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/*!
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\example examples/groupedbarchart
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\title GroupedBarChart Example
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\subtitle
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The example shows how to create simple bar chart. GroupedBarChart shows the data in sets as separate bars, which are grouped in categories.
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\image examples_groupedbarchart.png
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Data that groupedbarchart visualizes, is defined by QBarSet instances. Here we create the sets and append data
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to them.
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\snippet ../examples/groupedbarchart/main.cpp 1
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We create the series and append the sets to it. The grouped barseries groups the data from sets to categories.
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First value of each set are gropuped together at first category second value to second category and so on.
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\snippet ../examples/groupedbarchart/main.cpp 2
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Then we create a chart and add the series to it.
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\snippet ../examples/groupedbarchart/main.cpp 3
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We define the categories here and add them to the x-axis.
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\snippet ../examples/groupedbarchart/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/groupedbarchart/main.cpp 5
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Finally we add the chart onto a view.
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\snippet ../examples/groupedbarchart/main.cpp 6
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And it is ready to be shown in a window.
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\snippet ../examples/groupedbarchart/main.cpp 7
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*/
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