Configure a polar area chart

A polar area chart uses a polar coordinate system in which each category occupies an equal angle and the radius of each segment represents the category's value. You can add a polar area chart to a dashboard to compare proportions across categories.

Prerequisites

You have collected data. For more information, see Collect text logs from servers.
You have created an index. For more information, see Create indexes.
You have created a dashboard. For more information, see Create a dashboard quickly.

Overview

Query and analyze data: Run query statements in the Simple Log Service console to retrieve, aggregate, and analyze logs.
Configure a polar area chart: Add a polar area chart to a dashboard to visualize your data.

Step 1: Query and analyze data

Log on to the Simple Log Service console. In the Projects section, click the project you want.
In the left-side navigation pane, click Log Storage. In the Logstores list, click the target Logstore.
Enter the following query statement and click Search & Analyze to view the logs.
```
* | SELECT COUNT(*) as c, request_time group by request_time 
```

Step 2: Configure a polar area chart

In the left-side navigation pane, choose Dashboard > Dashboards. In the Dashboard list, click the target dashboard. In the upper-right corner, click Edit. In edit mode, choose Add > Add Chart.
In the right-side panel, select General Configurations > Chart Type > . On the left side of the page, configure the time range, Logstore, and query statement. Click Apply at the top of the page to preview the chart.
- General Configurations > Pie Chart Configurations > Pie Chart Type: Select Polar Area Chart.
- General Configurations > Pie Chart Configurations > Scale Text Format: Select Percentage to display the scale text in percentage format, such as 1.98%.
- General Configurations > Pie Chart Configurations > Show Scale Text: Enable this option to display scale text on the chart.
For example, set the Logstore to website_log and the query statement to * | SELECT COUNT(*) as c, request_time group by request_time.