Single value show problem

[SCT]

Dear Telerik Team,

we have unresolved problem by single value show in the RadChart in according to the next code snippet:

            radChart.ClearSkin();

            radChart.Skin = Skin;

            radChart.SeriesOrientation = ((RadChartEntity)Session[radChart.ID]).Orientation;

            radChart.AutoLayout = true;

           

            radChart.PlotArea.Appearance.Dimensions.Width = 500;

            radChart.ChartTitle.Appearance.Position.AlignedPosition = AlignedPositions.TopLeft;

            radChart.ChartTitle.Appearance.Position.Auto = false;

            radChart.PlotArea.XAxis.Appearance.ValueFormat = Telerik.Charting.Styles.ChartValueFormat.ShortDate;

            radChart.PlotArea.XAxis.Appearance.LabelAppearance.RotationAngle = 45;

            radChart.PlotArea.XAxis.Appearance.LabelAppearance.CompositionType = LabelItemsCompositionTypes.RowImageText;

            radChart.PlotArea.XAxis.Appearance.LabelAppearance.Position.AlignedPosition = AlignedPositions.Top;

            radChart.Appearance.FillStyle.FillType = FillType.Solid;

            radChart.Appearance.TextQuality = TextQuality.ClearTypeGridFit;

            radChart.Appearance.Border.Visible = false;

            radChart.Legend.Appearance.ItemTextAppearance.MaxLength = 20;

            radChart.Legend.Appearance.Position.AlignedPosition = AlignedPositions.TopRight;

            radChart.ChartTitle.TextBlock.Text = "";

            RadChart2.PlotArea.XAxis.IsZeroBased = false;

            RadChart2.PlotArea.XAxis.AutoScale = true;

We need the AutoScale property turn on, because of very large acceptable values scope on the X-Axis. Can you advice us what is required to do in order to show the values correctly (in case of single value), please?
Let us remark that optimal solution for us appears as centered value which is enclosed by two same time intervals (e.g. one year) , in case of single value.
In all the other cases, the AutoScale property initialized to true works fine.

Thank you in advance.

Kind regards,
SCT

[SCT]

Let us also remark about last two lines of code. Naturally, the identifier "RadChart2" has been mentioned as "radChart". In our code only the identifier "radChart" appears.

[Evgenia]

Hi Sct,

Could you please be more specific about your frustrations? A sample picture showing what is the scenario that causes inconvenience on your side will be very helpful for us.

All the best,
Evgenia
the Telerik team

[SCT]

Hi Evgenia,

Mentioned problem about visualization of single value (image #1) we've resolved by turning the autoscale mode to false together with manual boundary setting.

However, the another problem has been appeared: The X-axis doesn't correspond with real X-axis values (image #2).
We would be very grateful for any suggestions about such the problem.

Have a nice day.
SCT

[Evgenia]

Hello Sct,

I should admit that this is very strange behavior of our Tooltips. Could you please send us a sample runnable project where this reproduces so that we will be able to investigate it locally and get back to you with our findings/suggestions?

Regards,
Evgenia
the Telerik team

[SCT]

Hello Evgenia,

perhaps we have not clearly described the problem. Our problem occurs by X-axis values visualization, not by the ToolTip visualization. The correct timestamp value is located in the ToolTip (so '14.09.2011 23:50:48' is the correct and desired value).

Our RadChart is the component of quite huge web application. Thus, the segregation of the RadChart code will probably require a larger time amout for the preparation of separate web-app project. However, in case that mentioned standalone RadChart project is the only way, we'll try to prepare it.

Kind Regards,
SCT

[Evgenia]

Hi Sct,

After reviewing your pictures more carefully I should say that this is the expected behaviour of the Chart. Since you have set a RotationAngle and the LayoutMode of the YAxis is Between, you get the illusion that the Bubble with its tooltip shown is plotted after 15.9.2011. To prove that the Bubbles are plotted correctly I'm suggesting you to do the following:
1. Change the LayoutMode property of the XAxis to Inside like this:

RadChart1.PlotArea.XAxis.LayoutMode = ChartAxisLayoutMode.Inside;

2. Force the Axis Items Labels to display the date and time, not only the date by using this format:

RadChart1.PlotArea.XAxis.Appearance.ValueFormat = Telerik.Charting.Styles.ChartValueFormat.ShortDate;
RadChart1.PlotArea.XAxis.Appearance.CustomFormat = "MM/dd/yy HH:mm:ss";

Regards,
Evgenia
the Telerik team

[SCT]

Hi Evgenia,

we've tried your proposal as follows:

                radChart.ClearSkin();

                radChart.Skin = Skin;

 

                radChart.SeriesOrientation = ((RadChartEntity)Session[radChart.ID]).Orientation;

                radChart.AutoLayout = true;

 

                radChart.ChartTitle.Appearance.Position.AlignedPosition = AlignedPositions.TopLeft;

                radChart.ChartTitle.Appearance.Position.Auto = false;

                radChart.ChartTitle.TextBlock.Text = "Items count: 0";

 

                radChart.Appearance.FillStyle.FillType = FillType.Solid;

                radChart.Appearance.TextQuality = TextQuality.ClearTypeGridFit;

                radChart.Appearance.Border.Visible = false;

 

                radChart.PlotArea.EmptySeriesMessage.TextBlock.Text = "No data";

 

                radChart.PlotArea.Appearance.Dimensions.Paddings.Top = 0;

                radChart.PlotArea.Appearance.Dimensions.Paddings.Bottom = 0;

                radChart.PlotArea.Appearance.Dimensions.Paddings.Left = 0;

                radChart.PlotArea.Appearance.Dimensions.Paddings.Right = 0;

 

                radChart.PlotArea.XAxis.LayoutMode = ChartAxisLayoutMode.Inside;

                radChart.PlotArea.XAxis.IsZeroBased = false;

 

                radChart.PlotArea.XAxis.AutoScale = false;

 

                radChart.PlotArea.XAxis.Appearance.ValueFormat = Telerik.Charting.Styles.ChartValueFormat.ShortDate;

                radChart.PlotArea.XAxis.Appearance.CustomFormat = "MM/dd/yy HH:mm:ss";

 

                radChart.PlotArea.XAxis.Appearance.LabelAppearance.RotationAngle = 90;

 

                radChart.Legend.Appearance.ItemTextAppearance.MaxLength = 20;

 

Despite such the settings, the X-axis labels were not shown correctly. If we take into account date viewpoint, the visual result is OK. However, the time viewpoint of the visual result is quite perplexing. In case that time were shown as 00:00 it would be considered as acceptable for us.
Fortunately, the time is irrelevant for us, the date is necessary only. If there is some possibility to show the date only, it will be also acceptable for us.
At last, we attached the image with the result. We'll be very grateful for any advice about accomplishing the desired result.

Kind Regards,
SCT

[Evgenia]

Hi Sct,

I'm still surprised that there is such issue with your Tooltips and XAxis Items Labels. Please have in mind that to be able to have the exact Axis Item Label (together with the date and time) your mouse pointer should be on the exact center of the Bubble. Any tiny shift off the Center will cause a change in the Tooltip (in your case - in the Time).
 Also to show the Date only in your XAxis Labels use these code lines:

radChart.PlotArea.XAxis.Appearance.ValueFormat = Telerik.Charting.Styles.ChartValueFormat.ShortDate;

radChart.PlotArea.XAxis.Appearance.CustomFormat = "MM/dd/yy";

Regards,
Evgenia
the Telerik team