Radar chart

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 and analysis result contains four columns: request_method, total, avg_time, and avg_length. These columns represent the total number of requests, average response time, and average response length for different HTTP request methods, such as HEAD, PUT, POST, GET, and DELETE. A radar chart can use this data to compare these metrics.

The following radar chart visualizes these metrics for each request method. 雷达图

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

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 radar chart.
Display Border	Turn on this switch to display a border around the radar chart.
Display Background	Turn on this switch to apply a background color to the radar chart.
Display Time	Turn on this switch to display the query time on the radar chart.
Fixed Time	Turn on this switch to fix the query time range. The fixed 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 name for legend items. Applies a single display name 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 radar chart.
Line Width	The width of connectors on the radar chart.

Legend settings

Parameter	Description
Display Legend	Turn on this switch to display the legend on the radar 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	Adds a custom documentation link or description. When configured, this information appears in the upper-right corner of the radar chart.

Field settings

Field settings let you customize the visualization of a single query result or a specific column within the results. For descriptions of the configuration items, see Common settings.

On the Field Configuration tab, you can set different colors, widths, and other properties for the connectors of each column. The following example shows 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 let you perform deeper analysis on a specific field or an entire 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 represents setting a drill-down event for the avg_length column from Query A. If you set the drill-down event for the avg_length column to Open Logstore, you can click any point on the pink connector and then select Open Logstore to navigate to the specified Logstore.