# CartesianChartHost

[`CartesianChartHost`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-cartesian-chart-host) is the entry point for Cartesian charts. It accepts [`CartesianChart`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-cartesian-chart/) and [`CartesianChartModelProducer`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian.data/-cartesian-chart-model-producer/) instances, facilitates communication between them, and displays the chart. It also handles scroll and zoom and shows a placeholder when no data is available.

```kt
CartesianChartHost(rememberCartesianChart(/* ... */), modelProducer, /* ... */)
```

You can also use a manually created [`CartesianChartModel`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian.data/-cartesian-chart-model/) instance instead of a model producer:

```kt
CartesianChartHost(rememberCartesianChart(/* ... */), model, /* ... */)
```

## Scroll

`CartesianChartHost` accepts [`VicoScrollState`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-vico-scroll-state/) instances, enabling scroll customization and programmatic scrolling. Use [`rememberVicoScrollState`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/remember-vico-scroll-state) to instantiate `VicoScrollState`:

```kt
val scrollState = rememberVicoScrollState(/* ... */)
CartesianChartHost(scrollState = scrollState, /* ... */)
```

[`Scroll`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-scroll/) represents scroll values—either absolute (from zero) or relative (from the current value). [`Scroll.Absolute`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-scroll/-absolute/) and [`Scroll.Relative`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-scroll/-relative/) cover the two cases. The following factory functions are available:

* [`Scroll.Absolute.pixels`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-scroll/-absolute/-companion/pixels)
* [`Scroll.Absolute.x`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-scroll/-absolute/-companion/x)
* [`Scroll.Relative.pixels`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-scroll/-relative/-companion/pixels)
* [`Scroll.Relative.x`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-scroll/-relative/-companion/x)

[`AutoScrollCondition`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-auto-scroll-condition/) defines when to scroll automatically. There are two singletons:

* [`AutoScrollCondition.Never`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-auto-scroll-condition/-companion/-never) (default)
* [`AutoScrollCondition.OnModelGrowth`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-auto-scroll-condition/-companion/-on-model-growth)

You can create custom implementations of `Scroll` and `AutoScrollCondition` for more specific behavior.

## Zoom

`CartesianChartHost` accepts [`VicoZoomState`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-vico-zoom-state/) instances, enabling zoom customization. Use [`rememberVicoZoomState`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/remember-vico-zoom-state) to instantiate `VicoZoomState`:

```kt
val zoomState = rememberVicoZoomState(/* ... */)
CartesianChartHost(zoomState = zoomState, /* ... */)
```

[`Zoom`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-zoom/) defines zoom factors. The following singletons and factory functions are available:

* [`Zoom.Content`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-zoom/-companion/-content)
* [`Zoom.max`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-zoom/-companion/max)
* [`Zoom.min`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-zoom/-companion/min)
* [`Zoom.fixed`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-zoom/-companion/fixed)
* [`Zoom.x`](https://api.vico.patrykandpatrick.com/vico/compose/com.patrykandpatrick.vico.compose.cartesian/-zoom/-companion/x)

You can create custom implementations of `Zoom` for more specific behavior.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://guide.vico.patrykandpatrick.com/compose/cartesian-charts/cartesiancharthost.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.