FlexChart: AxisX.ActualMax or Min strange values question

FlexChart: AxisX.ActualMax or Min strange values question

Posted by: a.sharov on 4 November 2021, 2:34 pm EST

• 

  a.sharov

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  Posted 4 November 2021, 2:34 pm EST

  Hi.

  I have code wich generate data with current date and bind it to chart

   
              flexChart3.DataSource = _data;
              
              var xCoord = new Series
              {
                      Name = "X",
                      Binding = "X",
                      BindingX = "Date",
                      ChartType = ChartType.LineSymbols,
              };
              flexChart3.Series.Add(xCoord);
  
  

  Date component is hourly values for some period:

  
          public List<XPosition> GetXVals()
          {
              var list = new List<XPosition>();
              var now =  DateTime.UtcNow;
              var after = now.AddMonths(3); //now.AddYears(1);
              var x = 1000;
          
              //2886336.6267
              var rand = new Random();
              while(now < after)
              {
  
  
                  list.Add(new XPosition
                  {
                          Date = now,
                          X = (temp % 2 == 0 ? 1 : -1) * temp / 10000.0,
                         
                  });
                  now = now.AddHours(1);
              }
  
              return list;
          }
  
  

  For AxisX of the chart I see value for ActualMax like 44596.746771481485. I figured out that this values i s a number of days since 1900 (1/1/1900). Well, I simply generated data from 1/1/1900 and values was like 1,2,3,4,.

  Is it correct? Is there any documentation for that?

  Thanks in advance.

• 

  kartik.sagar

  

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  Posted 11 November 2021, 12:47 am EST

  Hi Anton,

  I hope you got the solution from here:

  https://www.grapecity.com/forums/winforms-edition/range-selector-and-aggreat

  JFYI, DateTime values can’t be plotted to a chart. So, C1FlexChart uses the OLE representation of date. You can refer to the same from MSDN docs:

  https://docs.microsoft.com/en-us/dotnet/api/system.datetime.tooadate?view=netframework-4.5.2

  Best Regards,
  
  Kartik