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Documented QAbstractSeries axis handling
Documented QAbstractSeries axis handling

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/ doc / src / examples-horizontalbarchart.qdoc
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r1709 /*!
\example examples/horizontalbarchart
\title HorizontalBarChart Example
\subtitle
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r1859 The example shows how to create a horizontal bar chart. QHorizontalBarChart shows the data in sets as separate bars, which are grouped in categories. QHorizontalBarChart works just like
QBarChart, except that the bars are drawn horizontally on the chart.
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\image examples_horizontalbarchart.png
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r1859 The barsets are used in same way in all barcharts.
To illustrate difference between various barcharts, we use same data in examples.
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r1709 Data that barchart visualizes, is defined by QBarSet instances. Here we create the sets and append data
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r1859 to them. The data is appended here with << operator. Alternatively the append method could be used.
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\snippet ../examples/horizontalbarchart/main.cpp 1
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r1859 We create the series and append the barsets to it. The series takes ownership of the barsets. The series groups the data from sets to categories.
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r1709 First value of each set are gropuped together at first category second value to second category and so on.
\snippet ../examples/horizontalbarchart/main.cpp 2
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r1859 Here we create the chart object and add the series to it. We set the title for chart with setTitle and then turn on animations of the series by calling
setAnimationOptions(QChart::SeriesAnimations)
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\snippet ../examples/horizontalbarchart/main.cpp 3
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r1859 To have categories displayed on axis, we need to create a QBarCategoryAxis for that. Here we create a category axis with list of categories and
set it to be the y-axis of the chart. The chart takes ownership of axis. For x-axis we use default axis, which is created and scaled to series data
by calling createDefaultAxes of the chart. Note that the call for createDefaultAxes must be before we set the category axis. Otherwise the default axis will
override the category axis.
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\snippet ../examples/horizontalbarchart/main.cpp 4
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r1859 We also want to show the legend. To do that, we get the legend pointer from chart and set it to visible. We also place the legend to bottom of the chart by setting it's alignment
to Qt::AlignBottom.
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\snippet ../examples/horizontalbarchart/main.cpp 5
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r1859 Finally we add the chart onto a view. We also turn on the antialiasing for the chartView.
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\snippet ../examples/horizontalbarchart/main.cpp 6
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r1859 Chart is ready to be shown. We set the chart to be central widget of the window.
We also set the size for the chart window and show it.
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\snippet ../examples/horizontalbarchart/main.cpp 7
*/