Hi!
I need to plot data with different date range (from few days, to several years), and I want to use fixed date units for each row: first row always shows days, second - months, third – years.
For small ranges, all three rows should be visible, for big ranges (several years) – only third.
Different rows should not display the same date units.
How should I configure the scale to satisfy the above requirements?

Hi Irene,

You should configure the scale to use Custom step for each row - the following configuration replicates your first case (when the date range is small):

   NChart chart = nChartControl1.Charts[0];

   NRangeTimelineScaleConfigurator rangeScale = new NRangeTimelineScaleConfigurator();

   rangeScale.FirstRow.TickMode = TimelineScaleRowTickMode.Custom;
   rangeScale.FirstRow.CustomStep = new NDateTimeSpan(1, NDateTimeUnit.Day);

   rangeScale.SecondRow.TickMode = TimelineScaleRowTickMode.Custom;
   rangeScale.SecondRow.CustomStep = new NDateTimeSpan(1, NDateTimeUnit.Month);

   rangeScale.ThirdRow.TickMode = TimelineScaleRowTickMode.Custom;
   rangeScale.ThirdRow.CustomStep = new NDateTimeSpan(1, NDateTimeUnit.Year);

   NLineSeries line = new NLineSeries();
   chart.Series.Add(line);

   line.UseXValues = true;
   line.DataLabelStyle.Visible = false;

   DateTime current = DateTime.Now;
   TimeSpan span = new TimeSpan(0, 4, 0, 0);

   Random rand = new Random();

   for (int i = 0; i < 100; i++)
   {
    line.Values.Add(rand.Next(100));
    line.XValues.Add(current);

    current += span;
   }

For the second case you should simply set the visibility of the second and third rows to hidden:

rangeScale.FirstRow.Visible = false;
rangeScale.SecondRow.Visible = false;

Hope this helps - let us know if you meet any problems or have any questions.

Best Regards,
Nevron Support Team

Thank you for your response.
But I need to prevent labels from overlapping and word wrapping (labels must occupy a single row). How can I achieve this?
Also is it possible to automatically hide/show scale rows depending on scale range and zoom level?

Hi Irene,

It's not possible to remove overlapping labels in a range scale - this is because all labels in fact do not overlap as they are generated for non overlapping ranges. You'll probably need to create a custom scale in this case. Please send a request to support@nevron.com with complete requirements.

Best Regards,
Nevron Support Team