Highcharts Missing Value Area Chart
The following example demonstrates a missing value area chart.
We have already learned the basic configuration syntax of Highcharts in previous chapters. Next, let's look at other configurations. Add the spacingBottom property in the chart.
Chart Configuration
Set the spacingBottom property of the chart to 30. This represents the spacing interval between charts.
var chart = {
type: 'area',
spacingBottom: 30
};
Example
Filename: highcharts_area_missing.htm
<html>
<head>
<meta charset="UTF-8" />
<title>Highcharts Tutorial | tutorialpro.org(tutorialpro.org)</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 above example will produce the following output: