ChartDirector 6.0 (ASP/COM/VB Edition)

3D Scatter Axis Types




This example demonstrates different axis scale types for the 3D scatter charts. It also demonstrates using different symbol shapes.

Like an XYChart, in a ThreeDScatterChart, the axis scale can represent numbers, date/time or labels. In this example, the x-axis uses a date/time scale, the y-axis uses a label based scale, and the z-axis uses a numeric scale.

Source Code Listing

[Web Version (in ASP)] aspdemo\threedscatteraxis.asp
<%@ language="vbscript" %>
<%
Set cd = CreateObject("ChartDirector.API")


' The x coordinates for the 2 scatter groups
dataX = Array(DateSerial(2011, 9, 1), DateSerial(2011, 9, 2), DateSerial(2011, 9, 3), DateSerial( _
    2011, 9, 4), DateSerial(2011, 9, 5), DateSerial(2011, 9, 6), DateSerial(2011, 9, 7), _
    DateSerial(2011, 9, 8), DateSerial(2011, 9, 9), DateSerial(2011, 9, 10), DateSerial(2011, 9, _
    11))

' The y and z coordinates for the first scatter group
dataY0 = Array(0.4, 0.2, 0.5, 0.4, 0.7, 1.3, 1.1, 1.0, 0.6, 0.4, 0.5)
dataZ0 = Array(43, 38, 33, 23.4, 28, 36, 34, 47, 53, 45, 40)

' The y and z coordinates for the second scatter group
dataY1 = Array(1.4, 1.0, 1.8, 1.9, 1.5, 1.0, 0.6, 0.7, 1.2, 1.7, 1.5)
dataZ1 = Array(46, 41, 33, 37, 28, 29, 34, 37, 41, 52, 50)

' Instead of displaying numeric values, labels are used for the y-axis
labelsY = Array("Low", "Medium", "High")

' Create a ThreeDScatterChart object of size 760 x 520 pixels
Set c = cd.ThreeDScatterChart(760, 520)

' Add a title to the chart using 18 points Arial font
Call c.addTitle("3D Scatter Chart Axis Types", "arial.ttf", 18)

' Set the center of the plot region at (385, 270), and set width x depth x height to 480 x 240 x 240
' pixels
Call c.setPlotRegion(385, 270, 480, 240, 240)

' Set the elevation and rotation angles to 30 and -10 degrees
Call c.setViewAngle(30, -10)

' Add a legend box at (380, 40) with horizontal layout. Use 9pt Arial Bold font.
Set b = c.addLegend(380, 40, False, "arialbd.ttf", 9)
Call b.setAlignment(cd.TopCenter)
Call b.setRoundedCorners()

' Add a scatter group to the chart using 13 pixels red (ff0000) glass sphere symbols, with dotted
' drop lines
Set g0 = c.addScatterGroup(dataX, dataY0, dataZ0, "Alpha Series", cd.GlassSphere2Shape, 13, _
    &Hff0000)
Call g0.setDropLine(c.dashLineColor(cd.SameAsMainColor, cd.DotLine))

' Add a scatter group to the chart using 13 pixels blue (00cc00) cross symbols, with dotted drop
' lines
Set g1 = c.addScatterGroup(dataX, dataY1, dataZ1, "Beta Series", cd.Cross2Shape(), 13, &H00cc00)
Call g1.setDropLine(c.dashLineColor(cd.SameAsMainColor, cd.DotLine))

' Set x-axis tick density to 50 pixels. ChartDirector auto-scaling will use this as the guideline
' when putting ticks on the x-axis.
Call c.xAxis().setTickDensity(50)

' Set the y-axis labels
Call c.yAxis().setLabels(labelsY)

' Set label style to Arial bold for all axes
Call c.xAxis().setLabelStyle("arialbd.ttf")
Call c.yAxis().setLabelStyle("arialbd.ttf")
Call c.zAxis().setLabelStyle("arialbd.ttf")

' Set the x, y and z axis titles using deep blue (000088) 15 points Arial font
Call c.xAxis().setTitle("Date/Time Axis", "ariali.ttf", 15, &H000088)
Call c.yAxis().setTitle("Label<*br*>Based<*br*>Axis", "ariali.ttf", 15, &H000088)
Call c.zAxis().setTitle("Numeric Axis", "ariali.ttf", 15, &H000088)

' Output the chart
Response.ContentType = "image/png"
Response.BinaryWrite c.makeChart2(cd.PNG)
Response.End
%>

[Windows Version (in Visual Basic)] vbdemo\threedscatteraxis.cls
Public Sub createChart(viewer As Object, chartIndex As Integer)

    Dim cd As New ChartDirector.API


    ' The x coordinates for the 2 scatter groups
    Dim dataX()
    dataX = Array(DateSerial(2011, 9, 1), DateSerial(2011, 9, 2), DateSerial(2011, 9, 3), _
        DateSerial(2011, 9, 4), DateSerial(2011, 9, 5), DateSerial(2011, 9, 6), DateSerial(2011, _
        9, 7), DateSerial(2011, 9, 8), DateSerial(2011, 9, 9), DateSerial(2011, 9, 10), _
        DateSerial(2011, 9, 11))

    ' The y and z coordinates for the first scatter group
    Dim dataY0()
    dataY0 = Array(0.4, 0.2, 0.5, 0.4, 0.7, 1.3, 1.1, 1.0, 0.6, 0.4, 0.5)
    Dim dataZ0()
    dataZ0 = Array(43, 38, 33, 23.4, 28, 36, 34, 47, 53, 45, 40)

    ' The y and z coordinates for the second scatter group
    Dim dataY1()
    dataY1 = Array(1.4, 1.0, 1.8, 1.9, 1.5, 1.0, 0.6, 0.7, 1.2, 1.7, 1.5)
    Dim dataZ1()
    dataZ1 = Array(46, 41, 33, 37, 28, 29, 34, 37, 41, 52, 50)

    ' Instead of displaying numeric values, labels are used for the y-axis
    Dim labelsY()
    labelsY = Array("Low", "Medium", "High")

    ' Create a ThreeDScatterChart object of size 760 x 520 pixels
    Dim c As ThreeDScatterChart
    Set c = cd.ThreeDScatterChart(760, 520)

    ' Add a title to the chart using 18 points Arial font
    Call c.addTitle("3D Scatter Chart Axis Types", "arial.ttf", 18)

    ' Set the center of the plot region at (385, 270), and set width x depth x height to 480 x 240 x
    ' 240 pixels
    Call c.setPlotRegion(385, 270, 480, 240, 240)

    ' Set the elevation and rotation angles to 30 and -10 degrees
    Call c.setViewAngle(30, -10)

    ' Add a legend box at (380, 40) with horizontal layout. Use 9pt Arial Bold font.
    Dim b As LegendBox
    Set b = c.addLegend(380, 40, False, "arialbd.ttf", 9)
    Call b.setAlignment(cd.TopCenter)
    Call b.setRoundedCorners()

    ' Add a scatter group to the chart using 13 pixels red (ff0000) glass sphere symbols, with
    ' dotted drop lines
    Dim g0 As ThreeDScatterGroup
    Set g0 = c.addScatterGroup(dataX, dataY0, dataZ0, "Alpha Series", cd.GlassSphere2Shape, 13, _
        &Hff0000)
    Call g0.setDropLine(c.dashLineColor(cd.SameAsMainColor, cd.DotLine))

    ' Add a scatter group to the chart using 13 pixels blue (00cc00) cross symbols, with dotted drop
    ' lines
    Dim g1 As ThreeDScatterGroup
    Set g1 = c.addScatterGroup(dataX, dataY1, dataZ1, "Beta Series", cd.Cross2Shape(), 13, _
        &H00cc00)
    Call g1.setDropLine(c.dashLineColor(cd.SameAsMainColor, cd.DotLine))

    ' Set x-axis tick density to 50 pixels. ChartDirector auto-scaling will use this as the
    ' guideline when putting ticks on the x-axis.
    Call c.xAxis().setTickDensity(50)

    ' Set the y-axis labels
    Call c.yAxis().setLabels(labelsY)

    ' Set label style to Arial bold for all axes
    Call c.xAxis().setLabelStyle("arialbd.ttf")
    Call c.yAxis().setLabelStyle("arialbd.ttf")
    Call c.zAxis().setLabelStyle("arialbd.ttf")

    ' Set the x, y and z axis titles using deep blue (000088) 15 points Arial font
    Call c.xAxis().setTitle("Date/Time Axis", "ariali.ttf", 15, &H000088)
    Call c.yAxis().setTitle("Label<*br*>Based<*br*>Axis", "ariali.ttf", 15, &H000088)
    Call c.zAxis().setTitle("Numeric Axis", "ariali.ttf", 15, &H000088)

    ' Output the chart
    Set viewer.Picture = c.makePicture()

End Sub