Each series has a corresponding Chart Type property which you can set from the Main \ COMMON properties section for the series.
6.2. Data points
To change the color of data points, edit the properties of the series and go to the Look section. Use the Fill property under DATA POINTS.
Additional settings to control the appearance of data points for series may be available, depending on the chart type.
When using a Bubble chart type, you can change the size of the bubbles in the Layout section. Use the properties Bubble Minimum Width and Bubble Maximum Width.
You can apply additional formatting by setting up states and using State Styles. For example, to distinguish between positive and negative bubbles.
Markers are symbols displayed at the location of the Y-value over the data points of any chart type. They make locating this value easier on a chart, and are especially useful for line and area charts to pinpoint the data values along the line or area shape.
To display and customize the markers for a series, edit the properties of the series, click Look, and then scroll down to the MARKERS section.
Set the Show Markers property to true to display the markers (e.g., for a line series).
Adjust the size of each marker with the Marker Width and Marker Height properties.
Choose a shape for the markers using the Marker Shape property.
6.4. Series label
If your chart is not connected to a legend, you'll see a label on the chart corresponding to each series. This default behavior helps you to identify multiple series appearing on a chart.
For example, if you have a measure named Target Sales, you'll see a corresponding label with the text Target Sales attached to one of the data points.
To customize a series label (including its text), edit the properties of the series, click Text, and then click Series Label.
6.5. Data point labels
You can display a label with each data point of a series in order to show the corresponding measure (or Y-axis) value.
First, open the Data Binding Panel for the chart and edit the measure. In the Configure Metric Set Element dialog, enter a numeric format string and a symbol for the measure values (such as a dollar sign).
Edit the properties of the series and go to the Text section.
Click the Labels button to add a new Data Label Settings item. Click this item to edit its properties.
In the Data Label Settings, set the Placement property to Inside so that the data point labels will be displayed within the bars of the chart.
Set the Text property to [Sales], which is a placeholder for showing the Sales measure value.
6.6. Show or hide series
Users viewing a chart can show or hide series from the chart using the context menu.
Right-click the series and select Show Series...
And then simply select the series to show or hide.
Alternatively, you can add a checkbox to the legend, which will control the same functionality.
Simply edit the properties of the series and tick the checkbox for Show Legend Checkbox.
6.7. Tooltip text
To customize the tooltip that appears when you hover over a data point, edit the properties of the corresponding series and go to the Text section.
Update the Tooltip Text property as needed. You can insert regular text as well as placeholders (keywords) such as the name of a measure or hierarchy enclosed in square brackets. See Formatting Text for more details.
7. Selecting data
By default, users viewing a chart can highlight data points either by hovering over them or dragging a selection box.
You can change this behavior in the Look properties of the chart by disabling Hover To Select Points or enabling Click To Select Points.
You can also change the properties of the selection cursor itself by selecting Selection Cursor in the Main properties.
For example, you can disable both Select Horizontally and Select Vertically to prevent the appearance of a selection box.
Another example is to change the Select Action to Zoom In instead of the default Select Data Points, which will automatically zoom the chart to the selection box.
You can also enable Select Cross-Section On Hover to display details about line chart data points located at the mouse's X axis position.