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John N
235
CategoryDateTimeXAxis with multiple line series
posted

Hi.  Can I get a VB example of using a CategoryDateTimeXAxis using the same x and y axis for multiple line series?  Does the value used by the DateTimeMemberPath need to be a date or a string format?  I will typically be using this on an hourly interval (if not more granular) and I need it to populate all the values on the x axis even if no value exist so I know that I need this instead of a CategoryXAxis.  I seem to be missing something in the binding I'm doing right now.  The y axis range seem right but nothing is graphing.  Thanks for you help in advance!

John

  • 235
    posted

    Here is my code:

                                                <ig:XamDataChart x:Name="fcMainChart" Height="300" Margin="2,50,2,2">

                                                    <ig:XamDataChart.Axes>

                                                        <ig:CategoryDateTimeXAxis

                                                                  x:Name="MainXAxis"

                                                        ItemsSource="{Binding}"

                                                        DateTimeMemberPath="Date1"

                                                        Label="{}{Date}">

                                                    <ig:CategoryDateTimeXAxis.LabelSettings >

                                                        <ig:AxisLabelSettings Location="OutsideBottom" Extent="25" />

                                                    </ig:CategoryDateTimeXAxis.LabelSettings>

                                                    </ig:CategoryDateTimeXAxis>

                                                    <ig:NumericYAxis x:Name="MainYAxis">

                                                        <ig:NumericYAxis.LabelSettings>

                                                            <ig:AxisLabelSettings Extent="25" />

                                                        </ig:NumericYAxis.LabelSettings>

                                                    </ig:NumericYAxis>

                                                    </ig:XamDataChart.Axes>

                                                    <ig:XamDataChart.Series>

                                                        <ig:LineSeries

                                                                  ItemsSource="{Binding}"

                                                                  MarkerType="None"

                                                                  XAxis="{Binding ElementName=MainXAxis}"

                                                                  YAxis="{Binding ElementName=MainYAxis}"/>

                                                    </ig:XamDataChart.Series>                                           

                                                </ig:XamDataChart>

    mMainWindow.fcMainChart.Series.Clear()

                For Each item As NostDataGraphItems.GraphItem In NostDataGraphItems.GraphItemsList

                    Dim data = From row In mTemplateData.Rows.OfType(Of DataRow)() Select New DateDataItem() With {.Date1 = CDate(row("DATEFIELD")), .Value1 = CDbl(row(item.MappingField))}

     

                    Dim lSeries As New LineSeries

                    mMainWindow.MainXAxis.DateTimeMemberPath = "Date1"

                    lSeries.XAxis = mMainWindow.MainXAxis

                    lSeries.YAxis = mMainWindow.MainYAxis

                    lSeries.Title = item.MappingField

                    lSeries.ItemsSource = data 'ds.Tables(0)

                    lSeries.ValueMemberPath = "Value1"

     

                    mMainWindow.fcMainChart.Series.Add(lSeries)

                Next

    Public Class DateDataItem

        Public Property Date1() As Date

            Get

                Return m_Date1

            End Get

            Set(value As Date)

                m_Date1 = value

            End Set

        End Property

        Private m_Date1 As Date

        Public Property Value1() As Double

            Get

                Return m_Value1

            End Get

            Set(value As Double)

                m_Value1 = value

            End Set

        End Property

        Private m_Value1 As Double

    End Class

    Thanks,

    John