Configure a radar chart-Simple Log Service(SLS)-阿里云帮助中心

Radar charts visualize multidimensional data, making it easy to compare multiple data series across the same set of dimensions.

Overview

A radar chart is ideal for comparing multiple data series across the same dimensions.

For example, a query returns four columns: request_method, total, avg_time, and avg_length, representing the total requests, average response time, and average response length for each HTTP method (HEAD, PUT, POST, GET, and DELETE). A radar chart can compare these metrics side by side.

The following chart shows how these metrics compare across request methods. 雷达图

To add a chart to a dashboard, see Add a statistical chart to a dashboard.

Try it out

The SLS Playground provides a built-in radar chart demo to help you quickly get started. You can click Radar chart to try it.

Important

The data in SLS Playground is for demonstration purposes only. Do not use it in a production environment.

Common settings

Configure global display properties for the radar chart.

Basic settings

Parameter	Description
Title	The title of the radar chart.
Display Title	Turn on this switch to display the title on the chart.
Display Border	Turn on this switch to display a border around the chart.
Display Background	Turn on this switch to apply a background color to the chart.
Display Time	Turn on this switch to display the query time on the chart.
Fixed Time	Turn on this switch to fix the query time range. When enabled, the time range is not affected by the global time setting of the dashboard.

Standard settings

Parameter	Description
Format	The display format of numeric values.
Unit	The unit of numeric values.
Number of Digits after Decimal Point	The number of decimal places for numeric values.
Display Name	A custom display name applied to all legend items. To name a specific item, use the field settings.
Color Scheme	The color scheme for the radar chart. Built-in: Use the built-in color palette. Solid: Select a single color.

Query and analysis settings

Parameter	Description
Category	The field used to categorize data.
Value Column	The field that contains the numeric values for the chart.

Radar chart settings

Parameter	Description
Radar chart type	The shape of the radar chart. Valid values: Polygon and Circle.

Graphics settings

Parameter	Description
Point Size	The size of data points on the chart.
Line Width	The width of connectors on the chart.

Legend settings

Parameter	Description
Display Legend	Turn on this switch to display the legend on the chart.
Legend Position	The position of the legend.
Actions	The action triggered when a user clicks a legend item. Single: Displays only the clicked data series. Switch: Hides the clicked data series. Click the item again to show it.
Maximum width (height)%	The maximum width or height of the legend, expressed as a percentage of the chart area.

Variable substitution

Parameter	Description
Variable substitution	Variable substitution adds a variable-type filter to the chart. After configuration in General configurations, a filter appears in the upper-left corner of the chart. When you select a value, Simple Log Service replaces the variable in the query statement and reruns the analysis. Example 2: Set variable substitution.

Documentation link

Parameter	Description
Add Documentation Link	A custom documentation link or description that appears in the upper-right corner of the chart.

Field settings

Customize the visualization of a specific query result or column. For configuration item descriptions, see Common settings.

On the Field Configuration tab, you can set colors, widths, and other connector properties per column. The following examples show two field configurations.

A > avg_length: Configures the avg_length column from Query A. The connector color is pink, the connector width is 5, and the point size is 8.
A > avg_time: Configures the avg_time column from Query A. The connector width is 3, and the point size is 5.

Drill-down events

Drill-down events enable deeper analysis on a specific field or query. Available events include opening a Logstore, a saved search, a dashboard, a trace analysis, or trace details, and creating a custom HTTP link. For more information, see Add drill-down events to a dashboard.

For example, A > avg_length sets a drill-down event for the avg_length column from Query A. If you set this event to Open Logstore, clicking any point on the pink connector lets you select Open Logstore to navigate to the specified Logstore.