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/*!
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\example examples/barchart
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\title BarChart Example
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\subtitle
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The example shows how to create simple bar chart. Barchart shows the data in sets as separate bars, which are grouped in categories.
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\image examples_barchart.png
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First we define categories.
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\snippet ../examples/barchart/main.cpp 1
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Data that barchart visualizes, is defined by QBarSet instances. Here we create some sets and append data
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we want to visualize to them.
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\snippet ../examples/barchart/main.cpp 2
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To combine the sets and categories to a chart, we need to create QBarSeries instance. When creating
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the QBarSeries, the categories must be known. Sets can be added later. For example purposes the sets
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are added to series here.
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\snippet ../examples/barchart/main.cpp 3
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Then we create a chart and add the series to it.
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\snippet ../examples/barchart/main.cpp 4
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And we also want to show the legend, so that the data is easier to read.
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\snippet ../examples/barchart/main.cpp 5
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Finally we add the chart onto a view.
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\snippet ../examples/barchart/main.cpp 6
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And it is ready to be shown in a window.
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\snippet ../examples/percentbarchart/main.cpp 7
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*/
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