HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r1634:97c09047ff89

documentation for lineandbar example

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doc/src/examples-lineandbarchart.qdoc created 644 +46 0

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	1	/*!
	2	\example examples/lineandbar
	3	\title Line and BarChart Example
	4	\subtitle
	5
	6	The example shows how to combine different charts and set the axes. In the example we combine linechart with
	7	barchart and use category axis as common axis for both.
	8
	9	\image examples_lineandbar.png
	10
	11	Here we create data for our barseries.
	12
	13	\snippet ../examples/lineandbar/main.cpp 1
	14
	15	We create the barseries and append the sets to it.
	16	First value of each set are gropuped together at first category second value to second category and so on.
	17
	18	\snippet ../examples/lineandbar/main.cpp 2
	19
	20	Then we create lineseries and add data to it. To make data match with barchart we use index as an x-value for our line series, so that
	21	first point is at (0,value) second at (1,value) and so on.
	22
	23	\snippet ../examples/lineandbar/main.cpp 8
	24
	25	Here we create the chart and add both series to it.
	26
	27	\snippet ../examples/lineandbar/main.cpp 3
	28
	29	To make chart show series properly, we have to create custom axes for series. If we don't create custom axes, then each series will get scaled to
	30	use maximum area of the chart (like in single series case) and result will be incorrect. With custom axes we set the range of both series to follow same
	31	axis. For x-axis we use QBarCategoryAxis and for y-axis we use QValuesAxis.
	32
	33	\snippet ../examples/lineandbar/main.cpp 4
	34
	35	And we also want to show the legend.
	36
	37	\snippet ../examples/lineandbar/main.cpp 5
	38
	39	Finally we add the chart onto a view.
	40
	41	\snippet ../examples/lineandbar/main.cpp 6
	42
	43	And it is ready to be shown in a window.
	44
	45	\snippet ../examples/lineandbar/main.cpp 7
	46	*/

doc/src/examples.qdoc +1 0

                         <li><a href="examples-customchart.html">Custom chart</a></li>
                         <li><a href="examples-legend.html">Legend</a></li>
                         <li><a href="examples-linechart.html">Line chart</a></li>
+                        <li><a href="examples-lineandbar.html">Line and barchart</a></li>
                         <li><a href="examples-modeldata.html">Model data</a></li>
                         <li><a href="examples-barmodelmapper.html">Bar chart from model</a></li>
                         <li><a href="examples-percentbarchart.html">Percent bar chart</a></li>

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