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Splunk® Enterprise

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Splunk® Enterprise
8.2.8
Splunk Enterprise version 8.2 is no longer supported as of September 30, 2023. See the Splunk Software Support Policy for details. For information about upgrading to a supported version, see How to upgrade Splunk Enterprise.
This documentation does not apply to the most recent version of Splunk® Enterprise. For documentation on the most recent version, go to the latest release.

Bubble charts

Use a bubble chart to visualize multiple series data in three dimensions. Bubble position represents two dimensions of the data series. Bubble size represents the third dimension.

A bubble chart

Data formatting

To create a bubble chart, start with a search that generates multiple data series. Use this syntax to generate the series.

... | <stats_command> <y-axis_field> <x-axis_field> <bubble_size_field><bubble_color_field>

Generate a bubble chart

  1. Select the bubble chart using the visual editor by clicking the Add Chart button ( The Add Chart button in the editing toolbar. ) in the editing toolbar and either browsing through the available charts, or by using the search option.
  2. Select the chart on your dashboard so that it's highlighted with the blue editing outline.
  3. Set up a new data source by adding a search to the Search with SPL window.
  4. To select an existing data source, close the Configuration panel and reopen it. In the Data Configurations section, click +Setup Primary Data Source and click + Create Ad hoc Search to create a new search from this window. You can also choose a new ID that describes the search better than the default.

Configuration Panel options for bubble charts

You can use the Configuration panel to configure the following bubble chart components.

Title

Give your visualization a name. This is also helpful when searching for individual visualizations in the dashboard definitions. This name is not the same as the automatically assigned unique ID.

Description

Give your visualization a description to explain what the user is viewing.

Data Configurations

Choose an existing ad hoc search or create a new one.

Position & Size
You can use your mouse to change the size or location of the visualization, or the Position & Size section of the Configuration panel for pixel perfect sizing and placement.

Axes

  • Use X Axis title to name your x-axis.
  • Use Y Axis title to name your y-axis.

Legend

  • Use Position to choose the position of the legend.
  • Use Truncation to choose how legend labels are truncated when they overflow the layout boundaries by choosing where to place ellipses (...)

Drilldown
Drilldown for a bubble chart lets users click on a part of the chart to open an internal or external URL.

Code
Select your visualization or its search to view and edit the source code in real-time. You can also change the Visualization ID to a more readable ID to help identify this visualization in the source code.

Use encoding to modify the bubble graph

A single group-by field in the query generates a visualization with all bubbles in the same color. To get series colors with the stats command, use two or more group-by fields. This generates a bubble for each unique combination of fields. The value of the field you choose determines the series color.

For example, the following search generates 4 columns of data in the statistics table

index = _internal sourcetype=splunkd_access | stats count sum(bytes) as "Total Bytes" by status, date_hour | table status date_hour count "Total Bytes"

The four columns can be used to determine the size of the bubbles, the field values of the x and y-axis, and the colors of the bubbles. For example: 

"encoding": {
	"x": "primary[0]",
	"y": "primary[1]",
	"size": "primary[2]",
	"category": "primary[3]"

primary[n-1] (with n equal to the actual order of the columns) represents the order of the field columns. You can also use field column names, for example: 

"encoding": {
	"x": "primary.status",
	"y": "primary.date_hour",
	"size": "primary.count",
	"category": "primary.Total Bytes"

There are additional options that can only be set in the source editor. For a complete list of options available, see: Bubble chart.

Examples

The following graph uses options and settings that are not available in the visual editor. Expand the dashboard definition to view the options and settings used. The search used to generate the chart is

index = _internal sourcetype=splunkd_access | stats count sum(bytes) as "Total Bytes" by status, date_hour | table status date_hour count "Total Bytes"

A bubble graph

Expand

Bubble chart example

Expand this window to see the dashboard definition of the bubble graph.

Source options for bubble charts

While some of these options can be set using the visual editor, there are additional options that can only be set in the source editor for viz.bubble. These options are added to the options field of the visualization stanza. For example, the following example shows the addition of background color and font color settings using a hexadecimal code: 

"viz_25NNIqLF": {
			"type": "viz.bubble",
			"options": {
				"backgroundColor": "#0000FF",
                                "fontColor": "#0000FF"
			},
			"dataSources": {
				"primary": "ds_gcEN4c7Q"
			}
		}


For more details about visualization stanzas, see The source code stanza of a visualization. The following lists the available chart options.

Expand

Bubble chart options

The following options are available for editing bubble charts in the source editor:


Last modified on 23 February, 2022
Bar and column charts   Filler and marker gauges

This documentation applies to the following versions of Splunk® Enterprise: 8.2.1, 8.2.2, 8.2.3, 8.2.4, 8.2.5, 8.2.6, 8.2.7, 8.2.8, 8.2.9, 8.2.10, 8.2.11, 8.2.12

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