2022-05-26 10:06:25 -05:00
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---
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aliases:
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- /docs/grafana/latest/panels/format-data/map-a-special-value/
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- /docs/sources/panels/format-data/map-a-special-value/
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title: Map a special value
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weight: 50
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---
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2022-01-18 15:06:27 -06:00
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# Map a special value
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Map a special value when you want to format uncommon, boolean, or empty values.
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## Before you begin
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2022-06-02 11:57:22 -05:00
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- [Add a panel to a dashboard]({{< relref "../working-with-panels/add-panel/" >}}).
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2022-01-18 15:06:27 -06:00
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**To map a special value**:
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1. Edit the panel for which you want to map a special value.
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1. In panel display options, locate the **Value mappings** section and click **Add value mappings**.
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1. Click **Add a new mapping** and then select **Special**.
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1. Select the special value for Grafana to match. Options include:
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- Null
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- NaN (Not a Number)
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- Null + NaN
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- True
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- False
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- Empty
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1. (Optional) Enter display text.
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1. (Optional) Set the color.
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1. Click **Update** to save the value mapping.
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