Howto calculate point index(es) using definite Xvalue

[bairog]

I'm looking for function that returns point index(es) having definite Xvalue.
I mean something like

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int[] Indexes TeeChart.Series.CalcIndexForXValue(double XValue)

Is there such a function or I will have to use foreach instead?

BTW I'm using line series if it's matter.

[Narcís]

Hi bairog,

You can use IndexOf as I explained here:

http://www.teechart.net/support/viewtop ... ht=indexof

[bairog]

Hi bairog,
You can use IndexOf as I explained here:
http://www.teechart.net/support/viewtop ... ht=indexof

It is not exactly what I wanted because IndexOf returns only the first point index. If I have for example

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line1.Add(1, 1);
line1.Add(1, 0);

and than use

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line1.XValues.IndexOf(1)

it returns 0.
But I of course expect to get 0 and 1.

So what is the solution?

[Narcís]

Hi bairog,

In that case you can use FindAll, for example:

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		public Form1()
		{
			InitializeComponent();
			InitializeChart();
		}

		private void InitializeChart()
		{
			Steema.TeeChart.Styles.Line line1 = new Steema.TeeChart.Styles.Line(tChart1.Chart);

			line1.Add(0, 2);
			line1.Add(1, 3);
			line1.Add(1, 4);
			line1.Add(2, 5);

			double[] results = Array.FindAll(line1.XValues.Value, IsOne);
		}

		private static bool IsOne(double d)
		{
			return d == 1;
		}

Or for getting the indices you need to do that:

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		public Form1()
		{
			InitializeComponent();
			InitializeChart();
		}

		private void InitializeChart()
		{
			Steema.TeeChart.Styles.Line line1 = new Steema.TeeChart.Styles.Line(tChart1.Chart);

			line1.Add(0, 2);
			line1.Add(1, 3);
			line1.Add(1, 4);
			line1.Add(2, 5);

			System.Collections.ArrayList results = new System.Collections.ArrayList();

			for (int i = 0; i < line1.Count; i++)
			{
				if (line1.XValues[i] == 1.0)
				{
					results.Add(i);
				}
			}
		}