Highcharts Missing Values Area Chart
The following example demonstrates an area chart with missing values.
In the previous chapters, we have learned the basic configuration syntax of Highcharts. Next, let's take a look at other configurations. Add the spacingBottom property to the chart.
Chart Configuration
Set the spacingBottom property of the chart to 30. It represents the spacing interval between charts.
var chart = {
type: 'area',
spacingBottom: 30
};
Example
File name: highcharts_area_missing.htm
<html>
<head>
<meta charset="UTF-8" />
<title>Highcharts 教程 | Example(example.com)</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
$(document).ready(function() {
var chart = {
type: 'area',
spacingBottom: 30
};
var title = {
text: 'Fruit consumption *'
};
var subtitle = {
text: '* Jane\'s banana consumption is unknown',
floating: true,
align: 'right',
verticalAlign: 'bottom',
y: 15
};
var legend = {
layout: 'vertical',
align: 'left',
verticalAlign: 'top',
x: 150,
y: 100,
floating: true,
borderWidth: 1,
backgroundColor: (Highcharts.theme && Highcharts.theme.legendBackgroundColor) || '#FFFFFF'
};
var xAxis = {
categories: ['Apples', 'Pears', 'Oranges', 'Bananas', 'Grapes', 'Plums', 'Strawberries', 'Raspberries']
};
var yAxis = {
title: {
text: 'Y-Axis'
},
labels: {
formatter: function () {
return this.value;
}
}
};
var tooltip = {
formatter: function () {
return '<b>' + this.series.name + '</b><br/>' +
this.x + ': ' + this.y;
}
};
var plotOptions = {
area: {
fillOpacity: 0.5
}
};
var credits = {
enabled: false
};
var series= [{
name: 'John',
data: [0, 1, 4, 4, 5, 2, 3, 7]
}, {
name: 'Jane',
data: [1, 0, 3, null, 3, 1, 2, 1]
}
];
var json = {};
json.chart = chart;
json.title = title;
json.subtitle = subtitle;
json.xAxis = xAxis;
json.yAxis = yAxis;
json.legend = legend;
json.tooltip = tooltip;
json.plotOptions = plotOptions;
json.credits = credits;
json.series = series;
$('#container').highcharts(json);
});
</script>
</body>
</html>
The output of the above example is:
other extensions