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# RS_Normalize

Normalize the value in the array to \[0, 255]. Uniform arrays are set to 0 after normalization.

## Signatures

```sql theme={"system"}
RS_Normalize (Band: ARRAY[Double])
```

## Parameters

<ParamField body="Band" type="ARRAY[Double]" required>
  The band index.
</ParamField>

## Return type

<ResponseField type="Array<Double>">
  An array of double values.
</ResponseField>

## Example

```sql theme={"system"}
SELECT RS_Normalize(band)
```