ZoomScrollSettingsY setting in ChartArea makes the index on Y-axis displayed twice

[Sheetal]

I have created a Bar graph with two series. See below code. I am alos using the Zoom feature. I have set the ChartArea to 

ZoomScrollSettingsY and the ScrollMode to ScrollAndZoom. Under certain conditions when zooming in, the index on the Y-axis is repeated twice. Please see attached image. How can this be prevented?

private

 

 

void BindDataToChart()

{

RadChart1.DefaultView.ChartArea.DataSeries.Clear();

 

DataSeries seriesCategory1 = new DataSeries();

DataSeries seriesCategory2 = new DataSeries();

int startIndx = 0;

int endIndx = _ForecastViewModel.ForecastSummary[0].Count();

int i = 0;

int nIndx = 0;

string category = "";

for (nIndx = startIndx; nIndx < endIndx; nIndx++)

{

 

 

ForecastSummaryData data = (ForecastSummaryData)(_ForecastViewModel.ForecastSummary[0][nIndx]);

DataPoint category1dataPoint = new DataPoint();

DataPoint category2dataPoint = new DataPoint();

category = data.category;

 

string year = "";

 

if (category == "1") {

 

 

category1dataPoint.LegendLabel = 

"1";

 

 

 

category1dataPoint.XValue =

double.Parse(data.month);
if (data.schedule_amount > 0)
category1dataPoint.YValue = (double)(data.amount / 1000);
category1dataPoint.XCategory = Convert.ToString(data.monthname.TrimEnd().Substring(0, 3) + " " + year);

 

 

 

category1dataPoint.Tooltip =

String.Format("{0} contracts/{1:C}", data.count, (double)(data.amount));

 

 

 seriesCategory1.Add(category1dataPoint);

}

else {

 

 

category2dataPoint.LegendLabel =

"2";

 

 

 

category2dataPoint.XValue =

double.Parse(data.month);

 

 

if (data.schedule_amount > 0)
category2dataPoint.YValue = (double)(data.amount / 1000);

 

 

 

category2dataPoint.XCategory =

Convert.ToString(data.monthname.TrimEnd().Substring(0, 3) + " " + year);

 

 

 

category2dataPoint.Tooltip =

String.Format("{0} contracts/{1:C}", data.count, (double)(data.amount));

 

 

 

seriesCategory2.Add(category2dataPoint);

}

}

 

 

 

// Set the bar chart properties  

 

RadChart1.DefaultView.ChartArea.DataSeries.Clear();

RadChart1.DefaultView.ChartArea.LabelFormatBehavior =

LabelFormatBehavior.HumanReadable;

 

 

 

RadChart1.DefaultView.ChartArea.AxisY.DefaultLabelFormat = (

"$0K");
RadChart1.DefaultView.ChartArea.AxisX.LayoutMode = AxisLayoutMode.Between;
RadChart1.DefaultView.ChartArea.AxisX.Step = 2;

 

 

 

RadChart1.DefaultView.ChartArea.AxisX.LabelRotationAngle = 45;

 

 

RadChart1.DefaultView.ChartLegend.HorizontalAlignment =

HorizontalAlignment.Right;

 

 

RadChart1.DefaultView.ChartLegend.FontSize = 10;

seriesCategory1.LegendLabel =

"Scheduled";
seriesCategory1.Definition = new BarSeriesDefinition();

 

 

 

seriesCategory2.LegendLabel =

"Unscheduled";

 

 

 

seriesCategory2.Definition =

 

 

new BarSeriesDefinition();
byte[] fillColor1 = { 255, 106, 148, 200 };
byte[] strokeColor1 = { 255, 106, 148, 200 };

 

 

SetBarLayout((

BarSeriesDefinition)seriesCategory1.Definition,

 

 

fillColor1,

strokeColor1,

4d,

3);

 

byte[] fillColor2 = { 255, 145, 178, 80 };
byte[] strokeColor2 = { 255, 145, 178, 80 };
SetBarLayout((BarSeriesDefinition)seriesCategory2.Definition, fillColor2,

 

 

strokeColor2,

4d,

3);

 

if (endIndx == 0) {

 

 

 

RadChart1.ItemsSource = null;

 

 

 

RadChart1.DefaultView.ChartArea.IsNoDataMessageEnabled =

 

 

false;

 

}

 

else  

 

{

RadChart1.DefaultView.ChartArea.ZoomScrollSettingsY.ScrollMode =

ScrollMode.ScrollAndZoom; RadChart1.DefaultView.ChartArea.DataSeries.Add(seriesCategory1);

 

 

RadChart1.DefaultView.ChartArea.DataSeries.Add(seriesCategory2);

RadChart1.DefaultView.ChartArea.EnableAnimations =

false;

 

 

 

}

 

this.Cursor = Cursors.Arrow;

 

 

}

 

)

[Ves]

Hello Sheetal,

This is actually caused by the AxisY.DefaultLabelFormat setting. The format string you have used ("$0K") will not show any decimals. At the same time the automatic axis range algorithm has detected, that there is enough room to show the values like this: 0, 0.5, 1, 1.5, etc. So the first "$1K" is actually for 0.5, while the second is the correct one. You can set the DefaultLabelFormat like this: "$0.#K", so that the decimals are visible.

Alternatively, you can set the AxisY.AutoRange property to false and call the AddRange method supplying the desired MinValue, MaxValue and Step as parameters.

Best regards,
Ves
the Telerik team

[Sheetal]

Thank you. Changing the DefaultLabelFormat to "$0.0k" worked.

Sheetal.