Software Siglo XXI

Example 31: Line chart with 1000 points

This sampe code will draw a simple line chart with 1000 points demonstrating that the library is capable of drawing charts with hundreds and thousands of data points.

Steps:

1. Create a new Windows application project (VB.NET)

2. Add Super 2d/3d Graph Library to the toolbox pallete and drag it to Form1.

3. Copy and paste de following code:

Public Class Form1

   Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

   ' Prepare data for 1000 points
   Dim sf As New SeriesFactory
   For k As Integer = 1 To 1000
      sf.AddValue(Rnd() * 100 + 50)
   Next

   ' Setup chart
   With Super2d3dGraph1
      ' Initial setup
      .Style = STYLE2D3D.STYLE2D_LINE
      .ShowValues = False
      .ShowLegend = False
      .ShowDataTable = False
      .Series = sf.Series
      ' Colors
      .SeriesColor = New Color() {Color.Black} ' Colors for points
      .SeriesLineStyle = New Pen() {New Pen(Color.Green)} ' Line styles
      .BackStyle = STYLEBACKGROUND.STYLEBACKGROUND_GRADIENT
      .WallsBackStyle = STYLEWALLBACKGROUND.STYLEWALLBACKGROUND_CHESS
      ' Scale setup (optional)
      .YAxisScaleMode = SCALEMODE.SCALEMODE_FIXED
      .YAxisScaleMinimum = 0
      .YAxisScaleMaximum = 200
      ' Refresh chart
      .RefreshChart()

   End With

End Sub

End Class