> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tilebox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DatapointDecoder.Unmarshal

```go theme={"system"}
func (d datasets.DatapointDecoder) Unmarshal(
    descriptor *datasets.DatapointDescriptor,
    data []byte,
) (map[string]any, error)
```

Decode a raw protobuf datapoint into a JSON-like map with configurable protobuf decoding options.

## Parameters

<ParamField path="descriptor" type="*datasets.DatapointDescriptor" required>
  The descriptor returned by [`NewDatapointDescriptor`](/api-reference/go/datasets/NewDatapointDescriptor).
</ParamField>

<ParamField path="data" type="[]byte" required>
  The raw protobuf datapoint bytes returned by a datapoint query.
</ParamField>

## Decoder options

<ParamField path="AllowPartial" type="bool">
  Allow messages that are missing required fields.
</ParamField>

<ParamField path="DiscardUnknown" type="bool">
  Ignore unknown fields in the raw protobuf message.
</ParamField>

<ParamField path="Resolver">
  Override the resolver used to look up message and extension types.
</ParamField>

<ParamField path="RecursionLimit" type="int">
  Limit how deeply nested messages may be decoded. A zero value uses the protobuf default.
</ParamField>

## Returns

A map of datapoint fields, or an error if the raw datapoint cannot be decoded.

<RequestExample>
  ```go Go theme={"system"}
  decoder := datasets.DatapointDecoder{
      DiscardUnknown: true,
  }

  datapoint, err := decoder.Unmarshal(descriptor, data)
  if err != nil {
      return err
  }
  ```
</RequestExample>