Highcharts use negative area chart

A negative area chart in Highcharts is a chart type used to represent data with negative values as an area below the x-axis, while positive values are represented as an area above the x-axis. This chart type is useful when you want to show the relationship between positive and negative values, and how they contribute to the total.

To create a negative area chart in Highcharts, you can use the chart.type option set to 'areaspline' or 'area'. The data for the chart should be in a format with both positive and negative values.

Here's an example of how to create a negative area chart in Highcharts using the areaspline chart type:

Highcharts.chart('container', {
  chart: {
    type: 'areaspline'
  },
  title: {
    text: 'Negative Area Chart'
  },
  xAxis: {
    categories: ['Category 1', 'Category 2', 'Category 3', 'Category 4', 'Category 5']
  },
  yAxis: {
    title: {
      text: 'Value'
    }
  },
  series: [{
    name: 'Series 1',
    data: [10, -20, 30, -40, 50]
  }]
});

In this example, we first create a Highcharts chart object and configure it with the following options:

chart.type is set to 'areaspline' to create an areaspline chart
title.text is set to 'Negative Area Chart' to set the main title
xAxis.categories is set to an array of category labels for the x-axis
yAxis.title is used to set the label for the y-axis
series is set to an array of objects with a name and data property to define the series data. The data property contains an array of values for each category, with positive and negative values. The areaspline chart type automatically fills the area below the x-axis for negative values and above the x-axis for positive values.

With these options, you can create a negative area chart in Highcharts. You can also customize the chart further by adding additional data points, setting the color scheme and style of the chart, and adjusting the chart options to best represent your data.

Customizing negative area charts in Highcharts:

Customize appearance by modifying various chart options such as colors, gradients, and tooltips.

Highcharts.chart('container', {
    chart: {
        type: 'area'
    },
    series: [{
        data: [5, -3, 4, -7, 2]
    }],
    // Other configuration options...
});

Highcharts area chart with negative values:

Create an area chart that supports negative values by providing a series with positive and negative data points.

Highcharts.chart('container', {
    chart: {
        type: 'area'
    },
    series: [{
        data: [5, -3, 4, -7, 2]
    }],
    // Other configuration options...
});

Negative area chart API in Highcharts:

Utilize the Highcharts API to interact with negative area charts programmatically.

const chart = Highcharts.chart('container', {
    // Chart configuration
});

// Access chart API methods
chart.series[0].addPoint(-10);

Highcharts area chart series options for negative values:
- Explore series options to customize the appearance and behavior of negative area charts.
```
series: [{
    negativeColor: '#FFA07A', // Set color for negative values
    threshold: -5 // Define threshold for negative values
}],
```
Highcharts inverted negative area chart:
- Invert the axis to create an inverted negative area chart.
```
chart: {
    inverted: true
},
```
Highcharts stacked negative area chart:
- Create a stacked area chart with negative values by setting the stack option.
```
series: [{
    stacking: 'normal', // 'normal' for stacked area
    data: [5, -3, 4, -7, 2]
}],
```

Highcharts dual-axis negative area chart:

Implement a dual-axis chart to display negative values on a separate axis.

yAxis: [{
    // Primary axis options
}, {
    opposite: true, // Secondary axis for negative values
    // Secondary axis options
}],

Highcharts streaming negative area chart:
- Enable streaming for dynamic updates to negative area charts.
```
series: [{
    data: []
}],
```
Highcharts area chart with positive and negative values:
- Display both positive and negative values in an area chart.
```
series: [{
    data: [5, -3, 4, -7, 2]
}],
```
Highcharts area chart tooltip for negative values:
- Customize tooltips to display relevant information for negative values.
```
tooltip: {
    pointFormatter: function () {
        return 'Value: ' + this.y;
    }
},
```

Highcharts area chart gradient for negative values:

Apply gradients to area charts, including negative values, for a visually appealing effect.

series: [{
    color: {
        linearGradient: { x1: 0, x2: 0, y1: 0, y2: 1 },
        stops: [
            [0, '#FFFFFF'],
            [1, '#7CB5EC']
        ]
    },
    data: [5, -3, 4, -7, 2]
}],

Highcharts area chart data format with negatives:
- Format data appropriately to include negative values in the series.
```
series: [{
    data: [5, -3, 4, -7, 2]
}],
```
Highcharts area chart color options for negative values:
- Explore color options to customize the appearance of negative values in the area chart.
```
series: [{
    color: '#FFA07A', // Set color for the entire series
    negativeColor: '#FF6347' // Set color for negative values
}],
```

Highcharts drilldown with negative area chart:

Implement drilldown functionality with negative area charts to provide a detailed view.

drilldown: {
    series: [{
        name: 'Details',
        id: 'details',
        data: [/* Drilldown data with negatives */]
    }]
},