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# Mixed Chart Types
With Chart.js, it is possible to create mixed charts that are a combination of two or more different chart types. A common example is a bar chart that also includes a line dataset.
Creating a mixed chart starts with the initialization of a basic chart.
```javascript
var myChart = new Chart(ctx, {
type: 'bar',
data: data,
options: options
});
```
At this point we have a standard bar chart. Now we need to convert one of the datasets to a line dataset.
```javascript
var mixedChart = new Chart(ctx, {
type: 'bar',
data: {
datasets: [{
label: 'Bar Dataset',
data: [10, 20, 30, 40]
}, {
label: 'Line Dataset',
data: [50, 50, 50, 50],
// Changes this dataset to become a line
type: 'line'
}],
labels: ['January', 'February', 'March', 'April']
},
options: options
});
```
At this point we have a chart rendering how we'd like. It's important to note that the default options for a line chart are not merged in this case. Only the options for the default type are merged in. In this case, that means that the default options for a bar chart are merged because that is the type specified by the `type` field.
{% chartjs %}
{
"type": "bar",
"data": {
"labels": [
"January",
"February",
"March",
"April"
],
"datasets": [{
"label": "Bar Dataset",
"data": [10, 20, 30, 40],
"borderColor": "rgb(255, 99, 132)",
"backgroundColor": "rgba(255, 99, 132, 0.2)"
}, {
"label": "Line Dataset",
"data": [50, 50, 50, 50],
"type": "line",
"fill": false,
"borderColor": "rgb(54, 162, 235)"
}]
},
"options": {
"scales": {
"yAxes": [{
"ticks": {
"beginAtZero": true
}
}]
}
}
}
{% endchartjs %}
## Drawing order
By default, datasets are drawn so that first one is top-most. This can be altered by specifying `order` option to datasets. `order` defaults to `0`.
```javascript
var mixedChart = new Chart(ctx, {
type: 'bar',
data: {
datasets: [{
label: 'Bar Dataset',
data: [10, 20, 30, 40],
// this dataset is drawn below
order: 1
}, {
label: 'Line Dataset',
data: [10, 10, 10, 10],
type: 'line',
// this dataset is drawn on top
order: 2
}],
labels: ['January', 'February', 'March', 'April']
},
options: options
});
```
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