Super 2d/3d Graph Library

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Example 10: Customizing values positioning and appearance


OK, let's start with the first of the tutorials about values.

In this example, I will demonstrate the three different ways of showing your data over the chart. Note, that you also may show the data on a table, the datatable which is shown below the chart if ShowDataTable is set to True.

These are the properties that control the appearance of the values:

  • ShowValues -- if true, values will appear over each graphic item (bar, pie, etc.)
  • ShowDataTable -- if true, a table with all data will appear in the lower area of the chart control
  • ValuesAlignment -- controls the alignment of the numbers on the datatable
  • ValuesBackColor -- background color of labels
  • ValuesColor -- text color
  • ValuesFont -- font for labels
  • ValuesFormat -- string format, like "0", "N", "p", ... (see Visual Studio help for string format codes)
  • ValuesStyle -- transparent or solid rounded background
  • ValuesLocationStyle -- default, inside (for bar charts) or smart (avoid label overlap)

This sample project uses 2 chart objects. One bar chart showing values inside each bar and a pie chart using smart ValuesLocationStyle.

Steps:

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

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

3. Copy and paste de following code:

 
 


Form Code


Imports Super2d3dGraphLibrary

Public Class Form1

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

   Dim v As New Super2d3dGraphLibrary.SeriesFactory
   Dim x As Single

   ' Precalculate some random values
    For k As Integer = 0 To 8
       x = x + Int(Rnd() * 10) + 15
       v.AddValue(x)
   Next

   ' Populate the BAR chart
    With Super2D3dGraph1
       .AutoRefresh = False
       .Title = "ValuesLocationStyle = INSIDE"
       .Style = STYLE2D3D.STYLE2D_BAR
       .ShowDataTable = False
       .ShowLegend = False
       .ValuesLocationStyle = STYLECAPTIONLOCATION.STYLECAPTIONLOCATION_INSIDE
       .ValuesBackColor = Color.Yellow
       .ValuesColor = Color.Blue
   End With
   ' Assign the previous calculated values to the chart
    v.ApplyTo(Super2D3dGraph1)
    Super2D3dGraph1.RefreshChart()

   ' Populate the PIE chart
    With Super2D3dGraph2
       .AutoRefresh = False
       .LicenseeIdentifier = "STAND" ' This is the demo license
       .Title = "ValuesLocationStyle = SMART"
       .Style = STYLE2D3D.STYLE2D_PIE
      .ShowDataTable = False
       .ShowLegend = False
       .ValuesLocationStyle = STYLECAPTIONLOCATION.STYLECAPTIONLOCATION_INSIDE
       .ValuesBackColor = Color.YellowGreen
       .ValuesColor = Color.Brown
    End With
   ' Assign the previous calculated values to the chart
    v.ApplyTo(Super2D3dGraph2)
    Super2D3dGraph2.RefreshChart()

   End Sub

End Class


 

Result:


 

 

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Current version: 14

Super 2d/3d Graph Library is available as:
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