Hi,

This sample line chart shows two arrays, each with 10 000 random numbers, ranging from 0 to 100. The chart would not be very legible when all 10000 points are displayed on the screen, so it's set to scrollable:

//set the data
const int dataCount = 10000;
const int listCount = 2;

Random rand = new Random(10);
double[][]data = new double[listCount][];

for (int i = 0; i < listCount; i++)
{
     data[i] = new double[dataCount];

     for (int j = 0; j < dataCount; j++)
           data[i][j] = rand.Next(100);
}            
           

lineChart1.YData.Clear();
lineChart1.XData.Clear();
lineChart1.YData = data;

//appearance settings
lineChart1.ChartPens = new MindFusion.Drawing.PenCollection("n:0/#FF0CB00C/1/0/0//0/0/10/,n:0/#FFFF0000/0/0
/0//0/0/10/");
lineChart1.LineType = MindFusion.Charting.LineTypes.Line;            
this.lineChart1.ResizeType = MindFusion.Charting.WinForms.ResizeType.Scrollable;
           
//X-axis settings
this.lineChart1.XAxisSettings.AxisLength = 5000F;
this.lineChart1.XAxisSettings.LabelType = MindFusion.Charting.AxisLabelType.AutoScale;
         
//Y-axis settings
this.lineChart1.YAxisSettings.AxisDelta = 10;
this.lineChart1.YAxisSettings.MaxValue = 100;
this.lineChart1.YAxisSettings.MinValue = 0;

//update the chart with the new settings
lineChart1.UpdateChart();

ClearData() clears all numbers and labels that are set for any chart. In charts with axes these are XData, YData, Y2Data, XLabels, YLabels etc. In pie charts it will clear InnerLabels, OuterLabels, Data etc. LegendLabels are also emptied.

I hope that helps,
Stoyan