# Create a measure on a stream field
These steps guide you through creating a measure for a field in the stream using the Annotate Stream step.
1. If you have not done so already, complete steps 1-7 in the [Use the Annotate Stream step](/pdia-data-integration/9.3-data-integration/advanced-topics-pentaho-data-integration-overview/work-with-the-streamlined-data-refinery/use-the-streamlined-data-refinery/building-blocks-for-the-sdr/using-the-annotate-stream-step/use-the-annotate-stream-step.md).
2. Select **Create Measure** from the **Actions** menu.
The **Name - Value** table auto-populates with a list of annotation properties for the measure.
3. Enter or edit the values for each annotation component.
| Component | Description |
| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Measure Name** | Enter a name for your annotation. |
| **Aggregation Type** | Specify a format string or choose from a list of aggregation types:- SUM
- AVERAGE
- COUNT
- COUNT\_DISTINCT
- MINIMUM
- MAXIMUM
Note that COUNT and COUNT-DISTINCT are only available for non-numeric fields.
|
| **Format String** | Choose how this field should be formatted, such as currency, general number, or percentage. |
| **Description** | Enter a brief description for the annotation. This description will be available on the Pentaho Server. |
| **Hidden** | Set to `True` to prevent this annotation from displaying as an available measure in Analyzer. When set to `True`, this annotation is included in the model, but it is not visible to users when the model is published and opened in Analyzer. Set to `False` to allow this annotation to display as an available measure in Analyzer. When set to `False`, this annotation is visible to users when the model is published and opened in Analyzer. The **Hidden** property is useful for annotations needed to build a proper data model, but not needed for analytic purposes. For example, if you are in a multi-tenant environment, you may want to hide the **Tenant ID** annotation while still including it in the data model. |
4\. Use the \*\*Previous\*\* and \*\*Next\*\* buttons to navigate through the fields.
5. When finished, click **OK** to save your changes and close the dialog box, or **Cancel** to close the dialog box without saving your annotations.
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