# Change the Chart to Pie Chart

After configuring and testing the chart widget and its series, you can change the **chart visualization type** from a **Line chart** to a **Pie chart**.\
This is done by updating specific configuration values in the database tables that control chart rendering.

***

#### Update Chart Type Configuration

To change the chart type from **Line** to **Pie**, update the **`DASHTYPE`** column in the **`DASH_WIDGET_PROP`** table for the corresponding chart record.

Set the value as shown below:

```
DASHTYPE = 'pie'
```

This change defines the overall chart visualization type used by the widget.

***

#### Update Chart Series Type

In addition to updating the chart configuration, the chart **series type** must also be updated.

Update the **`CHART_TYPE`** column in the **`DASH_WIDGET_CHART_PROP`** table for the relevant series record and set the value as:

```
CHART_TYPE = 'pie'
```

This ensures that the data series is rendered correctly using the Pie chart format.

***

#### Verify the Updated Chart

After applying both configuration changes:

1. Open the dashboard page again.
2. Click the **Training** page (or the dashboard menu configured earlier).

***

#### Expected Result

The dashboard now displays the chart in **Pie Chart** format.\
The updated chart represents the **Income comparison between Bangkok and Upcountry**, grouped by quarter, as shown below.

<figure><img src="https://2015371994-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMpDjHWFRUtZ5nJcSfVXd%2Fuploads%2F9kMdLCFEQxgAydrhd5Z7%2Fimage.png?alt=media&#x26;token=5c9d8f3f-1a89-4ebb-adac-500bbf800e0b" alt=""><figcaption></figcaption></figure>

***

#### Summary

By updating:

* `DASH_WIDGET_PROP.DASHTYPE`, and
* `DASH_WIDGET_CHART_PROP.CHART_TYPE`

you can dynamically switch the same dataset between different chart visualizations without recreating the widget.

This flexibility allows the Widget Dashboard to support multiple analytical views using the same underlying data configuration.


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