Documentation for automated readers
A curated documentation index is available at: https://grafana.com/llms.txt
A complete documentation index is available at: https://grafana.com/llms-full.txt
These indexes can help with page discovery before fetching individual documents.
This page is also available in Markdown, which may be easier for automated readers and AI tools to parse than HTML. The Markdown version is available at https://grafana.com/docs/grafana/v8.4/panels/format-data/map-a-regular-expression.md, or by sending Accept: text/markdown to https://grafana.com/docs/grafana/v8.4/panels/format-data/map-a-regular-expression/. For broader documentation discovery, the curated index is available at https://grafana.com/llms.txt and the complete index is available at https://grafana.com/llms-full.txt.
Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.
Map a regular expression
Map a regular expression when you want to format the text and color of a regular expression value.
Before you begin
To map a regular expression:
- Edit the panel for which you want to map a regular expression.
- In the panel display options, in the Value mappings section, click Add value mappings.
- Click Add a new mapping and then select Regex.
- Enter the regular expression pattern for Grafana to match.
- (Optional) Enter display text.
- (Optional) Set the color.
- Click Update to save the value mapping.