/*!
    \example examples/barchart
    \title BarChart Example
    \subtitle

    The example shows how to create simple bar chart. Barchart shows the data in sets as separate bars, which are drawn at the x-axis to the position defined by data.

    \image examples_barchart.png
	
    Data that barchart visualizes, is defined by QBarSet instances. Here we create some sets and append data
    we want to visualize to them. Note that first and third QPointF in each set have smaller intervals at their x coordinates. This will be reflected in the chart.

    \snippet ../examples/barchart/main.cpp 1

    To combine the sets to a chart, we need to create QBarSeries instance. Then we append our barsets to the series.

    \snippet ../examples/barchart/main.cpp 2
    
    Next we create a chart and add the series to it.

    \snippet ../examples/barchart/main.cpp 3

    We want to have the legend displayed at the bottom of the chart. Also we turn on the nice numbers algorithm on for y-axis.

    \snippet ../examples/barchart/main.cpp 4

    Finally we add the chart onto a view.

    \snippet ../examples/barchart/main.cpp 5

    And it is ready to be shown in a window.

    \snippet ../examples/percentbarchart/main.cpp 6
*/