Drilling down the chart

Consider the following table showing the retail revenue breakdown by month for the US video game industry starting from March 2012 to February 2014:

	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Jan	Feb
2012 - 2013	1.1	0.63	0.52	0.7	0.55	0.52	0.85	0.76	2.55	3.21	0.84	0.81
2013 - 2014	0.99	0.5	0.39	0.59	0.44	0.52	1.08	0.79	2.74	3.28	0.66	0.89

This table shows the revenue (in billions of US dollars) for the video game retail industry. In this example, we will plot a chart to visualize this data. We will draw a column chart that shows the total revenue for the fiscal year starting from March 2012 to February 2014. On clicking on the column, the reader will be shown a more detailed column chart showing the breakdown by months for the respective year.

Note

To use the drilldown feature, you need to include the Highcharts-4.x.x/js/modules/drilldown.js file in your HTML after the Highcharts.js file. Not doing so will not throw any error or...

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