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grafana/docs/sources/panels/format-data/map-a-regular-expression.md
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2022-01-18 09:14:59 -05:00

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title = "Map a regular expression"
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# 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:
- [Add a panel to a dashboard]({{< relref "../working-with-panels/add-panel.md" >}}).
To map a regular expression:
1. Edit the panel for which you want to map a regular expression.
1. In the panel display options, in the **Value mappings** section, click **Add value mappings**.
1. Click **Add a new mapping** and then select **Regex**.
1. Enter the regular expression pattern for Grafana to match.
1. (Optional) Enter display text.
1. (Optional) Set the color.
1. Click **Update** to save the value mapping.