Example 124: Scientific Graph showing programmatic horizontal zooming

1// This example builds upon the basic CreateSimpleSGraph '100' example chart //
2CreateSimpleSGraph(Pesgo1);
3 
4//! Zoom logic here.  It's important that if using MultiAxesSubsets //
5//! that AllowZooming is set to PEAZ_HORIZONTAL to programmatically zoom. //
6Pesgo1.PeUserInterface.Allow.Zooming = AllowZooming.Horizontal;
7Pesgo1.PeUserInterface.Scrollbar.ScrollingHorzZoom = true;
8 
9// Select desired zoom extents and enable zoomed mode //
10Pesgo1.PeGrid.Zoom.MinX = 40000;
11Pesgo1.PeGrid.Zoom.MaxX = 60000;
12Pesgo1.PeGrid.Zoom.Mode = true;
13 
14// Re-pass the data, adding more data //
15Pesgo1.PeData.Subsets = 2;
16Pesgo1.PeData.Points = 100000;
17 
18// Prepare data in temp arrays
19float[] MyYData = new float[200000];
20float[] MyXData = new float[200000];
21int k, j;
22for (j = 0; j <= 99999; j++)
23{
24    MyXData[j] = j + 1;
25    MyYData[j] = Convert.ToInt32(Math.Sin(0.0003 * j) * 500);
26    MyXData[100000 + j] = j + 1;
27    MyYData[100000 + j] = Convert.ToInt32(Math.Sin(0.00023 * j) * 500);
28 
29}
30// Change some of the data so we can see some variations in data
31for (j = 0; j <= 99000; j = j + 1000)
32{
33    for (k = 0; k <= 300; k++)
34    {
35        MyYData[j + k] = Convert.ToInt32(MyYData[j + k] - 50 + (Rand_Num.NextDouble() * 100));
36        MyYData[100000 + j + k] = Convert.ToInt32(MyYData[j + k] - 50 + (Rand_Num.NextDouble() * 100));
37        MyYData[j + k] += (float)Math.Sin(0.00033F * j) * 300.0F;
38    }
39}
40// Perform the transfer of data //
41Pesgo1.PeData.X.FastCopyFrom(MyXData, 200000);
42Pesgo1.PeData.Y.FastCopyFrom(MyYData, 200000);
43 
44Pesgo1.PeGrid.MultiAxesSubsets[0] = 1; // 1 subset on first axis
45Pesgo1.PeGrid.MultiAxesSubsets[1] = 1; // 1 subset on second axis
46 
47// Set Various Other Properties //
48Pesgo1.PeColor.BitmapGradientMode = true;
49Pesgo1.PeColor.QuickStyle = QuickStyle.LightLine;
50 
51Pesgo1.PeColor.SubsetColors[0] = Color.FromArgb(255, 30, 170, 170);
52Pesgo1.PeColor.SubsetColors[0] = Color.FromArgb(255, 170, 170, 30);
53Pesgo1.PePlot.Method = SGraphPlottingMethod.Line;
54Pesgo1.PeLegend.SubsetLineTypes[0] = LineType.MediumSolid;
55Pesgo1.PeString.TextShadows = TextShadows.NoShadows;
56Pesgo1.PeLegend.Style = LegendStyle.OneLineInsideAxis;
57 
58Pesgo1.PeGrid.WorkingAxis = 0;
59Pesgo1.PeString.YAxisLabel = "";
60Pesgo1.PeGrid.WorkingAxis = 1;
61Pesgo1.PeString.YAxisLabel = "";
62Pesgo1.PeGrid.WorkingAxis = 0;
63 
64Pesgo1.PePlot.ZoomWindow.Show = true;
65 
66// Generally call ReinitializeResetImage at end **'
67Pesgo1.PeFunction.ReinitializeResetImage();
68Pesgo1.Invalidate();
69// Optionally call Pesgo1.Refresh() if you are not seeing changes immediately