/// <summary>
/// Get or create a linear numeric axis in the correct dimension.
/// </summary>
/// <param name="orientation">Dimension of the axis to create.</param>
/// <param name="oldAxis">
/// Old value of the axis in this dimension.
/// </param>
/// <returns>New value of the axis in this dimension.</returns>
private IRangeAxis GetAxis(AxisOrientation orientation, IRangeAxis oldAxis)
{
// Check the existing axes for a potential axis
IRangeAxis axis =
(from IRangeAxis a in SeriesHost.Axes.OfType<IRangeAxis>()
where a.Orientation == orientation
select a)
.FirstOrDefault();
if (axis == null)
{
// Create a new axis if not found
axis = new LinearAxis
{
Orientation = orientation,
};
}
if (oldAxis != axis)
{
// Unregister any existing axis
if (oldAxis != null)
{
SeriesHost.UnregisterWithAxis(this, oldAxis);
oldAxis.Invalidated -= OnAxisInvalidated;
}
// Register the new axis
SeriesHost.RegisterWithAxis(this, axis);
axis.Invalidated += OnAxisInvalidated;
}
return axis;
}
/// <summary>
/// Generates value/value Series samples.
/// </summary>
/// <param name="panel">Panel to add the generated Charts to.</param>
/// <param name="seriesConstructor">Function that returns a Series instance for each sample.</param>
public static void GenerateDateTimeValueSeriesSamples(Panel panel, Func<Series> seriesConstructor)
{
Scenario[] scenarios = new Scenario[]
{
new Scenario { Title = "Value by Date", ItemsSource = _dynamicDateItemsSource, DependentValueBinding = new Binding("Second"), IndependentValueBinding = new Binding("First") },
};
Action<Chart> chartModifier = (chart) =>
{
IAxis dateAxis = new DateTimeAxis { Orientation = AxisOrientation.Horizontal };
chart.Axes.Add(dateAxis);
IAxis valueAxis = new LinearAxis { Orientation = AxisOrientation.Vertical, Minimum = 0, Maximum = 20, ShowGridLines = true };
chart.Axes.Add(valueAxis);
};
GenerateSeriesSamples(panel, seriesConstructor, scenarios, chartModifier);
}
