# Source: https://docs.datadoghq.com/actions/app_builder/components/custom_charts.md

---
title: Custom Charts
description: >-
  Create custom charts in apps using Vega-Lite specifications to visualize data
  from queries with various chart types and styles.
breadcrumbs: Docs > App Builder > Components > Custom Charts
---

# Custom Charts

{% callout %}
# Important note for users on the following Datadog sites: app.ddog-gov.com

{% alert level="danger" %}
This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site). ().
{% /alert %}

{% /callout %}

This page provides an example of how to use the custom chart component in your App Builder apps.

The basic workflow for creating a custom chart is as follows:

1. Create or choose a query that contains the data you want to graph.
1. Add the custom chart component and choose a chart style from the App Builder UI or the [Vega-Lite example gallery](https://vega.github.io/vega-lite/examples/).
1. Replace the values in the example with your query data.

Alternatively, you can use Bits AI to get started with a custom chart:

1. Click the **Build with AI** icon (**{% icon name="icon-bits-ai" /%}**).
1. Enter a custom prompt, or try the prompt `Can you help me create a custom chart?`.

## Example setup flow{% #example-setup-flow %}

The following example shows how to create a histogram chart illustrating Datadog Logs grouped by service.

### Set up your data source{% #set-up-your-data-source %}

1. Click **+ New Query**.
1. Search for "search logs" and choose the Datadog **Search logs** action to create a query called `searchLogs0`.
1. Choose an existing Datadog Account Connection, or create a new one.
1. Under **Inputs**, for **Time period**, choose **Past 2 Days**.
1. Click **Run**.A panel displays the outputs of your query in the bottom-left.
1. Under `logs`, expand `0`, then expand `content`. This shows the available properties for each log.

### Add the custom chart component and choose a chart style{% #add-the-custom-chart-component-and-choose-a-chart-style %}

1. Click **+ All Components** and select **Custom Chart** to add a component called `customChart0`.

1. Click **Show Chart Examples**.

1. Select **Simple Histogram** and click **Confirm**.The following value populates in the Vega Specification:

   ```json
   ${{
       "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
       "data": {
           "url": "https://vega.github.io/editor/data/movies.json"
       },
       "mark": {
           "type": "bar",
           "tooltip": true
       },
       "encoding": {
           "x": {
               "bin": true,
               "field": "IMDB Rating"
           },
           "y": {
               "aggregate": "count"
           }
       }
   }}
```

### Replace example values with your data{% #replace-example-values-with-your-data %}

Replace the auto-populated Vega Specification with the following to change the data source and the value being graphed on the x-axis:

```json
${{
    "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
    "data": {
        "values": searchLogs0.outputs.logs
    },
    "mark": {
        "type": "bar",
        "tooltip": true
    },
    "encoding": {
        "x": {
            "field": "content.service"
        },
        "y": {
            "aggregate": "count"
        }
    }
}}
```

A histogram chart with your Datadog Logs data displays.

## Further reading{% #further-reading %}

- [Components](https://docs.datadoghq.com/service_management/app_builder/components/)
- [Build Apps](https://docs.datadoghq.com/service_management/workflows/build/)

Do you have questions or feedback? Join the **#app-builder** channel on the [Datadog Community Slack](https://chat.datadoghq.com/).