Hi Rob,

Thanks, your provided solution is very great, but we have a little issue with this like

1. Our YAxis values are not fixed like XAxis, it is drawing according to data provided.
2. When YAxis data is not less then 0 (minus values)  then we have a major gap between XAxis ticks and Values with starting point of YAxis, it was reproduce able in sample application. 
3. Just set the NumericYAxis MinimumValue="0.00" then XAxis values and ticks have a major gap. Please fix that gap when YAxis minimum value started from "0.00"
4. Another issue, we have a same chart with fixed XAxis values 252 (Average no of days in a year) with custom label, like you did in your sample application. 
5. We have not fixed series for this, we generate series and vertical black lines (ValueOverlay) programmatically, when we show legend then these ValueOverlay also shown in legend how to get rid of it ? 
6. We display a label on trading days 1,8 and 13 (labeled "OE") for each month and a tick mark every day, like showing in attached snapshot.
7. When i was using same approach like you did in your sample application (set MinimumValue="0" and MaximumValue="252" of hidden NumericXAxis ) then our custom lables are displayed with each day tick mark but lables are over lapped with each other and not visible. You can see in red encircled.
8. It was visibles when we use Zoombar style with HorizontalZoomable="True".
9. But we need to display without Zoombar style like did in snapshot. 
10. We must showing same custom label with the mentioned names showing in snapshot, with legend inside the chart.
11. Can you create a sample application with the same look and feel like you did in your previous sample application ?
12. Its really very helpful for me. 

Hi elinder,

I'll update my sample to include your requirements.  Should be ready tomorrow.

Hi,

One more thing related to XamDataChart Axis labels formatting,

1. As i was already explained in my previous post our series are not fixed we create it programatically.
2. We have a user settings either he want to show Axis lables formating in Percentage (P2) or Numeric (N2).
3. We was defined XAxis and YAxis in xaml like this

4. <ig:CategoryXAxis x:Name="DaysOfYearXAxis" Interval="1" MajorStroke="Transparent" ItemsSource="{Binding DaysOfYear}">
   <ig:CategoryXAxis.Label>
   <DataTemplate>
   <StackPanel Orientation="Vertical">
   <Border Background="Gray" Width="1.5" Height="3"/>
   <TextBlock Text="{Binding Item.Label}" HorizontalAlignment="Center" TextAlignment="Center">
   <TextBlock.RenderTransform>
   <TransformGroup>
   <RotateTransform Angle="-90"/>
   <TranslateTransform Y="55" X="0"/>
   </TransformGroup>
   </TextBlock.RenderTransform>
   </TextBlock>
   </StackPanel>
   </DataTemplate>
   </ig:CategoryXAxis.Label>
   </ig:CategoryXAxis> 

5. <ig:NumericYAxis x:Name="DaysOfYearYAxis" MajorStroke="Gray" MajorStrokeThickness="1.5" MajorStrokeDashArray="1 2">
   <ig:NumericYAxis.Label>
   <DataTemplate>
   <StackPanel Orientation="Horizontal" Margin="0">
   <TextBlock Text="{Binding Item, StringFormat=N2}" Width="40" Foreground="Black" FontSize="11"></TextBlock>
   <Border Background="Gray" Width="3" Height="1.5"/>
   </StackPanel>
   </DataTemplate>
   </ig:NumericYAxis.Label>
   </ig:NumericYAxis>

6. We passed these XAxis and YAxis to the programatically generated series.

7. In this case we need a StringFormat property who bind where we was defined fixed StringFormat=N2. But this is not worked.

8. Can you include these settings in upcoming sample application?

Hi elinder,

From your screenshot I couldn't tell how your data points are split up so I just created a table with 252 random values.  The sample is attached.

- X Axis label gap with Y axis 0.0

    I was using the wrong approach for moving the X axis labels vertically.  I have fixed this so it will work no matter where 0 is.

- ValueOverlays are showing up in the legend

    Set the LegendItemVisibility property on the ValueOverlays to Collapsed.  If you do not want a series to be visible in the legend, set the LegendItemVisibility property

- Custom labels are overlapped and not visible.

    There are so many points in the chart that the x axis doesn't have enough room to display the labels.  I recommend rotating the x axis labels by 90 degrees and increasing the Interval so you cut down on the number of visible labels.  Inside the AxisLabelSettings there is a property called Angle which you can use to rotate the labels.  Set this to -90.

- Y Axis label format

    Instead of creating a custom TextBlock and setting the format there, you can set the format in the NumericYAxis.Label property.  When binding to this property, make sure your format looks like this: "{0:N2}%".  If you set the format in XAML you need to add an extra set of curly braces in front of it. ("{}{0:N2}%")  You can look at my sample for more details.

Hi Rob,

Thank you so much for your great support, I was modified the sample application

1. Now in sample application i was create the exact issue of XAxis labels over laping, i was used XML file for reading content.
2. This file contain 252 rows with custom labels format that exactly we need with all 252 days ticks, now all ticks are shown but our labels are not visible due to lack of space.
3. We must showing exact ticks with all defined custom labels look and feel like showing in previous attached snapshot. Because this is a real time snapshot of another application, and we need to follow that approach.
4. When we set interval then our ticks are not shown day wise (must show 252 ticks) and our custom labels are not shown completely.
5. We have user settings for formating of XAxis lables, i was used radio buttons for settings.
6. Two charts in sample application, one is programatically generated series, and another is xaml defined series with tooltip 
7. When user change the settings from radio button then charts must adjust XAxis and tooltip with those settings, i was create a property in viewmodel and bind it in YAxis StringFormat={Binding FormatString,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" and also in tooltip textblock.
8. For doing this xaml give me and error "A 'Binding' cannot be set on the 'StringFormat' property of type 'Binding'. A 'Binding' can only be set on a DependencyProperty of a DependencyObject."
9. We must showing ticks on YAxis like in XAxis that's why we use DataTemplate in YAxis label.
10. Can you fixed my highlighted points ?

Hi Rob,

Thank you so much, your provided solution solved my problems.

Hi elinder,

My previous sample already resolved the Y axis labels displaying underneath the ScrollBar.  I fixed it by placing the XamDataChart and ScrollBar inside a Grid with some RowDefinitions.

Fixing the ToolTip issue is a little tricky because the tooltip is actually just a Popup.  One issue with using a Popup is that it is removed from the Visual Tree of the main window so a RelativeSource binding to the window is not going to work.  I had to adjust the ToolTip content you have such that when the content is loaded, I set it's Tag property to the window's view model.  From here, binding to the Tag property is fairly straight forward.

For the Y axis value ranges, I modified the code so that it switches between OutsideBottom and InsideBottom depending on where the 0 value is.  If the 0 value is near the bottom or is the very bottom, the X axis labels are displayed with OutsideBottom.  When the 0 value moves high enough up the chart, it switches to InsideBottom.  Switching to InsideBottom removes the space below the chart as you required.  When the 0 value moves back down enough though, it switches back to OutsideBottom.

Hi Rob,

Thanks your slider functionality is very nice, but we don't used it in our production

1. I was used your suggested style in my xaml defined chart tooltip textblock (second chart (column series) of sample application), but unfortunately its not working. Can you look into it what's the issue with it ?
2. I was explained in my previous post our YAxis values are not always below than 0, its depend on data, If data exists below than 0 than we don't need to reserve space for XAxis, because our XAxis are inside the chart in that scenario. But when our values are started from 0 than we need appropriate space for XAxis labels rendering. 
3. I was highlighted issue when our YAxis is started from 0 than some labels are underneath of scroll bar. You can see that in previous post snapshot.
4.  Can you fixed above highlighted issues in sample application?

Hi elinder,

For XAML defined TextBlocks you can use the below code to set your DataTrigger: 

<TextBlock Name="MyXamlDefinedTextBlock">
    <TextBlock.Style>
        <Style TargetType="TextBlock">
            <Style.Triggers>
                <DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType=Window}, Path=DataContext.NumericFormatIsChecked}" Value="False">
                    <Setter Property="Text" Value="{Binding Item, StringFormat='{}{0:N2}%'}"/>
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </TextBlock.Style>
</TextBlock>

The issues I was talking about with using a wide range of minimum values was due to the approach I was thinking about taking which was to switch the X axis location between OutsideBottom and InsideBottom depending on where the 0 value was on the Y axis.  I decided to go with a different approach which made things a bit easier.  Although I'm not sure if you'd be ok with it.  Basically I keep the X axis inside the chart at all times and move it up based on where the 0 value is (as I did before).  This produced an interesting effect that I think should be ok.  You can see it in my sample.  There is a slider down at the bottom left of the window that you can use to shift the minimum value around.

Hi Rob,

Thanks,your provided solution is great.

1. Its solved my tooltip issue.
2. Its depend on our data, but we have a wide range of Y axis values between 0 and negative numbers. What's the issue you was faced with wide range values? Can you fix that issue in sample application, so we didn't face that issue in production.
3. How we can use DataTriger in xaml defined textblocks ? Like in sample application of Column series chart i was defined tooltip in xaml, we need to same formatting on all YAxis and tooltips of textblocks either they defined in xaml or generated through programatically.
4. Legend is goes inside the chart by using HorizontalAlignment and VerticalAlignment properties along with the Margin property, thanks.  
5. When our YAxis values started from 0.00 than our labels goes underneath in scrollbar you can see that in attached sanpshot with red encircled.
6. Can you fixed that issues in sample application? Its really very helpful for me.